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1
Li, Guang Jun, Sheng Yuan, and Xu Dong Xu. "The Development and Application of Object-Oriented Finite Element Analysis System for Sheet Metal Forming." Advanced Materials Research 756-759 (September 2013): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.33.
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Recently, the finite element (FE) numerical simulation technology has become an effective approach to solve problems in precise manufacturing of sheet metal parts in aircraft industries. Based on FE analysis software Pam-Stamp, Chengdu Aircraft Industrial Company developed a FE system for analysis of typical sheet metal forming. This system has been successfully applied in the development of new products, which shortens the preparation cycle of process and enhances the capability for rapidly researching and developing.
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Li, Guang Jun, Shun Yao Jin, Sheng Yuan, Zong Ke Shao, Xu Dong Xu, and Zhong Guo Huang. "The Application of Finite Element Analysis in Rubber Bladder Forming and Springback Compensation." Applied Mechanics and Materials 198-199 (September 2012): 183–88. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.183.
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In recent years, finite element analysis technology has been applied in Aircraft sheet metal manufacturing and digital manufacture field. It has become an effective way to solute Aircraft sheet metal precise manufacturing and received extensive attention. Chengdu Aircraft Company used finite element analysis in Rubber bladder forming for the development of aircraft. Parts rough lumber, forming way, tooling structure, forming pressure and springback compensation has been pre-determined. Finite element analysis of Rubber bladder forming shortened the process preparation cycle, and improved the part forming quality and the ability of the development and production.
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Othman, N. L. A., N. S. Hussain, D. Ibrahim, and Y. Yaacob. "Safety and risk evaluation implementation at sheet metal stamping company using HIRARC model." IOP Conference Series: Materials Science and Engineering 670 (December 2, 2019): 012070. http://dx.doi.org/10.1088/1757-899x/670/1/012070.
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Boguciński, Konrad, and Grzegorz Krawczyk. "Reduction of electricity costs of an industrial plant through the use of photovoltaic installations." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 12 (December 31, 2018): 316–22. http://dx.doi.org/10.24136/atest.2018.407.
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The article discusses the possibility of reducing the electricity costs of a selected department of an industrial plant by using a photovoltaic installation. This company is active in the production and assembly of railway and road automation devices, teletechnology, power engineering and sheet metal processing.
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Żaba, K., P. Kita, M. Nowosielski, M. Kwiatkowski, and M. Madej. "Influence Of Lubricants On Wear Resistance Of Aluminum Alloy Strips Series 2XXX." Archives of Metallurgy and Materials 60, no. 3 (September 1, 2015): 1833–38. http://dx.doi.org/10.1515/amm-2015-0313.
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Abstract The article presents a properly planned and designed tests of the abrasive wear resistance 2024 aluminum alloy strips under friction conditions involving various lubricants. Test were focused on the selection of the best lubricant for use in industrial environment, especially for sheet metal forming. Three lubricants of the Orlen Oil Company and one used in the sheet metal forming industry, were selected for tests. Tests without the use of lubricant were performed for a comparison. The tester T-05 was used for testing resistance to wear. As the counter samples were used tool steel - NC6 and steel for hot working - WCL, which are typical materials used for tools for pressing. The results are presented in the form of the force friction, abrasion depth, weight loss and coefficient of friction depending on the lubricant used and the type of counter samples. The results allowed for predicting set lubricant-material for tools which can be applied to sheet metal made of aluminum alloy 2024.
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Elaksmi, Lydia Resti, and Darti Djuharni. "Analisis Budget Kas Dalam Meningkatkan Likuiditas dan Profitabilitas Perusahaan." Akutansi Bisnis & Manajemen ( ABM ) 26, no. 02 (September 2, 2019): 122. http://dx.doi.org/10.35606/jabm.v26i02.455.
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The purpose of the study to find out how the cash budget implementation at metal company UD Lancar Jaya, Tulungagung in increasing liquidity and profitability. The research method used is case study research. The researcher conducts financial ratio analysis consisting of analysis of liquidity and profitability through financial statements, namely the income statement and balance sheet for 2015-2017 and prepares financial report projections in 2018. The analysis shows that the company faces the problem that is using inefficient funds
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Kong, Siew Mui, Rajendran Muthuveloo, Josephine Ie Lyn Chan, Hossein Nezakati, and Jignyasu Prafulla Joshi. "Retaining human capital: a danger zone for METAL STAR." Emerald Emerging Markets Case Studies 11, no. 1 (April 27, 2021): 1–33. http://dx.doi.org/10.1108/eemcs-09-2020-0330.
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Learning outcomes This case is to familiarise students with the peculiarities of managing people by focussing on human capital development (HCD). Through the case, students are exposed to the critical recruitment and retention issues faced by METAL STAR Limited Company (METAL STAR), which have a detrimental impact on their business operations. Through the novel use of the transformer-transactor-performer (TTP) profiling tool, students are able to recognise the importance of matching the right candidate to the right job as a solution for recruitment and retention issues. At the end of the case analysis and discussion, students would have a clear idea of the TTP Profiling tool and how to identify core elements needed for an effective and holistic recruitment-retention-separation strategy for a company. The knowledge gained is most valuable for the students as it can be applied to other companies having similar HCD issues. Case overview/synopsis Carina Yew is the General Manager of METAL STAR, a sheet metal fabrication company in Penang, Malaysia. After more than 28 years of operations, METAL STAR has been adopting the same human resources (HR) processes and has failed to keep up with the current HR trends. Yew has to decide the best way to lead her company in transforming the HCD strategy to enable smooth and profitable business growth. Complexity academic level The case is relevant for undergraduate, postgraduate or even executive students taking courses pertaining to HCD or human resource management. Subject code CSS 6: Human resource management. Supplementary materials Teaching notes are available for educators only.
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Li, Shan, Yu Qi Wang, and Liang Xu. "The Numerical Simulation and Parameter Optimization Analysis of Straightening Machine Straightening Process Based on ANSYS/LS-DYNA." Advanced Materials Research 630 (December 2012): 133–35. http://dx.doi.org/10.4028/www.scientific.net/amr.630.133.
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Copper is important to the national economy as a kind of raw material, the Copper metal with higher purity is got by electrolysis in generally. In order to ensure the uniform space between cathode and anode when they are in electro-groove, to attain the better quality of cathode copper and raising production efficiency, verticality of the cathode and anode must be well. So it is very necessary to straighten the Copper starting sheet to acquire the better verticality, this paper adopt the roller type straightening machine to straighten the Copper starting sheet by analysis and comparison according to the material and structure characteristic of Copper starting sheet . In order to test the straightening ,this paper will use the ANSYS/LS-DYNA to simulate straightening machine to meet the need of company.
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Kittner, Kai, and Bernd Stimper. "Robustness - Practice Report: Make Forming Processes more Stable." Materials Science Forum 918 (March 2018): 95–102. http://dx.doi.org/10.4028/www.scientific.net/msf.918.95.
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In the last years, the development of sheet metal forming technologies shows many different tendencies such as materials or geometries. In the same duration the process planning for stamping processes keep still in the same way, although numerical algorithm and hardware improved continuously. That means, as components, processes and materials got more complex, the planning process still stays in the same technical evolution stage as years before. At present it is mostly a deterministic kind of planning. And in this way, potentials and possibilities still lie down. In the actual discussion around industry 4.0 new potentials around this topic seems to show new ways, but a lot of data and technologies are already available to improve production and forming processes. The task is to use this data. The key to improve the processes based on this data is the stochastic simulation, especially in the sheet metal forming industry [1,2]. The eberspaecher company as customer for sheet metal parts has an immense interest in high quality parts. High quality parts are an important step to reduce cost in the own following manufacturing. This paper deals with actions to integrate stochastic considerations into the planning process at eberspaecher. And its content should excite the discussion around robustness processes, stochastic simulation and in this way industry 4.0 as one base for future manufacturing.
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Słania, J., R. Krawczyk, and D. Masłoń. "Technology of Welding Joints Mixed with Duplex Steel." Archives of Metallurgy and Materials 61, no. 1 (March 1, 2016): 159–68. http://dx.doi.org/10.1515/amm-2016-0029.
