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Journal articles on the topic 'Welding (Metal working)'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Behrens, B. A., D. Gruß, and A. Jenicek. "Stud welding within sheet metal working tools." Production Engineering 5, no. 3 (2011): 283–92. http://dx.doi.org/10.1007/s11740-011-0304-3.

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2

Ingle, A. H. "A Literature Review on Fabrication of Portable Spot Welding Machine." International Journal for Research in Applied Science and Engineering Technology 11, no. 6 (2023): 1193–97. http://dx.doi.org/10.22214/ijraset.2023.53844.

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Abstract: Welding is a process of joining similar metals by the application of heat. Welding can be done with or without the application of pressure. While welding, the edges of metal pieces are either melted or brought to plastic condition. Welding can be done with the addition of filler materials or without it welding is used for making permanent joints. It is used in the manufacture of automobile bodies, aircraft frames, railways wagons, machine frames, structural work, tanks, furniture, boilers, general repair work and ship building. At most in all metal working industries welding is used.

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Goncharov, N. G., G. V. Nesterov, A. A. Yushin, and A. I. Azarin. "Investigation of Heat Input during Pipe Welding by Various Techniques and Methods." Occupational Safety in Industry, no. 12 (December 2021): 29–36. http://dx.doi.org/10.24000/0409-2961-2021-12-29-36.

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The article presents the results of the experimental investigations on studying the effect of heat input on the metal-physical properties of the welded joints of pipes with the diameters of 114–406 mm and the wall thicknesses of 9–21 mm from steels X42–X46 according to API 5L standard with various welding technologies. The analysis is given concerning the thermal welding cycles using technologies of manual arc welding with electrodes with a basic and cellulose type of coating, as well as automatic welding technology under a flux layer. The parameters of thermal welding cycles were measured usi

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Amza, Gheorghe, Gabriel Iacobescu, Dan Florin Niţoi, Cătălin Gheorghe Amza, and Zoia Apostolescu. "Contributions to the Environmental Impact of the Process of Welding Work in the Environment of Protective Gases." Advanced Materials Research 1138 (July 2016): 101–6. http://dx.doi.org/10.4028/www.scientific.net/amr.1138.101.

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Paper presents the main pollutants that appear Gas metal arc welding, the main chemical reactions take place in the melting bath where results the pollutants, determining the impact on the working environment by calculating the coefficient of pollution. The optimization of welding process gives a coefficient of minimum pollution and determines the influence of welding parameters of the system on the appearance of major pollutants elements.

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Hilkes, Jan, and Jürgen Tuchtfeld. "Underwater “Wet Welding & Cutting” with NAUTICA Stick Electrodes for Marine and Offshore Applications." Biuletyn Instytutu Spawalnictwa, no. 3 (June 2020): 47–62. http://dx.doi.org/10.17729/ebis.2020.3/5.

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The basics of diving and working under water have been highlighted and explained as such, while these circumstances have also great influence on the welding behavior of the consumables applied. The challenge is in the execution of the welds and repairs. The paper covers the diving, welding and metallurgical aspects of underwater „wet” welding & cutting using covered electrodes based on industrial examples and applications for joining and repair welding. Shielded Metal Arc Welding (SMAW) and covered stick electrodes are a very versatile, flexible, simple and practical welding process, for t

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6

Schramkó, Márton, Zoltán Nyikes, László Tóth, and Tünde Anna Kovács. "Investigation of the ultrasonic welded stainless steel corrosion resistance." Journal of Physics: Conference Series 2315, no. 1 (2022): 012028. http://dx.doi.org/10.1088/1742-6596/2315/1/012028.

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Abstract This article will present the ultrasonic welding technology of the stainless steel sheets, the joining with agreeing of the material science theory and metal-working rules-based executed experiments. Fusion welding is well understood and investigated in the case of steel. The ultrasonic welding in the case of metals causes different changes in the metals structure. The ultrasonic welding cause complex effect during the welding process. These effects are plastic deformation, heat, and ultrasound vibration. The goal of this research is to show the case of the experimented welded stainle

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7

Meng, Ling Dong, Zhi Jie Liang, Qing Zhang, and Jun Wei Yang. "Research and Development of High Energy Pulse Precision Cold–Welding Technology." Advanced Materials Research 291-294 (July 2011): 988–94. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.988.

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High energy pulse precision cold–welding technology is a new welding technology that using high-energy pulsed, which arc produced between tungsten electrode and the workpiece, to melt the base metal and welding wires quickly. The quality and accuracy of this technology are equal to laser welding. It can repair the surface of parts, pitting, cracks and other defects of special-shaped surface. This article discusses research process of the High energy pulse precision cold–welding technology and its working principle, performance characteristics and equipments. It also presents the technology of

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8

Hussein, N. I. S., Mohamad Nizam Ayof, and Tan Huay Kean. "Review on Effect of Repetitive Rework on Dissimilar Austenistic Stainless Steel Pipes by Using GMAW Orbital Welding." Applied Mechanics and Materials 789-790 (September 2015): 146–50. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.146.

