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Journal articles on the topic 'Mould cavity'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Mohd, A., C. Hindle, and W. A. Y. Yusoff. "Mould Filling and Pressure Distribution for Polymer Resins." Advanced Materials Research 264-265 (June 2011): 771–76. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.771.

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The application of simulation software packages for mould design and injection moulding process is becoming importance to optimizing the moulding quality and satisfy market needs. This paper presents the simulation of mould filling and packing for various polymer resin types. The filling and packing pressure phases for different type of polymer resins as well as the flow behaviour of molten resin in the mould cavity were investigated. Three common polymer resins which are amorphous and crystalline thermoplastics were used. Cylinder component cups with variation of wall thicknesses were designe

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2

He, Fang. "Grinding Affect the Service Life of Mould Research." Advanced Materials Research 850-851 (December 2013): 225–28. http://dx.doi.org/10.4028/www.scientific.net/amr.850-851.225.

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In the process of modern mould manufacturing, grinding work still account for 25% ~ 45% of the total manufacturing time mould. Mould manufacturing quality of the finished product is closely related to the precision of mould manufacturing, particularly with the mould cavity surface accuracy and surface roughness has a close relationship. In the manufacturing of mould to make grinding micro cracks and residual stress is reduced to a minimum, full attention, grinding process in order to improve the service life of mould. So research to improve grinding processing quality, improve the service life

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3

Md Yusof, Mursyidah, and Mohd Salman Abu Mansor. "Core and Cavity Generation Using Slicing and Boolean-Based Algorithm." Applied Mechanics and Materials 761 (May 2015): 175–79. http://dx.doi.org/10.4028/www.scientific.net/amm.761.175.

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In the fast moving technological world, few researchers are trying to formulate systems with automatic mould design processes in order to reduce mould design and development time and produce a consistent mould's quality. Currently, no commercial software are able to generate core and cavity without user intervention during the process. Thus, an algorithm is proposed in this research to automatically generate core and cavity of moulds by using slicing and Boolean-based approach. A 3D moulded part in a standard CAD file format is used as an input for the algorithm and the output is presented as

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4

Huang, Yong, Yao Huang, Qiong Wu, Xiao Ming Du, and Cheng Zhi Wang. "Numerical Simulation of Die Casting for Semi-Solid Aluminium Alloy and its Mould Research." Advanced Materials Research 201-203 (February 2011): 2717–20. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.2717.

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With consideration of the viscosity of semi-solid aluminum alloy slurry and the mold filling characteristics in die casting, the die-casting mould for semi-solid aluminum alloy has been designed and manufactured on the basis of the standard samples. The process of mold filling and solidification of semi-solid aluminum alloy in die casting was simulated by using ProCAST software. With combination of simulation results with die casting experimental data, the results indicate that the influence of heating system of the mould and cross section of ingate for the mould on flowing of semi-solid alumi

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5

Li, Wei Min. "AZ80 Magnesium Alloy Mold Temperature Field Analysis in Isothermal-Forging by the Boundary Element Method." Applied Mechanics and Materials 723 (January 2015): 919–23. http://dx.doi.org/10.4028/www.scientific.net/amm.723.919.

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Using the boundary element method, AZ80 magnesium alloy isothermal forging mould temperature field has be calculated. the outer wall of mold base temperature control at 360 °C, the model of cavity surface minimum temperature at 281.382 °C, the model of cavity on the surface of the highest temperature at 282.319 °C. Mold base outside the cavity wall and the model shows that the maximum temperature at 78.618 °C, the model of the maximum temperature difference between the cavity surface is 0.937 °C.

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6

Guo, Qiang. "Based on the Cimatron Plastic Shell Mold Design and Processing." Applied Mechanics and Materials 401-403 (September 2013): 73–76. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.73.