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Results of the examinations of sample plates of mixed joints with the duplex steel were discussed. Examinations were taken on the sample plates of mixed joints of sheet plates type P355NL1 and X2CrNiMoN22-5-3 welded by the flux-cored wire DW-329A by the Kobelco company of the following category T 22 9 3 NL RC/M3 in the gas shroud M21 (Ar+18%CO2) (plate no.1), and nickel covered electrodes E Ni 6082 by the Böhler company (plate no. 2). Results of the side bend test of welded joint, transverse tensile test, stretching of the weld metal, impact strength, micro and macroscopic metallographic examinations, and measurements of the delta ferrite content were presented.
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Burawat, Piyachat. "PRODUCTIVITY IMPROVEMENT OF HIGHWAY ENGINEERING INDUSTRY BY IMPLEMENTATION OF LEAN SIX SIGMA, TPM, ECRS, AND 5S: A CASE STUDY OF AAA CO., LTD." Humanities & Social Sciences Reviews 7, no. 5 (September 28, 2019): 83–92. http://dx.doi.org/10.18510/hssr.2019.7511.
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Purpose: The objective of this study is to improve productivity by means of lean six sigma, TPM, ECRS, and 5S in the highway engineering industry. The study was conducted from November 2017 to April 2018 from a case study of AAA Co., Ltd. The data were collected from the managers and supervisors and the problems were analyzed by brainstorming, cause and effect diagram, and Pareto chart. Referring to the results, it was found that production problems occurred from the asphalt process. The majority problem was wet rock and rock sticking to the conveyor belt.
Methodology: Considering the shed, the shed of stone storage could be changed from construction from net or fabric sieve to construction from the metal sheet. Regarding the conveyor belt, the conveyor belt could be changed from conveyor belt without roof to constructed conveyor roof from metal sheet. The messy construction area was improved by 5S. Essential materials and equipment were sorted in construction area, while the other remained materials and equipment were removed to another area.
Main Findings: The findings demonstrated that Lean Six Sigma, ECRS, TPM, and 5S can be seen as an effective technique that can reduce waste and improve business performance which can be applied in any industry as well as any size of the company. It very well may be viewed as the advancement of the improvement strategies among the representatives and as a preparation technique for the workers. The discoveries illustrated, in any case, that there are snags in the viable execution of the improved methods for any improvement reason.
Implications/Applications: The findings confirmed that it can be applied in both manufacturing and services business. Due to the lower resource investment, it can be implemented in any company like small, medium, and large company.
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Hussein, H. M. A., J. Abu Qudeiri, U. Umer, and R. K. Abdel-Magied. "If-Then Rules for Selection the Die-Set for Sheet Metal Punching and Blanking Dies." Advanced Materials Research 980 (June 2014): 208–13. http://dx.doi.org/10.4028/www.scientific.net/amr.980.208.
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Die-set is an essential tool accessory in sheet metal punching and blanking. The selection of the die-set represents an important activity in the die design operation. Time and money consumed in this operation could be saved by using an automated selection system for die-set components. This paper discusses an intelligent die-set selection system using the AutoCAD platform. The developed system is able to work as either standalone or connected with any die design CAD system by using the well-known AutoCAD programming tools. The proposed system is built using IF-THEN rules approach. The system code is developed using AutoCAD with Visual Basic. A data-base of Nasr Automotive Company (NASCO) for die-set was considered, from which suitable size of die-set was selected automatically. The proposed system could reduce the consumed time in the tool room department from hours to minutes and could reduce effort and cost as well.
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Huang, Qiu Bo, Jun Rui Song, and Qing Bo Yang. "Design of Virtual Prototype for Cold Roll Forming Machine of Side Panel of Engineering Vehicles and Numerical Simulation of the Forming Process." Advanced Materials Research 753-755 (August 2013): 159–62. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.159.
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In this paper, based on the engineering vehicle’s side plate cold roll forming machine developed by a company, we use 3D solid modeling software Solid Works to complete the establishment of a 3D model. On the basis of explicit dynamics elastoplastic finite element method basic theory, we make numerical simulation analysis of the metal plate’s forming process by using ANSYS/LS-DYNA module. According to the simulation results, we make repeated adjustment and optimization on its pass system and parameters. Through the numerical simulation of the forming process, we conclude the stress-strain distribution of the sheet metal. For similar products, the result has a certain reference value to the research of cold roll forming process and the design of cold roll forming equipments.
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Özgen, Ceyda. "The collection of a toy: Production history and collection value of the Matchbox regarding the consumer behaviours." Journal of European Popular Culture 12, no. 1 (March 1, 2021): 45–63. http://dx.doi.org/10.1386/jepc_00027_1.
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Metal casting technology reached at a very advanced point after the Second World War. When the war was over, many companies producing metal castings suffered a huge market loss and tried to create new markets and develop new products. Some companies, inspired by the rapid development of automobile production, started to produce toy model cars with the casting technique, which were generally made with sheet metal bending until then, using the moulding techniques they had advanced. In this study, the history of Lesney company, established after the Second World War, and the development of Matchbox’s product range will be discussed in the context of collecting and a collection object. Matchbox collections are the most common model car collections in the world. The status of the designed objects as collectible objects was investigated together with the history and development process of Matchbox cars production and collecting behaviour of consumer.
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Juniarti, Juniarti, and Salamatun Asakdiyah. "ANALISA KINERJA KEUANGAN PADA PERUSAHAAN METAL AND ALLIED PRODUCT YANG TERDAFTAR DI BURSA EFEK INDONESIA." Jurnal Fokus Manajemen Bisnis 4, no. 2 (September 30, 2014): 82. http://dx.doi.org/10.12928/fokus.v4i2.1353.
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The financial performance of companies known by analysing financial statements, the analysis conducted is the Current Ratio, Liquidity Ratio, Ratio of Current Assets Cash and Cash Ratio of Current Debt, Solvency Ratio of Total Debt for Equity and Debt Ratio of Assets, Ratio of Total Activity Assets Turnonver Ratio and Inventory Turnover Ratio, Profitability Ratio of Profit Margin Ratio and Return On Investment Ratio. This study used secondary data contained in the Indonesia Stock Exchange in the form of financial statement balance sheet and profit and loss of all three Metal and Allied Products Company for five years from 2005-2009. By using ratios – financial ratios above then the results is to provide ratings (ranking) on each – each company include: PT. Betonjaya Manunggal Tbk., rank (rank), the first based on the financial performance ratios liquidity ratios, solvency, activity, and profitability. PT. Lion Metal Works Tbk., rank (rank), second because one ratio is the ratio of the activity on the total asset turnover underperforming because fewer than than 1 times the velocity. PT, Jaya Pari Steel Tbk., rank (rank) third because in addition to the activity ratio, second ratio is the ratio of fluctuating liquidity and profitability ratios is not good.
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Ostrovskyi, Anatolii. "MODERNIZATION OF THE TEMPLATE FOR MARKING OUT SHEET METAL PRODUCTS OF THE MOST USED SPATIAL FORMS." ENGINEERING, ENERGY, TRANSPORT AIC, no. 1(112) (March 23, 2021): 53–59. http://dx.doi.org/10.37128/2520-6168-2021-1-7.
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The use of innovative solutions significantly improves the technological process of manufacturing products, promotes the economic growth of enterprises. Therefore, first, we need to pay attention to the latest technologies as a guarantee of future growth in the welfare of the population. However, it is worth noting that not every company can afford to purchase and sell high-tech equipment due to financial problems. As a consequence of the above, it is necessary to activate the internal potential of enterprises. Simple technical solutions, very often, can serve as a replacement for equipment from foreign manufacturers without significant reorganization of production and large-scale investments. Due to, the fact that sheet metal is widely used in production, namely in the manufacture of various parts, it is advisable to improve the technological process of processing thin metal sheets. One of the initial operations of machining sheet metal is marking with a template. The traditional method of using a template for the flat marking of metal sheets involves mirroring the pattern of the marking and the working part of the contour of the template, the movement of the plotter to mark described the shape of the template during contact pattern-painter. As a result, of the markup operation, the number of segments of the broken line that formed the markup pattern was equal to the number of movements required to complete the operation. The disadvantage of the traditional technique is both temporal and spatial aspects of the marking process, namely the change of direction of the drawing, which significantly slows down the marking process. As a result, of numerous experimental studies, it was found that this process can be improved through innovative techniques of flat marking. In order to maximize the potential of sheet metal machining at the initial stages of the technological process, according to the test results, the design of the marking template was finalized.