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Dissimilar metal welding is widely applied to meet the rquirement of transition in mechanical properties and/or difference in working conditions. For instance, even though AISI 304 and AISI 316L are both belong to austenitic stainless steels, but they are applied in different working environment. AISI 304 is used at high temperature applications, whereas AISI 316L is used at low temperature. Repair welding is able to return a part back to its normal service life if weld failure happened due to service deterioration or defects during fabrication stage. However, repetitive heat input due to repa

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9

Olshanskaya, Tatyana, Dmitry Trushnikov, Alyona Dushina, Artur Ganeev, Alexander Polyakov, and Irina Semenova. "Microstructure and Properties of the 308LSi Austenitic Steel Produced by Plasma-MIG Deposition Welding with Layer-by-Layer Peening." Metals 12, no. 1 (2022): 82. http://dx.doi.org/10.3390/met12010082.

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This paper investigates the effect of cold working via layer-by-layer peening on the microstructure and properties of a 308LSi steel workpiece produced by the wire deposition welding with a consumable electrode following the principle of 3D printing. The microstructure, phase composition and mechanical properties of the metal are studied before and after the workpiece synthesis. In the microstructure of the workpieces produced by peening, there is, in addition to austenite, a small quantity of fine-dispersed carbides and residual δ-ferrite in the interdendritic spaces. It is demonstrated that

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Pilat, Zbigniew, and Jacek Szulc. "Concept of the Model Robotized Cell for Plasma-GMAW Hybrid Welding." Applied Mechanics and Materials 613 (August 2014): 43–52. http://dx.doi.org/10.4028/www.scientific.net/amm.613.43.

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Activities in the field of increasing the productivity of the production lines for welding thick metal sheets are focused in two directions. On the one hand, new technologies are being developed for welding, deeper weld penetration and faster welding process. On the other hand are focused on automation of these operations, which have the effect of reducing cost and increasing efficiency. Improved are also the working conditions of people employed in the welding processes. In both these directions the hybrid welding Plasma-GMAW could fulfill all requirements as a new technology. The article giv

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11

Brandizzi, Marco, Annunziata Anna Satriano, and Luigi Tricarico. "CO₂ Laser - MIG Hybrid Welding of Titanium Alloy." Advanced Materials Research 264-265 (June 2011): 1270–80. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.1270.

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CO2 laser - Metal Inert Gas (MIG) hybrid welding process was investigated in the butt welding of Ti-6Al-4V titanium alloy sheets of 3.0mm in thickness. Using a Design of Experiment (DoE) approach, bead on plate tests were planned with the aim to analyze the effect of laser and laser-MIG welding parameters on the bead shape, hardness profiles in the weld cross section and welding efficiency. Butt welds performed in correspondence of the bead on plate working conditions which assure the complete penetration of the samples, the absence of undercuts and the maximum welding efficiency, confirm the

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12

Lieth, Haider Mahdi, Murtadha Abbas Jabbar, Raad Jamal Jassim, and Raheem Al-Sabur. "Optimize the corrosion behavior of AISI 204Cu stainless steel in different environments under previous cold working and welding." Metallurgical Research & Technology 120, no. 4 (2023): 415. http://dx.doi.org/10.1051/metal/2023058.

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Enhancing corrosion resistance in stainless-ssteel alloys is a paramount objective in the petroleum industry. This study investigated the effects of the previous cold working and welding processes on the mechanical properties and corrosion rates of 204 Cu stainless steel in different aggressive environments (crude oil, freshwater, and seawater). The experimental sets were supported by microstructure analysis. The mean weight loss method was employed to determine the corrosion rates, which were optimized using the Taguchi method. The ferrite and austenite phase bands, as well as the deformed po

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Kolomeichenko, Aleksandr, and Nikolay Titov. "Technology of Reconditioning with Hardening of Working Elements of Construction and Road Machines by Composite Coatings." MATEC Web of Conferences 334 (2021): 02017. http://dx.doi.org/10.1051/matecconf/202133402017.

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The article gives the description of the developed technology of increasing wear resistance of working elements of national and foreign constructional and road machines by composite coatings, obtained on working elements cutting surfaces applying Carbo Vibro Arc Hardening method (CVAH). The technology includes the following basic operations: cleaning and fault detection of the working element, removal of the worn cutting element, compensating element production, its sharpening and welding, preparation of metal and ceramic paste for Carbo Vibro Arc Hardening method (CVAH) and its application, C

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Karthikeyan, V. "Identification of Type of Metals by Using Heat Transfer Rate." International Journal for Research in Applied Science and Engineering Technology 11, no. 5 (2023): 4232–36. http://dx.doi.org/10.22214/ijraset.2023.52551.