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The graduation design using CimatronE10 software shell model design, product modelling die, mold cavity, side pumping finish making mould numerical control programming and machining center operation. In mold cavity of the numerical control programming is described, the main analysis and technology essentials of each working procedure, flexible use of the secondary open coarse, increasing the auxiliary surface and other programming skills.

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7

Liu, Yu Mei. "Plastic Parts Die Design Analysis." Applied Mechanics and Materials 246-247 (December 2012): 956–59. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.956.

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The design of embedded a plastic mould design, make the mould can achieve the required by the plastic parts processing technology, and realizing automation production to increase production. Through to the analysis of the plastic parts for process, the general design of the mould structure, including sure cavity layout, sure pouring system, determine the parting surface and ejector institutions and pull the lever for design, cooling system, the design of the vents, in order to design a complete mold assembly drawing.

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8

Xu, Qin, Xing Wang, and Shiping Wu. "Hydraulic Study of Bubble Migration in Liquid Titanium Alloy Melt during Vertical Centrifugal Casting Process." High Temperature Materials and Processes 38, no. 2019 (2019): 309–16. http://dx.doi.org/10.1515/htmp-2018-0002.

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AbstractThe bubble migration in liquid titanium melt during vertical centrifugal casting process has been investigated by hydraulic experiments. Results show that the gas bubble in the simple cavity ultimately migrates like a line parallel to the wall in the opposite direction to the rotational casting mould. The deviation distance of the bubble in the simple geometry cavity tends to increase with the increment of the mould rotational speed during the migration process. And the gas bubble is much easier to migrate like a line when its initial position is nearer to the casting mould wall which

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9

Češková, Martina, and Petr Lenfeld. "Polymer Based Injection Mould Cavity Inserts: An Influence on Crystallization and Thermo-Mechanical Properties of Injection Moulded Parts." Materials Science Forum 994 (May 2020): 143–51. http://dx.doi.org/10.4028/www.scientific.net/msf.994.143.

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Injection moulding is a major used technology in mass production of high-quality plastic and composite parts. Once the initial costs have been paid the price per produced part is extremely low and part is then created up to million times. On the other hand, the product development process is time-consuming and costly due to preparation time. Therefore, the efficiency and similarity to real production are essential. Injection moulding into polymer injection mould cavity inserts appears to be an appropriate step in the product development process in particular concerning quickly developing addit

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10

Molnár, Dániel, and Jenő Dúl. "The Influence of the Solidification Process to the Dimensional Accuracy of Castings." Materials Science Forum 649 (May 2010): 431–36. http://dx.doi.org/10.4028/www.scientific.net/msf.649.431.

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The real system under consideration comprises of a solidifying casting with the casting mould, environment and other external influences. The process observed begins with the introduction of liquid metal to the channels of the runner system and filling of the mould cavity. This is connected with the contact of liquid metal with the atmosphere and also, with the walls of the mould. During the filling of the mould cavity heat transfer between the metal surface and the walls of the mould takes place (by radiation and conduction), which in practice can lead to mould cracking, and next to the forma

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11

Nováková, Iva, Martin Seidl, and Jaromír Moravec. "The Increase in Effectivity of Material Processing with Employment of Liquid CO₂ during Aluminium Die Casting." Key Engineering Materials 737 (June 2017): 64–69. http://dx.doi.org/10.4028/www.scientific.net/kem.737.64.

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The article is focused on monitoring the cooling effect of the liquid CO2. This unconventional cooling system was used as a supplement method added to the standard tempering system of the die casting mould particularly intended for aluminium alloy castings. Standard tempering system of die casting moulds enables preheating the mould to operating temperature before the particular production starts and then the tempering system regulates the temperature balance between the mould and the casting during individu al production cycles. Conventional cooling system is based on drilled or milled interc

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12

Milana, Edoardo, Mattia Bellotti, Benjamin Gorissen, Jun Qian, Michaël De Volder, and Dominiek Reynaerts. "Shaping Soft Robotic Microactuators by Wire Electrical Discharge Grinding." Micromachines 11, no. 7 (2020): 661. http://dx.doi.org/10.3390/mi11070661.