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Grbic, Nenad, Anas Bouguecha, Milan Vucetic, A. Neumann, Tomasz Osiecki, and Bernd Arno Behrens. "Validation of the FEA of a Sheet Metal Forming Process of Composite Material and Steel Foil in Sandwich Design." Applied Mechanics and Materials 794 (October 2015): 75–80. http://dx.doi.org/10.4028/www.scientific.net/amm.794.75.
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A multi-material concept in sandwich design using two steel foils and continuous fiber-reinforced thermoplastics represents a promising structural approach to the production of hybrid parts. This contribution deals with the experimental and numerical analysis of a conventional sheet metal forming process using a composite material based on Polyamide 6 (PA6) with unidirectional endless glass fiber reinforcement and HC220Y+ZE steel foil. A unidirectional composite plate is positioned between two steel foils in sandwich design and formed into the hybrid part under appropriate temperature conditions. Afterwards, the forming process is analysed numerically with the software LS-DYNA and for verification of the FEA the geometry of the hybrid part is measured optically with ATOS system of the company GOM.
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Mochammad Tutuk Safirin, Mega Islami, Rizqi Sari, Sinta Dewi, and Enny Aryanny. "Mental Workload Analysis of Workers Using the Swedish Occupational Fatigue Index (SOFI) Method at A Job Shop, Sheet Metal, And Pipe Metal Manufacturing Company in Surabaya." Technium: Romanian Journal of Applied Sciences and Technology 16 (October 29, 2023): 411–16. http://dx.doi.org/10.47577/technium.v16i.10020.
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This study aims to determine the mental workload of 15 respondents at PT. X in the morning shift and night shift, as measured by the Swedish Occupational Fatigue Index (SOFI) method. The highest value of the morning shift fatigue index dimension is found in the lack of energy factor with a value of 3.97, while in the night shift, the highest value is in the sleepiness factor with a value of 3.13. The fatigue index of workers is considered to be still high and work system improvements are needed.
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Dharmayanti, Indrani, and Ajeng Rahayu. "ANALISIS PENGENDALIAN KUALITAS TERJADINYA CACAT PADA PROSES PRODUKSI ADJUSTER R KWB (Studi Kasus di PT. Dina Karya Pratama. (Cicadas-Bogor)." Jurnal Manajemen Industri dan Logistik 2, no. 1 (December 4, 2018): 62–71. http://dx.doi.org/10.30988/jmil.v2i1.26.
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This study aims to find out the production process of Adjuster R KWB (a part of automotive sparepart), the defect analysis and causes in PT. Dina Karya Pratama. It is a manufacturing company engaged in metal industry, especially automotive,. Quality control analysis is done using statistical called seven tools consisting of check sheet, p control chart, pareto diagram, and cause and effect diagram to answer those problems. The results of analysis show that the production process is controlled by the average proportion of defects (0.0071283). The level of disability is dominated by screw jam (50%) and circle not symmetry (35%). The main factors causing the defect are the engine factor that has not been hot, the method factor and the inaccuracy of labor.
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Formisano, Antonio, F. Capece Minutolo, Antonio Caraviello, Luigi Carrino, Massimo Durante, and Antonio Langella. "Validation of a FEM Model for the Simulation of the Cold Roll Forming Process." Key Engineering Materials 651-653 (July 2015): 219–24. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.219.
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Cold roll forming is a process for plastic deformation, which allows realizing profiles, with a defined section and established length, from the plastic deformation of a metal sheet. The sheet is induced to cross several stands of rolls, arranged along the same axis of advancing. The rolls induce plastic deformation in the sheet and then lead it to the desired geometric configuration. In order to control the geometric parameters of the plate during the profiling, it was created a FEM model to simulate the final stage of the technological process, developed by an industrial production line of a company located in Naples (Italy), that sells tubes with several cross sections. In this phase, the semi-finished product, having a circular cross section, is forced to cross through four stands of rolls. In this way, it changes the geometric condition of the cross section from circular to square. The model was carried out using a non-linear calculation code, which allows analyzing the parameters of interest in the different process steps. The results, obtained numerically, were compared with the experimental ones through the measurement of five specimens, obtained directly from technological process. The values of percentage deviation, regarding the external dimension and the thickness, for each step of advancement, do not exceed the 3% of error. Then, the analysis results denote the capability to simulate the cold roll forming process using finite element method.
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Bley, H., C. Zenner, and M. Bossmann. "Intelligent Manufacturing by Enhanced Product Models." Advanced Materials Research 6-8 (May 2005): 295–302. http://dx.doi.org/10.4028/www.scientific.net/amr.6-8.295.
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As the quality of manufactured products as well as the quality of the used manufacturing processes has become more and more important for a company in order to stay competitive in the last decades, an integrated quality management leading towards intelligent manufacturing represents a key factor today. Therefore, new methods are required for considering quality information in all phases of the product life cycle. Feature technology and especially the use of so-called measurement and quality features represent an approach towards integrated quality management and the achievement of process-oriented and global quality control loops. Furthermore, feature technology in general also represents a high potential just within the area of sheet metal forming where it can be used to provide additional information for designing manufacturing processes and constructing tools and devices in manufacturing systems.
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Prasetyo, Dwi, and Eidelweis Dewi Jannati. "PEMBUATAN PART RING RAINFORCEMENT MENGGUNAKAN MESIN PRESS STAMPING CHIN FONG 110." SEMINAR TEKNOLOGI MAJALENGKA (STIMA) 7 (November 8, 2023): 293–97. http://dx.doi.org/10.31949/stima.v7i0.903.
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PT. Persada Selaras Indonesia is a company engaged in sheet metal stamping and dies in Majalengka Regency. One of the products produced at PT. Persada Selaras Indonesia is Part Ring Rainforcement. In the process of making Part Ring Rainforcement using SPCC-SD material using a CHIN FONG Press Stamping Machine with a capacity of 110 Tons through the process of selecting Dies for the Blanking, Bending, Pierching, Marking, Embosh processes.The researcher used the observation method to find out the Part Ring Rainforcement process, Part Ring Rainforcement, one of the components contained in the vehicle tank which is produced at PT. Persada Selaras Indonesia. The Rainforcement Ring Part Making Process is divided into several parts, namely the Planing process, Blanking Process, Bending + Pierching Process, Marking + Embosh Process, and Quality Control Process.
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Nagy, János B. "The past, the present and the future of nanotechnologies." Acta Materialia Transylvanica 4, no. 1 (April 1, 2021): 1–8. http://dx.doi.org/10.33924/amt-2021-01-01.
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Abstract Artists from the time of Mesopotamia or Egypt and in the Middle Ages astonished us with various coloured Stained-glass windows, prepared with the help of metal nanoparticles. The paper will deal with zeolites, nanoparticles and carbon nanotubes. The latter will be developed more extensively, because we have founded the Nanocyl company, selling carbon nanotubes and it has become the best European company. One carbon nanotube is 100,000 times thinner than a human hair, it is very light – twice as light as aluminium –, its mechanical resistance is much higher than that of steel and it conducts electricity better than metal conductors. The use of carbon nanotubes is very important in nanotechnology. For example, with the help of coiled carbon nanotubes, the weight of a single nanoparticle can be measured, it is equal to one femtogram (10−15 gram). Carbon nanotubes are used in car spray painting to cancel the build-up of static electricity. With the help of carbon nanotubes, it is possible to decrease the velocity of flame propagation, when they are included in composite materials. Carbon nanotubes are also very good as sensors for toxic gases. Their uses will take up the most part of this paper. The future of nanotechnology will be illustrated by nanomachines, by the lift between the Earth and the Moon, and by graphene (one single sheet of graphite). The use of carbon nanotubes will be evoked in waste water cleaning, in the production of drinking water from seawater.