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Abstract: Metals are advances in manufacturing processes which is the industrial revolution. It is very important to accurately identify types of metal when working with metal materials, and this is particularly important in maintenance welding. Metals with higher carbon content are sensitive to hot-cracking and hardening, which can result in poor ductility for welding projects. If it want to be simply identify a piece of scrap metal, it can be done by evaluating its colour, weight and composition. The common ways to identify metal is surface appearance, spark test, chip test, magnet test, har

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15

Sukmana, Irza, Hafiz Favian Gustin, and Tarkono . "Pengaruh kedalaman las pada pengelasan gesek puntir dua muka logam Magnesium AZ31." Jurnal Energi Dan Manufaktur 14, no. 1 (2022): 10. http://dx.doi.org/10.24843/jem.2021.v14.i01.p02.

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Friction Stir Welding (FSW) categorized as solid-state welding method. The working principle of FSW is to utilize combination of rotation of tool and penetration force to produce heat energy which changes the workpiece phase to be semi-solid and make in possible to joined. Magnesium is a light metal that is widely used in aircraft, automotive, construction, and medical equipment components. In this study, AZ31 magnesium metal welding was joined by friction stir welding method which was applied to the upper and lower surfaces of the workpiece or called double side friction stir welding (DFSW).

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16

Anishchenko, Yuliya, Anna N. Vtorushina, and Vasilisa Gorshkova. "Estimation of Efficiency of Welding Incident Mitigation Measures at Mechanical Engineering." Materials Science Forum 970 (September 2019): 24–34. http://dx.doi.org/10.4028/www.scientific.net/msf.970.24.

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Welding is the basic process of metal working and metal structural repair in mechanical engineering and other industrial settings. However, welding is considered to be potentially hazardous work. Welding can be a source of injury causing eye damage, body burns, mechanical injuries and poisoning. The present paper identified the possible causes of burns by the Causal tree method. The probability of initial events, leading to burn, was estimated by the expert evaluation method. The severity of the injury consequences for welder's health was assessed. The severity of the consequences was defined

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17

Górka, J., A. Czupryński, and M. Adamiak. "Properties and Structure of Nanocrystalline Layers Obtained by Manual Metal Arc Welding (MMA)." Archives of Metallurgy and Materials 62, no. 3 (2017): 1479–84. http://dx.doi.org/10.1515/amm-2017-0229.

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AbstractThe present paper is the result of the investigations of the properties and structure of nanocrystalline layers deposited from iron-based nanoalloy on steel S355N substrate by manual metal arc welding method (MMA). In the process of welding a 100 A current intensity was used with desiccation preheating at 80°C while maintaining the interpass temperature at range of 200°C. The resultant deposit welds were subjected to macro and microscopic metallographic examination, X-ray phase analyses and crystallite size was analyzed by X-ray diffractometry (XRD), additionally EDX chemical compositi

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18

Sobachkin, Aleksei V., Аlexander A. Sitnikov, and Аlexander P. Sviridov. "Evaluation of Wear Resistance of Products on the Basis of Mechanically Activated Materials." Applied Mechanics and Materials 698 (December 2014): 374–77. http://dx.doi.org/10.4028/www.scientific.net/amm.698.374.

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This paper is devoted to the actual topic of increasing wear resistance of working parts soil cultivating machines. Established that the introduction in welding layer carbides of metal via powder electrodes of SHS materials increases the wear resistance of the deposited layer, which will significantly increase the service life of the working bodies of tillage equipment.

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19

Istomin, A. B., I. V. Lizunov, V. O. Dmitriev, and V. B. Kozlov. "Methods of restoring parts in repairs." Glavnyj mekhanik (Chief Mechanic), no. 6 (May 25, 2021): 59–73. http://dx.doi.org/10.33920/pro-2-2106-05.

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The article presents the review of the main methods of restoration and repair of machine parts: mechanical and bench work, welding, surfacing, metal coating, chrome plating, nickel plating, steeling (iron plating), bonding, hardening the surface of parts and restoring their shape under pressure. The areas of application of each method, its advantages and disadvantages are noted. Welding and surfacing are used to restore more than half of all repaired car parts. With the help of welding, cracks and fractures on the frame and platform are repaired, patches, various overlays and reinforcing gusse

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20

Romek, Dawid, Dariusz Ulbrich, Jaroslaw Selech, Jakub Kowalczyk, and Roksana Wlad. "Assessment of Padding Elements Wear of Belt Conveyors Working in Combination of Rubber–Quartz–Metal Condition." Materials 14, no. 15 (2021): 4323. http://dx.doi.org/10.3390/ma14154323.