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Inflatable soft microactuators typically consist of an elastic material with an internal void that can be inflated to generate a deformation. A crucial feature of these actuators is the shape of ther inflatable void as it determines the bending motion. Due to fabrication limitations, low complex void geometries are the de facto standard, severely restricting attainable motions. This paper introduces wire electrical discharge grinding (WEDG) for shaping the inflatable void, increasing their complexity. This approach enables the creation of new deformation patterns and functionalities. The WEDG

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13

Pereira, Alejandro, Primo Hernández, Javier Martínez, José A. Pérez, and Thomas Mathia. "Study of Morphology Wear Model of Moulds from Alloys of Aluminium EN AW-6082 in Injection Process." Key Engineering Materials 554-557 (June 2013): 844–49. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.844.

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The main objective of this research is study the wear of a mould, made in easy machining material; aluminium EN AW-6082 T4 and the surface characterization of mould cavity, used in a polymeric manufacturing process, after several injection cycles. To evaluate the effectiveness of this materials in the plastic injection process, a test part with different thicknesses and shapes was designed and some inserts of aluminium were made. In the way of plastic material, a 30 % fiberglass reinforced polyamide PA6 has been employed in the experimental procedure. A reusable injection mould was used and su

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14

Lin, Jui Cheng, and King Sun Lee. "Molding Analysis of Multi-Cavity Aspheric Lens and Mold Designing." Advanced Materials Research 83-86 (December 2009): 77–87. http://dx.doi.org/10.4028/www.scientific.net/amr.83-86.77.

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The key of qualities of optical lens created by injection molding are geometric errors and distribution of residual stress. This study analyses a mobile phone camera lens with aspheric optical lens created by one mold and 16 cavities. Mold flow analysis was used to simulate geometric shapes of different gates and design cooling systems to control mold temperatures. Mold temperature was controlled during the actual injection process and simulation results were used as the basis for mold design. The effects of cold-wall-mold on lens residual stress are discussed. The experiment result showed tha

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15

Dang, Xinyuan, Shuichi Hokoi, Yonghui Li, Changchang Xia, and Ma Yan. "Evaluation of mould growth risks due to air leakage through air cavity of the building walls." MATEC Web of Conferences 282 (2019): 02060. http://dx.doi.org/10.1051/matecconf/201928202060.

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Mould growth causes damage and poses high risk to a large number of existing buildings and their users. Air leakage through air cavity of the building walls, such as gaps between walls and some pipes penetrating the walls, produces obvious hygrothermal exchange, altering the temperature and humidity distribution of the walls. It would promote condensation and mould growth. Air cavity are common on the walls of existing buildings. In order to make a quantitative analysis on the mould growth risks due to air leakage through air cavity, an office room in an existing building in Nanjing, China was

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16

Wang, Bin, Jing Li, Chang Wang, and Xiu Xin Hu. "Applications on Nanocomposite Coating Technology in Plastic Injection Mould Cavity Surface Treatment." Advanced Materials Research 418-420 (December 2011): 812–17. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.812.

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Nano surface engineering is a protection technology using nanometer material and nanometer technology, pointing at failure forms, characteristics and mechanism, comprehensively using a variety of traditional surface engineering technology. Nanocomposite coating technology which develops on the basis of the traditional composite coating technology was briefly introduced in the article. The research of application nanocomposite coating technology in plastic injection mould cavity surface treatment has just started. The nanocomposite coating technology was compared with the ordinary nickel electr

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17

Cai, Yu Jun, Tie Li Qi, and Shu Lai Chen. "High Efficiency Strategy in Mould Cavity Roughing Oriented Machining Features." Advanced Materials Research 291-294 (July 2011): 2979–82. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.2979.