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Mammadov, Arif, Nizami Ismayilov, Elxan Mammadov, and Muxtar Huseynov. "Study of the Possibility of Production of Continuously Cast Billets from Shipbuilding Steels." Key Engineering Materials 979 (April 5, 2024): 73–80. http://dx.doi.org/10.4028/p-8ys0gg.
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The importance of creating specialized production sites to meet the needs of shipbuilding and ship repair enterprises of Azerbaijan in metal billets is substantiated. Technical, technological and organizational measures for the specialization of the existing production sites of Baku Steel Company LLC for the production of shipbuilding steels are recommended. The ways of mastering the production of continuously cast billets and sheet-rolling technologies from shipbuilding steels are shown.For this purpose, the need to install a continuous casting machine (CCM) in Baku Steel Company LLC is substantiated and the advantages of manufacturing steel billets on this machine are shown. It is determined that in order to reduce the overall dimensions of the caster, its radius of curvature should be 10.2 m. It is shown that the rational value of the radius of curvature reduces the probability of defects on the blanks during crystallization and makes it possible to obtain blanks of various profiles.It is shown that the combined use of EMF and hydrocarbons can reduce the defects of blanks by 2-3 times, increase the zones of equiaxial crystals by 50-80%, significantly reduce axial porosity and liquation, increase the casting speed of liquid steel by 20-30% and reduce the metal consumption of equipment by 2 times. The introduction of technologies for electromagnetic mixing and vacuuming of liquid steel makes it possible to expand the production of alloy steels for the needs of shipbuilding and ship repair enterprises.
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Senthilmurugan, P. R., C. Jegadheesan, and S. R. Devadasan. "Quality improvement in the production of 'U' type clamp in sheet metal manufacturing company: a case study on the application of TFMEA." International Journal of Productivity and Quality Management 17, no. 3 (2016): 394. http://dx.doi.org/10.1504/ijpqm.2016.074864.
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Belguebli, Amina, Ibrahim Zidane, Adel Hadj Amar, and Abdessoufi Benhamou. "Numerical investigation of an extra-deep drawing process with industrial parameters: formability analysis and process optimization." Frattura ed Integrità Strutturale 18, no. 68 (February 15, 2024): 45–62. http://dx.doi.org/10.3221/igf-esis.68.03.
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Extra-deep drawing is one of the most important sheet metal forming processes. The appearance of rupture and wrinkling are the most commonly encountered problems in this process. These defects are also very common at a local company, particularly in the manufacturing of wheelbarrow trays. As a consequence, substantial time and costs are incurred in industrial production. To thoroughly analyze and address these defects, the extra-deep drawing operation of the wheelbarrow tray was modeled by the FE method using Abaqus software. A defect-free manufactured wheelbarrow tray was used to validate the accuracy of the numerical approach. Precise measurements of its dimensions were taken through the reverse engineering process using a 3D scanner. Furthermore, other measurements were made with an ultrasonic thickness gauge to have more precise measurements of the product’s thickness. Comparing experimental and numerical results showed good agreement. The outcomes of the numerical analysis indicate that the final shape of the wheelbarrow tray does not contain rupture or wrinkling defects, accurately corresponding to the real cases manufactured at the company. Numerical modeling and optimization of the extra-deep drawing process performed in this study could potentially reduce production losses and improve the overall efficiency of industrial manufacturing.
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Nur Sahroni and Rizki Achmad Darajatun. "Efektivitas Proses Produksi Melalui Pengendalian Kualitas pada Part End Plate dengan Metode Lean Six Sigma di PT. GCE." Industrika : Jurnal Ilmiah Teknik Industri 8, no. 2 (April 22, 2024): 343–51. http://dx.doi.org/10.37090/indstrk.v8i2.1259.
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Competition in the business world is getting tougher, encouraging companies to improve and develop the quality of their production, the quality of the goods or services produced will affect the competition of a company. Making the production process more effective is something that companies must do to increase production results and can affect company costs. PT.GCE is a manufacturing company operating in the Sheet Metal sector and the production process takes place on a job order basis. In the production process, various deviations and obstacles often occur which result in products experiencing non-conformities, both in product form and processing time. The Six Sigma method is a business strategy that is considered capable of improving and maintaining a company's operational excellence. The results of calculations carried out using the DMAIC method in the Part End Plate production process obtained data on 0.048 defects in the non-conforming product category and 0.084 defects in untidy products, so it can be concluded that defects in Part End Plate products are below 3.4 defects out of a million opportunities. From the calculation results, it was found that the factors causing defects in the Part End Plate production process could be caused by several factors experienced, including machine and labor factors. It is necessary to propose improvements that can be made in an effort to reduce the level of product defects in Part End Plate products so that defects no longer occur in the product. Keywords: DMAIC, Manufacture, Quality Control, Six Sigma.
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Masifora, Aji, and Asep Erik Nugraha. "Analisis Postur Tubuh Departement Welding Dengan Metode RULA Studi Kasus Di PT SMT." Jurnal Teknik Industri Terintegrasi 6, no. 1 (April 27, 2023): 65–70. http://dx.doi.org/10.31004/jutin.v6i1.14258.
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PT.SMT is a company engaged in processing and assembling products from sheet metal materials, in the production process some processes are still conventional. According to the initial assessment, welding and grinding stations are two workstations where operators often experience injuries. The study's objective was to assess the operator's working position in order to gauge the severity of a work injury. The technique is called RULA (Rapid Upper Limb Assessment). Four operators are at a high risk, as shown by the NBM (Nordic Body Map) computations. These operators work in the welding process, which receives scores of 73 and 69, and the grinding process, which receives scores of 60 and 64.. The score of 6 is obtained from the RULA score for the operator's welding process in the welding department, indicatingng that more research needs to be done and change needs to happen quickly. This shows that to reduce operator work accidents, the production process must be improved.
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Ying, Nyeoh Cheng, and Mohzani Bin Mokhtar. "Heuristic Model for Dynamic Single Machine Group Scheduling in Laser Cutting Job Shop to Minimize the Makespan." Advanced Materials Research 383-390 (November 2011): 6236–41. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6236.
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In today’s highly competitive market, laser cutting which has a characteristic of “make to order” and high product variety is under pressure to reduce costs, to increase productivity and to respond to the rapidly changing demands from customers. To maintain the competitive advantage, companies need to have a real-time dynamic scheduling system, which can handle large combinations of jobs, allowing sequencing of jobs to achieve multi-objective goals. Motivated by a real-life scheduling problem in a sheet metal processing company in Malaysia, this research addressed single machine scheduling problem with sequence-dependent setup times and group technology assumption to minimize makespan and with the secondary objective of minimizing setup times. The focus of this paper is on developing a simple heuristic algorithm based dynamic scheduling system. This algorithm has been coded in vb.net and is integrated with a database system. The scheduling system developed is verified and validated by comparing to the actual production run. Results show that the algorithm model can find good solutions within short computational time.
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Brown, Alan S. "Under the Hood at GM." Mechanical Engineering 133, no. 10 (October 1, 2011): 28–33. http://dx.doi.org/10.1115/1.2011-oct-1.
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This article reviews various changes and developments that the General Motors’ (GM) management has brought after going bankrupt. According to a study, GM began to make plants more standardized and flexible years before Ford. Yet, Ford progressed faster because its centralized management was better able to make and implement decisions. GM needs to improve the speed of its decision-making. It plans to invest billions in United States and European manufacturing. It continues to expand in China, where it makes more vehicles than in the United States. GM’s plants focused on differentiating those things that gave its brands their character: sheet metal, power train, and interiors. Most importantly, GM began assembling every vehicle in every plant in the same sequence. The company has placed a large bet on the Volt, a plug-in electric car with an internal combustion engine. The combination means that the car is not limited to its 40-mile battery range. GM is making profits and succeeding now these days because it is building vehicles that customers want to buy, not vehicles they have to buy.
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Anwar, Isrizal, and Fuad Achmadi. "Strategi Penjadwalan Set Up Mould Dies Mesin Press dengan Menggunakan Metode Overall Equipment Effectiveness (OEE) dan Reliability Centered Maintenance (RCM)." Idarotuna : Journal of Administrative Science 4, no. 2 (October 15, 2023): 115–36. http://dx.doi.org/10.54471/idarotuna.v4i2.65.