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Elements of belt conveyors, like other machine parts, are subject to wear processes. The conveyors transporting the spoil in the quartz sand mine are exposed to accelerated wear due to the effect of quartz on metal elements. Intensive wear of metal parts leads to downtime and the need to replace damage parts which generates additional costs. Therefore, it is important to perform surface treatment of metal elements, which will allow to extend the operation time of belt conveyors by reducing wear. The main objective of the article is to determine the impact of the pad welding process of the surf

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21

Anishchenko, Yuliya V., Anna N. Vtorushina, T. A. Zadorozhnaya, and V. E. Gorshkova. "Welding Incident Mitigation at Mechanical Engineering." Materials Science Forum 927 (July 2018): 6–12. http://dx.doi.org/10.4028/www.scientific.net/msf.927.6.

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Mechanical engineering is one of the most dynamically developing industries in many countries. Welding at the same time is one of the main processes of metal working in various industries, especially in mechanical engineering. The World Health Organization considers welding works to be harmful and dangerous for health. The present paper identifies the main factors leading to injuries during welding works at a stationary workplace. A causal tree for a welding incident has been devised and analyzed. Probability of an incident was estimated by using the expert evaluation method. It was found out

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22

Qu, Ting Ting, Ke Tong, Li Xia Zhu, Shen Cong, and Cai Hong Lu. "Failure Analysis on Leakage of the Circumferential Weld of Steel 20 Buried Pipeline." Materials Science Forum 944 (January 2019): 930–37. http://dx.doi.org/10.4028/www.scientific.net/msf.944.930.

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Nowadays, the welding quality of circumferntial welds is the main influencing factor of the service behaviors of long-distance transport pipeline, and the accidents caused by the circumferential welding defects have get extensive attention. To figure out the leaking reason of circumferential weld of the steel 20 buried pipeline, with macro inspection, nondestructive testing, physical and chemical properties, methods of medium leakage and fracture analysis, we found that the welding defects in the weld toe are mainly responsible for pipeline leaking. The welding defects of circumferential weld

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23

Brezinová, Janette, Miroslav Džupon, Marek Vojtko, et al. "Application of Cold Metal Transfer Welding for High Pressure Die Casting Mold Restoration." Metals 9, no. 11 (2019): 1232. http://dx.doi.org/10.3390/met9111232.

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This paper presents results of the research focused on the possibility of the restoration of the shape parts of molds made of X15CrNiSi20-12 (EN 100 95) heat-resistant austenitic chromium-nickel stainless steel working in high-pressure die casting of aluminum alloys by clad welding. There were tested two welding wires—E Ni 6625 and E 18 8 Mn B 2 2—deposited on X15CrNiSi20-12 (EN 100 95) tool steel using cold metal transfer (CMT) welding in a protective atmosphere of Ar. The resistance of welds was tested against dissolution in molten aluminum alloy ENAC-AlSi9 and the testing procedure was desi

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Kasińska, Justyna, Monika Madej, and Sławomir Rutkowski. "EFFECTS OF RARE-EARTH METAL OXIDES ON THE TRIBOLOGICAL PROPERTIES OF PADDINGS FOR USE ON MINING MACHINE PARTS." Tribologia 300, no. 2 (2022): 23–32. http://dx.doi.org/10.5604/01.3001.0015.9720.

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The article presents the results of research on pad welds made using consumables in the process of metal active gas welding (MAG) combined with plasma arc welding (PAW). The pad weld consisted of a buffer layer and a wear-resistant working layer. Cerium, yttrium and lanthanum oxides were added to the powders to modify the working (active) layer. The HV10 hardness and friction coefficient testing was followed by measuring wear tracks and determining wear indicators (maximum wear track depth and area). Yttrium oxide was found to have a remarkably beneficial effect on nickel-based pad welds. In t

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Kim, Chang Hyun, Tae Yong Choi, Ju Jang Lee, Jeong Suh, Kyoung Taik Park, and Hee Shin Kang. "Reconfigurable 3D Laser-Stripe Sensor for Welding Processes." Materials Science Forum 580-582 (June 2008): 691–94. http://dx.doi.org/10.4028/www.scientific.net/msf.580-582.691.

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This paper describes the development of a reconfigurable 3D profile measurement system for welding robot. The system consists of a PC based vision camera and a stripe-type laser diode. The total system is assembled into a compact module which can be attached to the endeffector of welding robots. Especially, the developed system is designed to operate at different working distances. For this purpose, the reconfigurable mechanism which adjusts the focal length and the relative position between the camera and the laser diode is devised. These two configurations are automatically changing, accordi

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26

Tihanov, Tanasache Daniel, Carmen Florea, Emilia Binchiciu, and Victor Geanta. "Armor with Hyper-Entropic Behaviour and Self-Protection." Applied Mechanics and Materials 656 (October 2014): 30–36. http://dx.doi.org/10.4028/www.scientific.net/amm.656.30.