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A highly efficient rough machining strategy for mould cavity oriented machining features is proposed based on the traditional CAM systems. The rough machining strategies for the mould cavity can be calssified as drilling, reaming, slot cutting, lateral cutting and clearance machining according to the extated cutting layers which is generated by the traditional constant scallop toolpath. And the machining methods are differ accodring to corresponding machining features. The strategy proposed in this paper has an great value for the high efficiency mould cavity machining, it can not only ensure

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18

Yu, Huan, Bo Wen Xiong, Qing Song Yan, Zhi Feng Xu, Chang Chun Cai, and Guo Feng Liu. "Effects of Gating System on the Flow Behaviors during Vacuum Counter Pressure Casting Thin Wall Aluminum Alloy." Advanced Materials Research 129-131 (August 2010): 189–93. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.189.

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The flow behaviors of molten Al alloy in sand mould cavity with varied gating system were simulated under vacuum counter-pressure casting and the ingate velocity was predicted using a software package. At same process conditions, the flow behaviors were investigated using electrode contact method. The comparison between the simulated results and the investigated results shows that a good agreement is achieved. The ingate flow velocity exceeding critical velocity and large velocity deviation are detected during filling mould withⅠtypes gating system, resulting in turbulent flow behavior. Wherea

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19

Xu, Qin, Xing Wang, and Shiping Wu. "Bubble evolution in the titanium alloy melt under vertical centrifugal field." Engineering review 40, no. 2 (2020): 16–23. http://dx.doi.org/10.30765/er.40.2.03.

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The bubble evolution in the liquid titanium melt under vertical centrifugal field has been studied by the hydraulic experiment simulation. The bubble migration process in the simple and complex cavities, the bubble morphology, bubble dimensional size diversification under different mould rotational speed has been investigated. The results show that the mould wall has a blocking effect on the bubble migration. The bubble migration in the simple cavity deviates from the line between the bubble initial position and the rotation shaft of the casting mould. Also, the bubbles in the complex cavity g

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20

Trudel-Boucher, David, Bo Fisa, Johanne Denault, and Patrick Gagnon. "Thermoforming Complex Parts from Unconsolidated and Consolidated Polypropylene/Glass Fibre Fabrics." Polymers and Polymer Composites 13, no. 6 (2005): 543–58. http://dx.doi.org/10.1177/096739110501300601.

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Thermoforming of unconsolidated and consolidated polypropylene/glass fibre fabrics was studied for two mould geometries, i.e. a square mould and a mould with three studs. The principal objective of this study was to evaluate the feasibility of direct thermoforming of unconsolidated fabrics in complex moulds, since this process offers the potential of reducing the cost of the raw material by eliminating the separate consolidation step performed prior to moulding. In this work, the unconsolidated and consolidated fabrics plies were heated in a convection oven and then quickly transferred to a pr

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21

Zhao, Hai Dong, and Itsuo Ohnaka. "Modeling of Mold Filling Process of Al Casting and Validation with X-Ray In-Situ Observation." Materials Science Forum 532-533 (December 2006): 841–44. http://dx.doi.org/10.4028/www.scientific.net/msf.532-533.841.

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To describe the shape and location of free surfaces in the mold filling simulation, parameters including volume filled ratio, surface dimensionless distance, and surface filled ratio for the DFDM (Direct Finite Difference Method) elements were proposed. A model of mold filling process was established, considering the mass, momentum and heat transfer in the vicinity of free surface. It had been applied to an experimental Al casting. In-situ observation and record of actual mold filling process of the casting with special X-ray apparatus were carried out, and were used to validate the simulation

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22

Yanev, A. S., Gustavo R. Dias, and António M. Cunha. "Visualization of Injection Moulding Process." Materials Science Forum 587-588 (June 2008): 716–20. http://dx.doi.org/10.4028/www.scientific.net/msf.587-588.716.