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PT. ABC is a paint manufacturing company that has been established since 1978. The products it produces are various types of paint, both water based and solvent based. Inside PT. ABC has a Metal Production Department whose job is to make paint packaging cans, because PT. ABC makes cans for packaging its paint products independently. One of the work stations that play an important role in the continuity of the production process in the Metal Production Department is the component manufacturing work station. At the work station, the process of making components is carried out using a press machine, namely by carrying out the blanking / punching process on tinplate sheets according to the size needed. Data for 12 months shows maintenance activities that are not optimal and cause high downtime because the machine is damaged, this study aims to find out how much the performance of the machine is using the Equipment Effectiveness (OEE) method as well as the loss of machines that are damaged and reduce very high down time by implementing strategies scheduling of set up intervals on ring sheet press machines with the Reliability Centered Maintenance (RCM) method. The OEE calculation results show an effectiveness value of 77.22%. There are components that are still not good and are below world class standards, namely availability of 79.81% of the standard limit of 90%. And from the results of the six big losses analysis, it is obtained that the losses that are dominant to the low availability value are set up and adjustment with a losses percentage of 10.34%. Factors that affect the high set up and adjustment time are found through fishbone diagrams. RCM analysis is performed to calculate the set up and adjustment time intervals and then make a set up and adjustment time scheduling plan. As well as given suggestions for improvements given through humans, machines, materials, methods, and the environment it is hoped that the effectiveness of the ring sheet press 1 machine can increase.
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Anggraini, Lydia, and Kalimi. "Welding Shape Control of Cross Member Backbone Assembly by Automatic Gas Metal Arc Yaskawa-MA1440 Type." Key Engineering Materials 877 (February 2021): 90–95. http://dx.doi.org/10.4028/www.scientific.net/kem.877.90.
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In order to prevent distortion caused by heat which affects the material deformation, the properties controlled are required. The properties changes and the placement of the mounting position will effect the weld strength that causes cracks and broken joints, therefore it affects the safety of machine construction. Thus, the objective of this paper is to control the shape of cross member backbone assembly by gas metal arc welding (GMAW). The welding is produced by an automatic robot Yaskawa-MA1440 type. In order to obtain the good quality of the result, the welding shape is controlled by a parameters combination of voltage, current, and speed. Yaskawa-MA1440 type is used as the automatic welding machine. The main material used is cold rolled steel coil sheet MJSC270D-OD with a thickness of 1.2 mm. In addition, to control the welding shape, the specified shape design standard is followed include travel speed, gas flow, welding direction, torch tip distance to the workpiece, torch angle and welding angle. The results of visual and dimensional were also examined in this research. Furthermore, the macrostructure i.e. leg length, fusion penetration, throat thickness have been analyzed and confirmed based on the standards used in the auto body vehicle part company. The appropriate parameters for the finest welding shape are defined at the horizontal position using an electric current of 120 A and the welding voltage of 18 V (± 1 V). Thus, the measurement control of macrostructure is defined as reference parameters for mass production of cross member backbone assembly.
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Isaacs, Nigel. "Konka Board: a cement-pumice-tow sheathing board." Architectural History Aotearoa 18 (December 8, 2021): 108–16. http://dx.doi.org/10.26686/aha.v18i.7373.
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Konka board was a New Zealand invention which combined cement, pumice and flax fibre ("tow") into a fibre-cement board, replacing the imported asbestos-cement sheet. Sold soon after manufacture, Konka, it could be nailed or screwed, and over time it hardened. A waterproof plain or stucco plaster finish provided a resilient, borer proof, fireproof, low maintenance house. Three patents created the Konka system – 34,845 for the fibre-reinforced board, 37,354 for the stud and support system into which a concrete grout was poured to lock the panels in place, and finally 52,50 for metal strips to ensure a smooth final plaster surface. A waterproofing additive in the plaster provided the final part of the system.The company quickly setup a national series of agents, with manufacturing ultimately occurring in Wanganui, Gisborne, Christchurch and Timaru. Patent 34,845 was challenged in 1927, with the Privy Council finding in 1930 that it was invalid, opening the way for similar products to be made. The development in the 1930s of NZSS 95 Model Building By-law allowed Konka to be used nationally, without further evidence as to its performance. However, competitor other products were also included e.g. Excell, Rotorua, Thermax, Duro, Wangan, Walasco and the asbestos based Fibrolite.Konka survived until the 1960s, when flax production was in decline, the high labour costs and manufacturing time meant it was no longer competitive. Even so, in a twist of fate it was a Konka style approach which led to cellulose fibre replacing asbestos in fibre-cement sheeting. In the twenty-first century, Konka could even be considered a desirable product – a natural fibre reinforced, composite sheet.
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Singh, Gaganpreet, and Neeraj Pandey. "ALLISCO: pricing multiple joint products." Emerald Emerging Markets Case Studies 5, no. 4 (July 10, 2015): 1–5. http://dx.doi.org/10.1108/eemcs-09-2014-0214.
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Subjectarea Pricing, Marketing Management, Strategic Marketing, Strategic Management. Studylevel/applicability The case can be used for a Pricing Course and Strategic Marketing, Marketing Management and Strategic Management courses delivered to post-graduate management programme (Master’s level) students and/or for Management Development Programme’s. Caseoverview Alliance Intercontinental Sourcing Company LLP (ALLISCO) manufactured Steel Blanks for clutch plates used in two- and three-wheeler automobiles. Steel Blank plates further underwent a processing phase which included coating with leather cover to form the finished clutch plate. The primary raw material used by ALLISCO for its manufacturing process was sheet metal. The processing of the principal raw material resulted in the production of three joint products. The first joint product was “Steel Blank”, the main product; the second joint product was “Inner Circle”, which may be classified as a by-product; the third joint product was the left-over waste material and could be categorized as sheet scrap. The approximate increase in procurement cost of 8 per cent had considerably impacted the firm’s profit margins. The dilemma that Rishabh Singla, Managing Partner, ALLISCO, now faced was how the increased differential could be distributed systematically among the three joint products. The challenge for ALLISCO was to preserve the percentage of gross profit margins by altering its existing pricing strategy. Expectedlearning outcomes Understand the concept of multiple joint products; learn about choosing appropriate pricing strategies to price multiple joint products; comprehend how value-based pricing can extract untapped profits; and understand the importance of retaining gross profit margins (%). Supplementarymaterials Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.
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Kubaszek, Tadeusz, and Marek Góral. "Influence of Air Plasma Spraying Process Parameters on Ceramic Layer in Thermal Barrier Coatings." Solid State Phenomena 267 (October 2017): 207–11. http://dx.doi.org/10.4028/www.scientific.net/ssp.267.207.
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The aim of this study was to examine the possibility of application in APS process Yttria Stabilized Zirconia (YSZ) – Metco 6700 ceramic powder normally used in Low Pressure Plasma Spraying (LPPS) method. Powder grain size is around 10 µm. Parameters such as chemical composition of plasma gases and current were changed to obtain the best result. The experiment was divided into two stages. Firstly, temperature, velocity and size of a molten particle of ceramic powder inside plasma plume were measured via DPV eVolution equipment (TECNAR company) during a different set of process parameters. Plasma plume was also scanned to obtain cross-section contour plots of mentioned properties of the molten particle. Secondly, the same processes were repeated to deposit TBC coatings onto sheet metal to examine the structure.The obtained results showed that it is possible to use fine-grain YSZ powder Metco 6700 for APS process. Obtained ceramic coatings had a thickness from 100 to 240 µm. The plasma sprayed coating was characterised by a smooth surface. The measurement of spraying parameters showed the uniform temperature, velocity and particle size of the powder inside plasma plume.
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Wirth, Jonas, Mirko Schneider, Leon Hanselmann, Kira Fink, Stephan Nebauer, and Thomas Bauernhansl. "An Exploratory Analysis of the Current Status and Potential of Service-Oriented and Data-Driven Business Models within the Sheet Metal Working Sector: Insights from Interview-Based Research in Small and Medium-Sized Enterprises." Sustainability 16, no. 7 (March 22, 2024): 2603. http://dx.doi.org/10.3390/su16072603.