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The paper presents research conducted in order to achieve some self-shielding armor with high and pre-established strength to intense wear abrasion combined with corrosion, in damp environment, with sulfur content, at temperatures up to 500°C. The first stage was dedicated to the elaboration of the concept of armor and the hardfacing technology, using a hyper-entropic filler metal which assures a self-protection characteristic. The samples used in the experiment were mild steel plates covered with weld in the rhomboid form. In the next stage some investigations were conducted in order to manuf

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Mauliza, Aris, and Usman Usman. "Analysis of the effect of current on tensile strength of aisi 1050 material in the SMAW welding process." Journal of Welding Technology 4, no. 1 (2023): 22–26. http://dx.doi.org/10.30811/jowt.v4i1.2996.

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Shield Metal Arc Welding (SMAW) which is also called Electric Arc Welding is a welding process that uses heat to melt the base material or base metal and electrodes (fill material). Meanwhile, at the processing stage, the appropriate current strength will be selected to the working position. The purpose of this study was to determine the effect of welding current on the mechanical strength of AISI 1050 medium carbon steel. The currents used were 100 A, 125 A and 150 A. After doing research, SMAW welding on AISI 1050 medium carbon steel with variations in current affects the value tensile stren

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Li, Tianqi, Yingying Zhang, Lei Gao, and Yunhao Zhang. "Optimization of FCAW Parameters for Ferrite Content in 2205 DSS Welds Based on the Taguchi Design Method." Advances in Materials Science and Engineering 2018 (December 27, 2018): 1–7. http://dx.doi.org/10.1155/2018/7950607.

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This study presents the Taguchi design method with L9 orthogonal array which was carried out to optimize the flux-cored arc welding (FCAW) process parameters such as welding current, welding voltage, welding speed, and torch angle with reference to vertical for the ferrite content of duplex stainless steel (DSS, UNS S32205) welds. The analysis of variance (ANOVA) was applied, and a mathematical model was developed to predict the effect of process parameters on the responses. The results indicate that welding current, welding voltage, welding speed, torch angle with reference to vertical, and t

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Butenko, Viktor I., Albert N. Isaev, Tatiana M. Bagdasaryan, and Alexander A. Cherepenjko. "Combined strengthening treatment of welded joints of metal pipes of large diameter." MATEC Web of Conferences 226 (2018): 01030. http://dx.doi.org/10.1051/matecconf/201822601030.

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This article describes a method and device for the combined hardening treatment of welded joints of large diameter metal pipes, which allow to increase their strength and corrosion resistance due to the wave effect on the weld joint of the hardening tool and feeding the suspension into the working area without disturbing the overall process of welding pipes.

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Zhabrev, L., S. Chuppina, A. Shamshurin, E. Lebedeva, and O. Panchenko. "EVALUATION OF COATINGS TENDENCY TO THE PORES AND NON-METAL INCLUSIONS FORMATION IN A WELD." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 5, no. 9 (2020): 67–80. http://dx.doi.org/10.34031/2071-7318-2020-5-9-67-80.

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The task of welding steel elements painted with various coatings is found in a number of industries at the stages of factory assembly and installation of large-sized structures, as well as during repair and restoration work. The porosity of the welded metal is the most common defect in electric arc welding without removing the coating, and the tendency to pore formation is a normalized parameter in the certification of interoperable primers (EN ISO 17652-2: 2003). The studies carried out cover wide-spread polyacrylate, alkyd, epoxy, polyvinyl butyral primers in an extended working thicknesses

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Prasojo, Budi, and Yunan Sadli Nasution. "Hot tapping process analysis on gas distribution pipes online service using Shielded Metal Arc Welding." Journal of Welding Technology 4, no. 1 (2023): 9–15. http://dx.doi.org/10.30811/jowt.v4i1.

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In a piping system makes it possible to add branching into an existing piping system. In this research will discuss about installation 12 " branch pipe in to 16” existing pipe. The system should be installed without interrupting the operation of the pipeline to avoid huge losses. Hot-tapping is a technology that works to create branching on the online service pipe condition. Calculation and analysis of the results to ensure the process of hot-tapping absolutely safe to operate. parameters that must be considered include the heat input, the operating pressure during welding hot-tapping process

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Nabela, Danvil, Dian Fera, Susy Sriwahyuni, and Maiza Duana. "Work-Related Injury among Welders Working in Metal Workshops of Johan Pahlawan Districts, Aceh Barat." J-Kesmas: Jurnal Fakultas Kesehatan Masyarakat (The Indonesian Journal of Public Health) 9, no. 1 (2022): 14. http://dx.doi.org/10.35308/j-kesmas.v9i1.5230.