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A special tool-transparent mould designed to visualize the melt flow inside the cavity is used in this research. The aim of the work is to assess the polymer melt behavior under different processing conditions-close to industrial, in conventional and two materials non-conventional injection moulding techniques. The mould is designed with two injection locations and has possibility to change the geometry of the cavity in order to investigate the melt behavior in differently shaped cavities. Visual access in the mould is allowed by the sapphire windows, surrounding the cavity. For image acquisit

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23

Liu, Zhan Jun. "The Manufacturing Technology Research of Composite Resin Transfer Molding." Advanced Materials Research 912-914 (April 2014): 419–22. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.419.

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The main requirements of preparation of composite materials in aerospace industry are affordable , highly automated and good quality control.To reduce the mold cost and shorten the production cycle, the aviation industry is focusing on weaving technology,advanced spread with technology, autoclave technology, injection process, advanced curing process;,all quality concept and thermoplastic process. The main principle of RTM process is laying reinforced material form in the cavity, in accordance with the requirements of performance and structure, injection equipment will be used by special resin

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24

Zhou, Lin Zhen, and Jie Tao. "NX-Based Cell Phone Injection Mould Design." Advanced Materials Research 459 (January 2012): 402–5. http://dx.doi.org/10.4028/www.scientific.net/amr.459.402.

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In cell phone injection mould design process, abundant knowledge is reused. To improve product design efficiency, a NX-based cell phone injection mould was proposed in this paper. The key techniques such as product initialization, setting mould coordinate system, defining blank of mould core, and layout of multi-cavity mould are described in detail. As choosing suitable parting surface is very important for injection mould design, the paper explained the choosing method and process of parting surface very clearly, which effectively cut short the period of product design

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25

Shen, Hua, Yu Jun Cai, and Xin Pan. "Fractal Study on Blank Residue of Mould Cavity." Advanced Materials Research 418-420 (December 2011): 1734–38. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1734.

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A mathematical model of fractal interpolation surface is introuduced in this paper. A calculation to fractal dimension of the messy point data is proposed and used to get appropriate vertical scale factor to construct precise blank residue model. Fractal dimensions of different fractal interpolation surfaces with different vertical scale factor are different. The relationship between vertical scale factor and fractal dimension is obtained through calculating fractal dimensions of tested surfaces which are created by fractal interpolation with different vertical scale factor.

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26

Mandolini, Marco, Agnese Brunzini, Michele Germani, Steve Manieri, Alida Mazzoli, and Mario Pagnoni. "Selective laser sintered mould for orbital cavity reconstruction." Rapid Prototyping Journal 25, no. 1 (2019): 95–103. http://dx.doi.org/10.1108/rpj-05-2017-0098.

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PurposeOrbital fractures are the most commonly encountered midfacial fractures, and usually, the fracture involves the floor and/or the medial wall of the orbit. This paper aims to present an innovative approach for primary and secondary reconstructions of fractured orbital walls through the use of computer-assisted techniques and additive manufacturing.Design/methodology/approachFirst, through the 3D anatomical modelling, the geometry of the implant is shaped to fill the orbital defect and recover the facial symmetry. Subsequently, starting from the modelled implant, a customised mould is des

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27

Nadolski, M., Z. Konopka, M. Łągiewka, and A. Zyska. "The Influence of the Method of Mould Filling on the Quality of Castings Made of EN AC-44000 or EN AC-46200 Alloy." Archives of Foundry Engineering 14, no. 4 (2014): 73–76. http://dx.doi.org/10.2478/afe-2014-0089.

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Abstract The performed examinations concerning the process of filling the plaster ceramic moulds with aluminium alloys allowed to assess the influence of various methods of introducing the metal into the mould cavity on the macro- and microstructure of the obtained experimental castings. The comparison was performed for castings with graded wall thickness made either of EN AC-44000 alloy or of EN AC-46000 alloy, produced either by gravity casting, or by gravity casting with negative pressure generated around the mould (according to the Vacumetal technology), or by counter-gravity casting. It w

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28

Ren, Yi Lei, and Hong Qi Lin. "The Effective Measures of Preventing Collapse Angle Problem in Polishing Plastic Mould." Advanced Materials Research 538-541 (June 2012): 1720–23. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1720.