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Responding to changing value creation processes in the sheet metal working sector, where the complexity and interchangeability of products challenge traditional differentiation strategies, this exploratory analysis examines the integration of service-oriented and data-driven business models as new paths to ensure competitiveness, especially for small and medium-sized enterprises (SMEs). This study aims to capture the current state and challenges associated with the implementation of these business models in this sector. This research was conducted through semi-structured interviews with SMEs in the industry. The findings indicate that service-oriented and data-driven business models are not yet widely adopted and that manufacturing companies require support in their implementation. Fields of action were identified for the industry. These are “Creating awareness and understanding”, “Recognizing added value”, “Increasing company maturity”, and “Understanding the change process”. Cooperation between science and industry is essential in tackling these fields of action to ensure the successful integration of such business models in manufacturing companies. This paper identifies challenges in the fields of action that companies must address through a structured approach, promoting awareness, recognizing value, improving organizational maturity, and understanding the change process to successfully implement service-oriented and data-driven business models.
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Hanum, Bethriza. "Quality Control Analysis of Metal Baseplate Finishing process using Statistical Process Control (SPC) and Failure Mode and Effect Analysis (FMEA): A Case Study of Indonesia Company." International Journal of Scientific and Academic Research 02, no. 06 (2022): 09–18. http://dx.doi.org/10.54756/ijsar.2022.v2.i6.2.
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Pt. Anugerah Putra Plating is one of the service companies engaged in the metal finishing industry or, more precisely Zinc Plating (zinc coating process that uses electricity) where the coating process is most widely used for small-sized goods with an extensive production scale and one of the products processed at PT. This Plating Son Award is a baseplate. Problems arising from defects are not up to the specified standards, triggering a decrease in product quality. The company produced baseplate from January 2020 to December 2020 of 53145 pcs, in that period, there were defects of 2980 pcs or 5.60%. The percentage exceeded the company's disability target of 3.50%. Based on direct observation of spaciousness and data processing using FMEA, it can be known that 4 types of defects are contained in baseplate products, namely White Rush, Oily, Black Spot and also Imperfect Coating. The most dominant defects are ranked 1 and 2, with the highest score is White Rush with a Risk Priority Number (RPN) score of 392. For this type of baseplate defect, the root of the problem is (1) Improper rounding distance, (2) unscheduled maintenance of the machine, (3) Improper chemical solution, and (4) a Dirty working environment. Proposed improvements based on the results of the analysis are as follows the types of defects White Rush: (1) Making hook hangers at a distance so that the hcl process is organized, (2) Made sterile storage space and also repair/inspection of routine machines,(3) Making the inspection sheet of chemical solution monitoring if this proposal can be carried out properly, the potential enough results that can be obtained is very -very more efficient and structured time, for the waste of costs can be emphasized to a minimum, as well as improve the quality of the product produced, so that it is expected that (estimate) the cumulative value of the company can increase by 1.8 from 5.6 -3.8 (4)Apply pickets in the respective line -each after business hours.
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El-Meligy, Maha, and Taher El-Bitar. "Three Generations Micro-Allying Steel Processing: Thirty Years of Successive Work at CMRDI." Key Engineering Materials 835 (March 2020): 324–34. http://dx.doi.org/10.4028/www.scientific.net/kem.835.324.
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The present article presents cumulative works, which were carried out in the field of micro-alloying steel processing at Central Metallurgical R&D Institute (CMRDI) and/or full scale trials in collaboration with the Egyptian steel industry.It was agreed upon defining three main generations of processing micro-alloying steel. The 1stgeneration starts officially on 1975 and continues up to 1995, where it deals with using Ti and V as micro-alloying elements for steel long products. On the year 1985, Central Metallurgical R&D Institute (CMRDI) succeeded to implement of HSLA V-micro-alloyed rebar steel grades at Delta steel mills instead of conventional rebar grades.The 2nd generation was starting on late 1995 and continued to 2005. It was dealing mainly with low carbon content steel (0.04-0.08 %) for flat products (plate and sheet). The most successfully used micro-alloying element was Nb. Beside its precipitate forming effect, Nb is working as substitution solid solution strengthener. Moreover, it raises the recrystallization temperature (Tr). Mainly, micro-alloyed flat steels were developed to fulfill the requirements of the American Petroleum Institute (API) specifications 5L- Product Specification Levels (PSL1) and (PSL2) for manufacturing oil and natural gas pipelines. Meanwhile, a newly born Compact Slab Processing (CSP)-hot strip direct rolling technology was created. On years 2002, the metal forming department in CMRDI succeeded to implement controlled rolling of hot strip Nb-steel sheet at the Compact Slab Process (CSP) Machine in Alexandria National Iron and Steel (ANSDK) Company. Controlled hot rolling schedules were used and followed by early and late cooling at the run out table (ROT). Both contracts were fruitfully succeeded to introduce the API X52 grade at ANSDK Company, followed by X60, and X70 steel grades at Ezz Flat Steel (EFS) Company. The essential mechanical properties of the processed API steel sheets were matched with the API 5L-PSL2 specifications.The 3rd generation was initially developed after 2005 and continued up to day. It deals with micro-alloying with special functional elements like Boron (B). Boron was favored as a micro-alloying element for bilateral effects. Boron carbide (B4C) precipitates are the hardest after diamond, which would be reflected on raising the mechanical properties of the steel. Moreover, Boron was favorably used because it delays the temper embrittlement phenomena. On year 2014, the National for Military Industrialization authority requested from CMRDI to collaborate with Military Factory 100 to develop a technology package for processing armor steel plates. Trials were started with a 3rd generation B-micro-alloyed steel alloy. Many other alloying elements were used beside Boron to develop extra high strength 6.0 mm thickness plates. Finish hot rolled plates were then subjected to a subsequent water quenching from 900 °C and followed by tempering at 250 °C for 20 min. Representation 50X50 cm2 steel plates were successfully passed after 3 bullets in front and 3 bullets rear shooting.
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Berdnikova, O., V. Pozniakov, and O. Bushma. "Laser and Hybrid Laser-Arc Welding of High Strength Steel N-A-XTRA-70." Materials Science Forum 870 (September 2016): 630–35. http://dx.doi.org/10.4028/www.scientific.net/msf.870.630.
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The advantages of laser and hybrid laser-arc welding in production of welded structures from high strength steels are increase of efficiency due to rise of the welding rate by order; significant (3 – 5 times) decrease of heat input; reduction of weld size; receiving of fine grain structures in the welds and the heat affected zone increasing strength of the joint and reducing susceptibility to crack formation. Research of the peculiarities of laser and hybrid processes, their effect on weld formation, revealing the advantages and eliminating the disadvantages of laser and arc constituents of the heat sources are currently the main problems for the production engineers and researchers. Therefore, the aim of the investigation lies in determination of the effect of process mode parameters of the hybrid laser-arc and laser welding in high-strength steel welding on formation of the structure of the welded joint metal as well as the analysis of effect of this structure on their mechanical properties. The investigation was focused on the high-strength steel N-A-XTRA-70 which is widely used in European Union countries for manufacture of critical structures of different designations. A laboratory bench was developed for experiments. It was used for carrying out investigation on the process flow sheet which provided location of a consumable electrode arc at some distance ahead of a laser beam during welding proceeding. The laser irradiation source was Nd:YAG-laser DY 044 of ROFIN company (Germany). For the first time the results of carried investigations allowed determining the process modes of laser and hybrid laser-arc welding for producing quality and sound welded joints of the high-strength steel from the point of view of the structure formation and metal phase composition providing high indices of mechanical properties and crack resistance of the welded joints.
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Dananjaya, Danu, Dorina Hetharia, and Sucipto Adisuwiryo. "Perbaikan Kualitas Produk Nestable 100 di PT. Cahaya Metal Perkasa." JURNAL TEKNIK INDUSTRI 10, no. 3 (December 19, 2020): 266–74. http://dx.doi.org/10.25105/jti.v10i3.8427.