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A work accident is an unexpected event or event that can cause harm to the work process, causing human and property casualties. Therefore prevention must be carried out by reducing hazard factors that lead to accidents, taking into account unsafe action, unsafe conditions, and safety management: system, the worker's mental condition, and the worker's physical condition. The method in this research is descriptive-analytic with a cross-sectional design. We took a sample of 45 respondents. The sampling technique is the total population. We performed a logistic regression test using the Stata 14 a

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Zhao, Wen Hui, Zhen Yun Duan, and She Liu. "Study and Application on Automatic Welding of Bellows Based on Laser Measurement." Applied Mechanics and Materials 33 (October 2010): 66–69. http://dx.doi.org/10.4028/www.scientific.net/amm.33.66.

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Metal bellows are widely used as its many advantages. However, in the process of welding, the welding quality and welding speed is affected by the operators' ability very much. For this, This automatic welding system based upon on-machine laser measurement is developed for the bellows in the large transformer cooling system. This system is composed of a laser profilometer, the motion control system and the mechanical parts, etc. On-machine measurement is conducted on the axial cross sections of the bellows using the laser profilometer, and the accurate coordinates of the welds in radial and ax

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Zaripov, M. Z., Z. R. Mukhametzyanov, and A. N. Pudovkin. "Specific features of applying machine welding with drop transfer in repair of operating pipelines." Bulletin of Science and Research Center of Construction 37, no. 2 (2023): 98–106. http://dx.doi.org/10.37538/2224-9494-2023-2(37)-98-106.

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Introduction. Repair of pipelines under pressure of pumped media by means of welding is relevant to reduce the complexity of work. However, it may reduce the safety of work. To solve this issue, the authors consider applying the technological processes of machine welding with controlled drop transfer.Aim. To determine the main parameters of technological processes of machine welding with controlled drop transfer, affecting the safety of welding.Materials and methods. The authors developed a theoretical model for calculating the working thickness of a pipeline wall under pressure which they use

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Schaefer, Frank Helmut. "Ultrasonic Welding of Polyamide and Polycarbonate Plates." Key Engineering Materials 450 (November 2010): 165–68. http://dx.doi.org/10.4028/www.scientific.net/kem.450.165.

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Ultrasonic welding of plastic is state-of the-art technology. The thermal rise in the bonding area is produced by absorption of vibrations introduced. In the contraction area, frictional heat is produced so that material plasticizes locally, forging an insoluble connection between both parts within a very short period of time. The prerequisite is that both working pieces have a near equivalent melting point. To be able to extend the known influences and limits due to ultrasonic welding of plastic and metal parts the bonding process is of interest. In this study, the author applied the ultrason

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Anaele, Justus Uchenna, Chijioke Peter Egole, Gaius Chukwuka Nzebuka, and Anthony Nnamdi Nnodum. "Effect of Electrode Coating on Austenitic Stainless Steel Weld Metal Properties." Advanced Materials Research 1152 (April 2019): 19–30. http://dx.doi.org/10.4028/www.scientific.net/amr.1152.19.

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The effect of electrode coating on austenitic stainless steel weld metal properties was studied. Manual metal arc welding method was used to produce the joints with the tungsten inert gas welding serving as the control. Metallographic and chemical analyses of the fusion zones of the joints were conducted. Results indicate that the weldment produced from E 308-16/12 lime-titania electrode has a higher ductility and strength of about 36% in terms of percentage elongation and 517 N/mm2respectively, compared to 26% and 18% and 475 N/mm2and 425 N/mm2respectively, obtained from weldments produced fr

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Schramkó, Márton, Abdallah Kafi, and Tünde Anna Kovács. "Analysis of the Harmful Effects of UV Radiation Generated During Welding." Acta Materialia Transylvanica 5, no. 2 (2022): 89–92. http://dx.doi.org/10.33924/amt-2022-02-08.

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Abstract Arc welding produces several harmful health effects on the welder. The authors aimed to determine the intensity of ultraviolet (UV) radiation as a function of distance from the welding. The research focused on the UV radiation generated during the arc welding process as it is a widely used process in industrial practice today. During the experiment, several tests were performed on the gas metal arc welding process (GMAW). This procedure is also used automated in the industry, so research can help to designate a specific safety zone in an industrial area so that there is no need to sep

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Amit Kumar and Vijayakumar P. "Comparison of Weld Built-up by FCAW and MIG Welding on Damaged Low Cr-Mo Alloy Steel Tube in Boiler Application." International Journal of Science and Research Archive 8, no. 2 (2023): 492–505. http://dx.doi.org/10.30574/ijsra.2023.8.2.0243.