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Plastic mold polished, in the mold cavity parting collapsed throwing angle appear, which seriously affect the dimensional accuracy and surface quality of the plastic parts, this article proposed two effective preventive measures: (1) cutting the model which having a same size as plastic model of the cavity at the parting surface, sticking the model and cavity parting with 502 glue together, within the required type of alignment, and then thrown together, polished finish will be a model to out; (2) in the plastic model cavity machining process, type in the mold cavity surface set aside allowanc

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29

Zhou, Chun Ying. "The Design of the 3D Model to Create Injection Mold Cavity Based on Pro/E." Advanced Materials Research 706-708 (June 2013): 1614–16. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.1614.

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By utilizing Part Design to draw the 3D feature model of a plastic mould, some different ideas and methods can be used. If the features of the later Design Part are considered in term of 3D model design, it can largely shorten the period of mould design and improved the work efficiency. In this paper, the 3D model designing for the injection mould cavity was researched by Pro/E .

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Singh, Rupinder, and T. Lal. "Effect of Moulding Sand Properties on Cost Effective Hybrid Rapid Casting Solution for Zinc Alloy." Advanced Materials Research 264-265 (June 2011): 1637–42. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.1637.

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The purpose of the present experimental investigations is to study the effect of moulding sand properties on reducing the shell wall thickness of mould cavity for cost effective, hybrid rapid casting solution of zinc alloy. Starting from the identification of component/benchmark, technological prototypes were produced, with three different moulding sands (dry, green and molasses), at different shell wall thickness of mould cavity using hybrid rapid prototyping technique (combination of three dimensional printing and conventional sand casting). Measurements on the coordinate measuring machine h

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31

Liu, Xi Fen, Yi Hua Hu, and Wei Jian Huang. "Optimum Design of Plastic Injection Mould Gate Based on MoldFlow." Advanced Materials Research 239-242 (May 2011): 2541–44. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.2541.

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In view of the importance of proper gate location and size in mould design process, with the basic analog theory for simulating the filling process of plastic melts in the cavity of injection moulds, injection moulding CAE technology was proposed for the optimum design of gate location and size. Based on Moldflow software, the analysis process of the best gate location and size was stated. The gate location and size and injection moulding technical parameters were optimized in this paper by example. The optimal rectangular gate dimension was 5mm×2.5mm, filling state was fine, filling time was

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Kmita, A., D. Drożyński, J. Mocek, A. Roczniak, J. Zych, and M. Holtzer. "Gas Evolution Rates of Graphite Protective Coatings in Dependence on the Applied Solvent and Kind of Atmosphere." Archives of Metallurgy and Materials 61, no. 4 (2016): 2129–34. http://dx.doi.org/10.1515/amm-2016-0284.

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Abstract The results concerning emission of gases from two commercial graphite protective coatings for moulds and cores (water and alcoholic) are given in the hereby paper. Investigations were performed in two systems. One of the systems was corresponding to conditions occurring inside the mould cavity immediately after its pouring with liquid metal (Method 1), while the second was simulating conditions deep inside the mould at a certain distance from the casting (Method 2). Investigations were carried out in the CO2 atmosphere and in the air. The water protective coating generated 1.5 to 3 ti

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Selvaraj, J., M. Thenarasu, S. Aravind, and P. Ashok. "Waste Heat Recovery from Castings and Scrap Preheating by Recovered Heat Using an Intermediate Heat Transfer Medium." Applied Mechanics and Materials 813-814 (November 2015): 776–81. http://dx.doi.org/10.4028/www.scientific.net/amm.813-814.776.