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Intisari- Kualitas produk merupakan faktor yang penting dalam meningkatkan profit bagi perusahaan dan merupakan daya saing dengan perusahaan sejenis. Makalah ini mengkaji tentang perbaikan kualitas produk yang dihasilkan industri manufaktur. Kajian ini dilakukan di PT. Cahaya Metal Perkasa yang memproduksi Nestable 100. Persentase cacat produk Nestable 100 ini cukup besar sehingga perlu dilakukan perbaikan kualitas untuk mengurangi produk cacat tersebut. Tujuan penelitian ini adalah mengurangi cacat pada produk Nestable 100 menggunakan konsep Six Sigma melalui tahapan Define-Measure-Analyze-Improve-Control (DMAIC). Identifikasi Critical to Quality dan pendefinisian proses dengan menggunakan diagram Supplier-Input-Process-Output-Customer dilakukan pada tahap Define.. Uji stabilitas proses dengan menggunakan peta kendali dan menghitung tingkat sigma dilakukan pada tahap measure. Tingkat sigma yang diperoleh pada tahap measure sebesar 2,7 sigma. Dengan menggunakan diagram pareto pada tahap Analyze diperoleh tiga jenis cacat yang paling dominan yaitu Flange NG, Punch NG dan Corrugasi NG. Identifikasi penyebab kegagalan terjadinya jenis cacat pada tahap analyze menggunakan Failure Mode and Effect Analysis (FMEA) dan dilanjutkan dengan Fault Tree Analysis (FTA). Hasil Fault Tree Analysis yaitu terjadinya pencetakan corrugasi yang meleset dengan nilai probabilitas 0,517, gelombang dies tidak sama dengan nilai probabilitas 0,572 dan stopper bergeser dengan nilai probablitas 0,360. Usulan perbaikan yang diberikan adalah membuat Checksheet, membuat Record card, dan membuat Jig. Usulan perbaikan diimplementasikan pada tahap control, dan tingkat sigma pada tahap ini naik menjadi 3,04 sigma.Abstract- Product quality is an important factor in increasing profit for the company and is the competitiveness of similar companies. This paper examines the improvement of product quality produced by the manufacturing industry. This study was conducted at PT. Cahaya Metal Perkasa which produces Nestable 100. The defect percentage of Nestable 100 products is quite large, so it is necessary to improve the quality to reduce these defective products. The purpose of this study was to reduce defects in Nestable 100 products using the Six Sigma concept through the Define-Measure-Analyze-Improve-Control (DMAIC) stages. Identification of Critical to Quality and defining the process using the Supplier-Input-Process-Output-Customer diagram is carried out at the Define stage. Process stability testing using a control chart and calculating the sigma level is carried out at the measure stage. The sigma level obtained at the measure stage is 2.7 sigma. By using the Pareto diagram at the Analyze stage, the three most dominant types of defects are Flange NG, Punch NG and Corrugation NG. Identification of the cause of the failure of the defect type at analyze stage using Failure Mode and Effect Analysis (FMEA) and continued with Fault Tree Analysis (FTA). The results of the Fault Tree Analysis were the occurrence of incorrect corrugation printing with a probability value of 0.517, the dies wave was not the same as the probability value of 0.572 and the stopper shifted with a probability value of 0.360. The suggested improvements are to make a Check sheet, create a Record card, and make a Jig. Proposed improvements are implemented at the control stage, and the sigma level at this stage increases to 3.04 sigma.
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Groth, Anders, Erik Schedin, and Ramin Moshfegh. "Investigation of Different Techniques to Evaluate the FLC from Experiments and FE Simulations." Key Engineering Materials 611-612 (May 2014): 41–48. http://dx.doi.org/10.4028/www.scientific.net/kem.611-612.41.
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The formability of sheet metal is highly related to the materials resistance to strain localisation and fracture. The Forming Limit Curve (FLC) is one way to evaluate the tendency to instabilities during the forming operation of a material for different strain states. The Nakazima test is a common technique used to experimentally determine the limiting strains. In this paper a slightly modified version of the proposed ISO-standard used at Outokumpu/Avesta Research Centre (ARC) is presented. The method considers the limiting principal strains before and after failure has occurred. The obtained results from the present approach are compared with previous internal methods used at the company. The previous internal methods consisted of evaluating the limiting principal strains at the maximum punch force before fracture or at a set punch distance before fracture. An austenitic stainless steel grade (254 SMO®) is used in the study. The method will in this work be called the Interpolation Method (IM). A Finite Element (FE) model of the Nakazima test is modelled in LS-DYNA® with the goal to be able to simulate the experimental test. In order to compare the FLC between the experimental and the numerical results, one instability indicator is proposed based on the onset of fracture in the FE model.The Barlat YLD2000 model [1] using 6 parameters based on proof stresses and anisotropic values for different material directions is applied as a constitutive model. The Interpolation Method is promising and will be used during a trial period at Outokumpu ARC in the future testing. Further development is needed for the simulation model.
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Grelewicz-Kowalczyk, Martyna, and Justyna Kaczmarczyk. "The Need and Advantages to Intensify Exploratory and Evaluative Works on the Areas of Undeveloped Zinc and Lead Ores’ Deposits of the Silesian and Cracovian Region." Management Systems in Production Engineering 31, no. 3 (August 1, 2023): 343–54. http://dx.doi.org/10.2478/mspe-2023-0038.
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Abstract Zinc and lead metal ores are minerals intended for strategically producing raw materials for the Polish economy, as indicated in the key Polish document: State Raw Materials Policy (PSP2050). It was specified among others that an important factor that will influence the development of Polish economy will be the access to key mineral raw materials from domestic resources. Currently Polish Zn-Pb ores mining no longer exists as the last operating mine Olkusz-Pomorzany that belonged to the Mining and Metallurgic Plant “Bolesław” Joint Stock Company due to the depletion of resources finished extraction in 2020. Despite this fact there still are areas of great potential in the scope of these minerals in Poland. It is the Zawiercie region, where there has been no extraction of these ores so far and is believed to have the best perspectives for future development. One should connect with this region the nearest future of functioning of the domestic Zn-Pb ores’ mining. It is in this region that the “Zawiercie 3” ore is situated. The ore was documented in 2014 by a private investor within the framework of the permit to search for and identify Zn-Pb ore deposits and it is currently the largest as to resources Zn-Pb ores’ deposit in Poland. Its resources are currently over 35 million tonnes, which constitutes app. 39% of all the documented balance sheet resources of Zn-Pb ores in Poland. The presented geological works performed by the private investor on the area of the “Zawiercie 3” ore and the results that were achieved thanks to them clearly indicate that well-designed and thoroughly performed exploratory and evaluative works that combine international standards and Polish guidelines can significantly influence the degree of documentation and the increase of resources in undeveloped Zn-Pb ores’ deposits.
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Mhetre, R. S., and R. J. Dhake. "TPM Review in a Sheet Metal Parts Manufacturing Company." International Journal of Mechanical and Industrial Engineering, July 2012, 42–47. http://dx.doi.org/10.47893/ijmie.2012.1065.
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In all manufacturing plants the machines and equipment’s are influenced by deterioration in performance due to its age and use, obsolescence due to improvement in technology and failure due to unplanned maintenance Improper maintenance leads to unavailability of machine Hence the effective maintenance becomes useful in improving equipment life, reducing manufacturing cost, improving quality and minimizing the many unforeseen losses which are responsible for reducing the potential of the manufacturing plant. This paper addresses the issue by taking a case study of a manufacturing company. Detailed analysis and calculations are carried out on data collected through discussion, interview and observations. The overall equipment effectiveness (OEE) calculation is used to find out the current situation of the production system of the case company. It calculates the availability of the production system which shows that maintenance system’s effectiveness. The quality rate calculations of the work stations show the conditions of the machines and the worker’s skill and the calculations of the performance efficiency of the work stations show the utilization of the machines. The result of analysis is presented here with recommendations to the company.
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"Using Failure Mode Effect Analysis in a Precision Sheet Metal Parts Manufacturing Company." International Journal of Applied Science and Engineering Research 1, no. 2 (April 16, 2012). http://dx.doi.org/10.6088/ijaser.0020101031.
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Pillai, Akshay S., and V. R. Pramod. "Implementation of Quality Function Deployment in an Aluminum Biriyani Making Vessel Manufacturing Company for Prioritizing the Technical Requirements in Production." International Journal of Innovative Science and Research Technology (IJISRT), June 1, 2023, 1493–98. http://dx.doi.org/10.38124/ijisrt/ijisrt24may1357.