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In boiler application low Cr-Mo tubes are being used and in manufacturing or working these tubes are getting damaged. ASTM and ASME BPVC (Boiler Pressure vessel code is allowing wall thinning of tubes by 10%. Any damage more than 10% of wall thickness is causing rejection of Tube. As ASTM and ASME has provision for weld build-up on defected or damaged portion of Boiler Tubes, hence I am going to compare two welding process for the weld built-up on low Cr-Mo alloy steel tubes. In current practice the damaged tubes are being scrapped in boiler manufacturing as well as in running boilers. After t

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Zhou, Siyun, Yue Wang, Chen Yu, et al. "Metal Exposure-Related Welder’s Pneumoconiosis and Lung Function: A Cross-Sectional Study in a Container Factory of China." International Journal of Environmental Research and Public Health 19, no. 24 (2022): 16809. http://dx.doi.org/10.3390/ijerph192416809.

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Long-term inhalation of welding fume at high exposure can cause welder’s pneumoconiosis, and metals in welding dust are associated with respiratory dysfunction. This cross-sectional study, which contains 384 Chinese male workers who were or had been working in a container factory, aimed to assess the potential risk of haemal and urinary metal content in welder’s pneumoconiosis. Further, we investigated their effects on lung function parameters. Metal content and lung function were measured using inductively coupled plasma–mass spectrometry (ICP-MS) and spirometer, respectively. The concentrati

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Roslan, Muhammad Yusuff Izzuddin, and Ahmad Redza Ahmad Mokhtar. "Metal Coating by TIG Arc Deposition Method." Journal of Modern Manufacturing Systems and Technology 6, no. 2 (2022): 111–18. http://dx.doi.org/10.15282/jmmst.v6i2.8558.

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Metal (Aluminum) coating was prepared on stainless steel substrate by arc deposition method using TIG Welding machine. Plasma spray is a type of metal coating that is widely used in the industry and its preparation cost is expensive. It is also the most flexible method to apply a wide variety of coatings on a substrate. To reduce the cost of the set-up, the plasma will be generated by using a TIG welding machine to replace the plasma spray. The use of powder which is aluminium as a coating raw material causes almost no restrictions on the use of coating materials used in the plasma melting pro

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Trishkina, I. A., E. I. Storozheva, A. Yu Feitullaev, and R. E. Novikov. "A METHOD FOR ASSESSING THE OPERATIONAL RELIABILITY OF WELDED CONNECTIONS FROM 09G2S STEEL WORKING IN ENVIRONMENTS CAUSING CORROSIVE CRACKING." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 4(251) (April 23, 2021): 72–81. http://dx.doi.org/10.35211/1990-5297-2021-4-251-72-81.

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Based on the study of the structure and mechanical properties of the metal of welded joints of 09Г2С steel, a metallographic method has been proposed, which makes it possible to establish the fact of post-weld heat treatment when determining the causes of corrosion cracking in aggressive environments of petrochemical and oil refineries, as well as supervising welding operations.

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Stopyra, Michał, and Janusz Adamiec. "Microstructural Stability of Long-Term Annealed AZ91 Magnesium Alloy Weld Joint." Materials Science Forum 782 (April 2014): 161–65. http://dx.doi.org/10.4028/www.scientific.net/msf.782.161.

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Welding and pad welding are widely used methods of repair and regeneration of defective magnesium alloys castings. AZ91 is one of the most popular magnesium alloys used at temperature up to 120°C. Therefore there is need to study the influence of welding and elevated temperature exposure on the microstructure and properties of AZ91 weld joints. This paper discusses microstructural stability of AZ91 gas tungsten arc weld joint in T6 condition (solution treated and aged). In order to examine the weld joints microstructural stability, the long-term annealing has been carried out at 120°C. Hardnes

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Ivanov, Yu V. "Improvement of the Acoustic Characteristics of Pneumatic Mechanisms for Contact Welding Machines." Occupational Safety in Industry, no. 2 (February 2021): 20–23. http://dx.doi.org/10.24000/0409-2961-2021-2-20-23.

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Welding production forms the basis of assembly production in many branches of industry. Welding equipment is the most numerous in the environment of assembly of transport engineering units. This equipment is used both at the initial stage of assembly operations and at the final stage. The most common machines are single-point and multi-point welding with pneumatic drive. Traditional disadvantage of welding machines using pneumatic drives is the presence of intense acoustic flows at the outlet of the energy carrier, the operating sound level of which significantly exceeds the established sanita

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Atroshchenko, V. V., A. S. Selivanov, V. S. Lobachev, Yu V. Logachev, and A. R. Sadrislamov. "The study of the effect of parameters of the mode of copper friction stir welding on the mechanical properties and electrical conductivity of welded joints." Frontier materials & technologies, no. 3 (2022): 50–60. http://dx.doi.org/10.18323/2782-4039-2022-3-1-50-60.