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Energy conservation is a major topic of concern since our energy sources are exhausting exponentially. This paper focuses on waste heat recovery using which scrap preheating is done in metal castings using sand molds. During solidification of molten metal, most of the heat is lost to the sand. The proposal is to prepare the sand mould with aluminium shots surrounding the mold cavity. These shots absorb some of the heat from the solidifying metal in the mold cavity. The heated shots are separated from the mold and they are allowed to transfer their heat energy to the metal scrap by conduction.

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Wang, Li Hua, Xiang Liu, and Ya Yu Huang. "Parameter Optimization of the Large-Scale Semi-Opened Copper Mould Die-Casting Based on Analysis of Temperature and Stress Fields." Applied Mechanics and Materials 278-280 (January 2013): 464–68. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.464.

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When using Large-scale semi-opened copper mould die-casting machine, it can reduce the shrinkage cavity and porosity, improve the surface roughness and the mechanical properties of the copper mould. But its process parameters are selected by experience, which result in unstable quality of the anode plate copper mould. In this paper, the temperature and stress fields of the copper mould were simulated using finite element method. And the effects of the initial temperature on the copper mould quality were studied further. The preliminary optimization scheme of the die-casting initial temperature

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35

Lu, W. L., Y. Wang, and Jin Tao Hai. "The Effects of Free Space in Mould Cavity on Sandglass Extrusion." Materials Science Forum 475-479 (January 2005): 2999–3002. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.2999.

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Sandglass extrusion is an ultrafine grain size method. Due to the repetitive and multiple extrusions, large strain will be accumulated and ultafine grain size can be obtained. There are some factors that can affect the experimental result of sandglass extrusion. Among these factors, free space in mould cavity is very important, which can affect the forming of the fold during the extrusion. In this paper, the effects of free space in mould cavity on sandglass extrusion have been discussed and theory analysis and experimental results have been reported.

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Liu, Geng Wu. "Applied Research on Contractive Rate Inspecting Testing Mould of Pressure Casting Alloy." Advanced Materials Research 287-290 (July 2011): 632–35. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.632.

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As we know , the materials will swell and contract when it is heated or cooled . A kind of method for mastery the real contractive rate of alloy was bring forward through researching the contractive rate of alloy. Using the method a inspecting testing mould of alloy was designed , and the real contractive rate was mastered by the mould . And this provides the reliable contract date for the design of mould cavity dimension , and reduces the work of mould repair , and also save a lot of money and labor.

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Liu, Geng Wu. "Study on Contractive Rate Inspecting Testing Mould of Thermoplastic." Advanced Materials Research 189-193 (February 2011): 193–96. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.193.

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As we know , the materials will swell and contract when it is heated or cooled . A kind of method for mastery the real contractive rate of thermoplastic was bring forward through researching the contractive rate of thermoplastic . Using the method a inspecting testing mould of thermoplastic was designed , and the real contractive rate was masteried by the mould . And this provides the reliable contract date for the design of mould cavity dimension , and reduces the work of mould repair , and also save a lot of money and labor.

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Głownia, J., D. Koshal, R. Skoczylas, and S. Sobula. "Simulation of Solidification Conditions in High Quality Castings for Mining Industry." Archives of Metallurgy and Materials 58, no. 3 (2013): 791–94. http://dx.doi.org/10.2478/amm-2013-0073.

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Abstract To obtain a right casting methoding of a yoke used in mining industry, a computer simulation of filling of mould cavity as well as casting solidification has been applied. Analysis of the casting solidification showed, that an initial casting methoding, based on common foundry practice, had to be changed. An initial bottom gating system was changed into a side-bottom one, what allowed smooth filling of mould cavity. Modified risering system enabled proper feeding of the casting. Ensuring high quality casting enable to substitute parts manufactured by forging

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Li, Hong Lin, and Zhi Xin Jia. "The Mold Design for the Mouse Bottom Cover Based on EMX Software." Applied Mechanics and Materials 201-202 (October 2012): 590–93. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.590.