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This study investigates the quality issues in the production of aluminum biryani vessels, which are widely used for cooking biryani across various locations. The absence of well-defined production strategies has been identified as a key factor affecting the quality of these vessels. The research highlights the lack of identification and prioritization of essential technical requirements in the production process. By employing Quality Function Deployment (QFD) as a tool, the study effectively identifies and prioritizes these technical requirements for the aluminum biryani vessel industry. A detailed analysis of a leading aluminum biryani vessel production company in Kerala reveals that the critical technical requirements, in order of priority, include optimal sheet thickness, good surface polishing, proper condensation of molten metal, effective heat treatment, surface machining, accurate drilling, reduced sheet metal weight, selection of quality handle material, proper riveting, appropriate pressure on the hydraulic press, adequate pressure and gap between rolls, periodic design updates, attractive vessel shape, reduced handle weight, efficient grip pattern, hydraulic punch speed, and correct labelling. Adherence to these priorities in the production process is expected to significantly enhance the quality and productivity of aluminum biryani vessels.
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Bauer, Christian, Zaigham-Faraz Siddiqui, Manuel Beuttler, and Klaus Bauer. "Big Data in manufacturing systems engineering – close up on a machine tool." at - Automatisierungstechnik 64, no. 7 (January 28, 2016). http://dx.doi.org/10.1515/auto-2016-0022.
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AbstractWith the increasing connectivity of devices, the amount of data that is recorded and ready for analysis is growing correspondingly. This is also the case for shop floors in flexible sheet metal handling and production. With the growing need for flexibility in production, the availability of machine tools is imminent. This paper shows different approaches that a classical manufacturing systems company such as TRUMPF takes in applying data mining techniques to address the new challenges which come with the Internet of things. In addition to classical methods, a new approach is introduced that does not need any alteration of the machine or its interfaces.
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"Quality Improvement in XY Process at ABC Corporation." International Journal of Innovative Technology and Exploring Engineering 8, no. 6S4 (July 26, 2019): 1338–43. http://dx.doi.org/10.35940/ijitee.f1271.0486s419.
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ABC Corporation is a Taiwanese company that manufactures metal, other related products, and industry in need of thin sheet metal fabrication. The main objective of the study is to improve the M450G1010Z08 that occurred in press brake section, which is the primary problem of the company. The researchers used the Six Sigma Methodology as a technique of reducing quality issues. The research design used in the study is applied research. Based on the result of the study, the researchers found out through stratification process that the main problem was the wrong dimension of M450G1010Z08. In the measure phase, the researchers measured the wrong dimension defects using binomial process capability, which resulted in processing Z value of 1.08, indicating the process is not capable. In the analyze phase, researchers found out that the root cause of the problem is the open size of mould that exceeds 0.20 mm in the front side. In the improve phase, the procedure for modification of mould was done to meet the project target from 14.12% to 4%. After the implementation, the researchers found out that the wrong dimension of M450G1010Z08 was reduced from 14.12% to 2.12%. Also, the process Z increased from 1.08 to 2.03 and investigated that the process performance is capable after the implementation of the improvement. The improvement was done to improve work instruction for modification of the open size of the mould.
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Suci, Sonia Nur Indah, Nora Azmi, and Sumiharni Batubara. "PENINGKATAN KAPASITAS PRODUKSI MELALUI PENERAPAN THEORY OF CONSTRAINT, PENJADWALAN MESIN PARALEL DAN BOTTLENECK SCHEDULING PADA PERUSAHAAN SHEET METAL WORK." JURNAL TEKNIK INDUSTRI 3, no. 2 (July 1, 2013). http://dx.doi.org/10.25105/jti.v3i2.1578.
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<p>This study aims to increase the production capacity of the server rack 08U Type Double ASeries<br />Wallmounted BRI on company X. Current production did not reached the expected target of<br />117 units / week because of the bottleneck workstation. The study began by identifying the bottleneck<br />workstation using the Theory of Constraints (TOC). The result of identification process showed two<br />bottleneck work stations, that are work station Punching and Ovencoating. The production capacity<br />was improved by performing the steps as follows: 1) Add 1 machine at punching station, 2) perform<br />job scheduling on parallel machines at punching station using Short Processing Time (SPT) criteria;<br />3) perform job sequencing on bending station using Weighted Shortest Processing Time (WSPT)<br />criteria; 4 ) adds overtime at ovencoating stations, and 5) implementing bottleneck scheduling method<br />to sequence all jobs. The Results of this study showed that makespan was reduced by 12.03% and<br />production capacity increased by 41.9% so that the production target of 117% can be achieved.</p>
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Setiawan, Reza, Vera Pangni Fahriani, and Sugeng Riyadi. "Optimasi Umur Pakai dan Efektivitas Boiler Akibat Korosi Menggunakan Algoritma Particle Swarm." Jurnal Serambi Engineering 6, no. 1 (January 23, 2021). http://dx.doi.org/10.32672/jse.v6i1.2664.
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One of the causes of boiler pipe breakage is corrosion. The prediction of the lifetime of the tube and superheater effectiveness on the boiler shall be calculated to determine and predict the failure time. The prediction of the lifetime of the tube is a prediction of the time of the failure of the superheater tube in the boiler so that the return can be performed. The effectiveness of the superheater in the boiler is a comparison of the heat transfer rate of the overheated tubes inside the boiler. The research method was research and development, a computational program using an optimization process. The variables used in the study were steam input temperature, metal tube temperature, steam outlet temperature, natural gas input temperature, natural gas mass flow rate, vapour mass flow rate, and natural gas outlet temperature. This study takes a case study of the superheater boiler from the company. The results of calculation of the life expectancy of the operating conditions shall be 11 years when the boiler data sheet is used and 14 years for using the actual boiler data. Superheater effectiveness in boilers with 56% is a data sheet on boilers and 56% of the actual data. Optimization of the particle swarm algorithm predicted a 29 year lifespan. The effectiveness of the superheater in the boiler is 86%.
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Sonmez, Feristah, Gultekin Baysal, Ismet Anik Baysal, and Mehmet Bademcioglu. "Determining the financial performances of BIST-100 energy companies by TOPSIS method." Pressacademia, January 31, 2023. http://dx.doi.org/10.17261/pressacademia.2023.1680.
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Purpose - The purpose of this study, Borsa Istanbul 100 (BIST100) of the financial performance of energy companies traded multi-criteria decision making methods, TOPSIS (Technique for order preference by Similarity to ideal solution) method is measured. Methodology - For this purpose, 5 energy companies traded in BIST in 2021 and whose data are regularly accessed have been included in the scope of the study. The annual balance sheet and income statements of the companies were used in the study. The balance sheets and income statements of the companies within the scope of the research for the year 2021 were taken from the official website of the Public Lighting Platform (KAP). During the period when the application part of this study was conducted, the data of the year 2022 could not be used due to the fact that the data of the year 2022 has not yet been published. The obtained data were measured by TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method, which is one of the multi-criteria Decisionmaking methods, and the performance of the companies were analyzed and compared among themselves. Findings - Ipek Natural Energy Resources Research and Production A. One of the companies included in the study as a result of the analyzes performed by the TOPSIS method.Sh. ((IPEK) was found to be the company with the best data in terms of financial performance in the analyzes carried out in accordance with the criteria included in the evaluation. After this company, the second best company in terms of financial performance is Koza Anadolu Metal Madencilik Işletmeleri A.Sh. He appeared as a (COCOON). Conclusion - In the light of the analyzes carried out in the study; IPEKE company ranked first as the best company in terms of financial performance. Ardın KOZAA of IPEKE company ranked second, ASELS company ranked third, AKSEN company ranked fourth and VESTL company ranked last in terms of financial performance among the 5 companies included in the study. Dec. Apart from these data, it can be said that changing the December period to be based on different studies, using different financial ratios, the degree of importance given to criteria, using other multi-criteria decision-making methods (MSCS) such as MOORA other than TOPSIS may give results that may change the performance ranking. Keywords: BIST-100, TOPSIS, financial performance, energy, MCDMM JEL Codes: C61, M41, M49