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Copper is widely used when producing current-conducting parts, basically the electrotechnical power equipment buses. Traditional ways of welding copper become complicated because of high thermal conductivity, fluidity, significant oxidation at fusing temperature, and susceptibility. The application of the solid-phase welding methods, a prominent representative of which is friction stir welding (FSW), is one of the ways to solve problems when welding copper. The paper presents the experimental study of the influence of a tool working part shape and the welding mode parameters: welding rate, too

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Cicic, Dumitru Titi, Corneliu Rontescu, Ana Maria Bogatu, Catalin Gheorghe Amza, and Oana Roxana Chivu. "The Influence of the Deposit Parameters on the Medium Chemical Composition of the Welded Joint." Revista de Chimie 68, no. 10 (2017): 2261–64. http://dx.doi.org/10.37358/rc.17.10.5867.

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Recipient type products from energetic and chemical industry undergo a wide combined process of corrosion and ware, due to working environment. In order to put this products back in use, in a shorter period of time, welding reconditioning procedures are applied which mainly aim to restore the geometrical configuration but also the characteristics growth. Any welding technology applied, involves melting a filler material but also a part of the base material, mixing them, thereby obtaining the welded joint. The paper present the experimental results obtained in determining the optimal parameters

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Hafni, Hafni, and Rifqi Rifqi. "Effect of 70o and 85o Electrode Angles on Reverse Welding Techniques On Fusion Depth." Jurnal Teknik Mesin 12, no. 1 (2022): 61–65. http://dx.doi.org/10.21063/jtm.2022.v12.i1.61-64.

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Shielded Metal Arc Welding is a liquid welding process (fusion welding) that produces heat from an electric arc between the electrode and the workpiece. The depth of fusion formed is determined by the heat input, the electrode angle and the welding direction. The research was conducted in the Mechanical Engineering laboratory of the Padang Institute of Technology. The test material used is low carbon steel 10 mm thick, 100 mm long and 100 mm wide. Welding is carried out on the surface of the work material as many as 4 welding lines, each of which has a distance of 20 mm. Weld length 100 mm. Th

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Rybczyński, Andrzej, Agnieszka Wolska, Mariusz Wisełka, Jolanta Matusiak, and Tomasz Pfeifer. "Ignition of Welding Arc and UV Actinic Hazard Evaluation." Energies 12, no. 3 (2019): 512. http://dx.doi.org/10.3390/en12030512.

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Welding arcs emit strong ultraviolet (UV) radiation, which could pose serious health risks for skin and eyes. According to Directive 2006/25/EC, UV hazard evaluation has to be performed in the working environment. The measurement of welding arc ignition radiation is a difficult task. This article describes the effort made to determine actinic radiant exposure levels during welding arc ignition in the controlled environment of a welding laboratory. A new method of UV actinic hazard evaluation from welding arc ignition radiation using a CCD spectroradiometer combined with a photometer is present

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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 (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, w

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Selmi, Hamdi, Jean Brousseau, Gabriel Caron-Guillemette, Stéphane Goulet, Jacques Desjardins, and Claude Belzile. "Weldability of 316L Parts Produced by Metal Additive Manufacturing." Journal of Manufacturing and Materials Processing 7, no. 2 (2023): 71. http://dx.doi.org/10.3390/jmmp7020071.

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The processes of metal additive manufacturing (AM) are no longer confined to rapid prototyping applications and are seeing increasing use in many fields for the production of tools and finished products. The ability to design parts with practically zero waste, high precision, complex geometry, and on-demand fabrication are among the advantages of this manufacturing approach. One of the drawbacks of this technique is the productivity rate, as the parts are made layer by layer, which also increases the production cost. Moreover, even the working space is limited, especially for the powder bed fu

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Kukudzhanov, K. V. "Modeling of self-healing of microcracks in the process of longitudinal electroplastic rolling." Journal of Physics: Conference Series 2231, no. 1 (2022): 012022. http://dx.doi.org/10.1088/1742-6596/2231/1/012022.

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Abstract Multiscale model to describe the process of self-healing of microcracks in thin metal sheets during longitudinal electroplastic rolling is developed. The simultaneous treatment of a mechanical load and a pulsed high-energy electromagnetic field on the sheet is assumed. Finite element modeling has shown that under certain conditions microcracks and micropores can self-heal partially in the working zone. Impact of external pulsed high-energy electromagnetic field leads to welding of the shores of microcracks by molten metal in their tops, while the length and volume of cracks decrease.

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