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Injection molding is a major manufacturing method for the fabrication of plastic parts for multi-industrial aspects. The mold design technology experienced the development process of manual draft, 2D CAD design to 3D CAD design. In this paper, the main functions of EMX are introduced firstly. Then the design procedures are presented for molding parts by adopting Mold Cavity functional mould in Pro/E software and the mold base by using EMX software. At last, a mold for the mouse bottom cover is designed using the given method. The result shows that integrated 3D design of mold has significant a

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Umasankar, V., and SANTHANA JAGADEESAN. "Cycle time reduction in multi cavity injection mould through mould flow analysis and runner modification." International Journal of Productivity and Quality Management 1, no. 1 (2021): 1. http://dx.doi.org/10.1504/ijpqm.2021.10037913.

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Lin, Jui Chang, and King Sun Lee. "The Study of Flowing Balance with Multi-Cavity Die and Non-Uniform Thickness." Materials Science Forum 628-629 (August 2009): 483–88. http://dx.doi.org/10.4028/www.scientific.net/msf.628-629.483.

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This study aimed to create a multi-cavity and non-uniform thickness die casting for flowing balance. The die casting processes involved a hot-chamber die casting experiment and computer aided simulation to explore the flowing condition of the molten metal in the metal molding process. Computer-aided mould flow analysis software FLOW 3D V9.2 was applied to simulate the filling stage of zinc alloy in the mould cavities. The design parameters of the mould included four variables relating to the gate: width, position, shape, and thickness of cross-section. Analysis results shows that the primary g

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Monkova, Katarina, and Slavomir Hric. "Optimization of Injection Moulding Process from the View of Cavity Filling Time and Product Cooling Time." Applied Mechanics and Materials 621 (August 2014): 208–13. http://dx.doi.org/10.4028/www.scientific.net/amm.621.208.

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The article deals with the mould cooling system design. The goal of design presented in the article was to propose the mould form so to be achieved the shortest time for both mould filling and product cooling. Studied product is intended to serve as a stopper in the automotive spotlight. After filling of mould cavity, the melt has to cool at 100 ° C, only then it is possible to accede to the next phase, which is final pressure. So the cooling and filling time is directly proportional to the reduction of production cost. 3D model of the mould was created in Autodesk Inventor Proffesional softwa

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Pacyniak, T., and R. Kaczorowski. "The Influence of Ingate Size on the Lost Foam Casting Process." Archives of Foundry Engineering 12, no. 2 (2012): 171–74. http://dx.doi.org/10.2478/v10266-012-0058-1.

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The Influence of Ingate Size on the Lost Foam Casting Process The article presents analysis of the influence of ingate size on the Lost Foam casting process. In particular, analysis of simulation tests has been carried out to determine the ingate size influence on the rate of filling of the mould cavity, pressure in the gas gap and size of the gas gap. A specially prepared mathematical model of the process and an original calculation algorithm were used in simulation tests of full-mould casting. The tests have indicated that the increase of the ingate size results in the increase of filling ra

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Satin, Lukáš, and Jozef Bílik. "Impact of Viscosity on Filling the Injection Mould Cavity." Research Papers Faculty of Materials Science and Technology Slovak University of Technology 24, no. 38 (2016): 113–21. http://dx.doi.org/10.1515/rput-2016-0046.

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Abstract The aim of this paper is to look closer at the rheological properties of plastics and their impact on technology in the plastics processing industry. The paper focuses on the influence of viscosity of the material on filling the mould cavity. Four materials were tested with the settings of process parameters with different viscosity. Using simulation software of Moldex3D, we can see the effect of change in viscosity in the material to be filled.

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Fu, M. W., J. Y. H. Fuh, and A. Y. C. Nee. "Core and cavity generation method in injection mould design." International Journal of Production Research 39, no. 1 (2001): 121–38. http://dx.doi.org/10.1080/00207540010002379.

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Singh, Rupinder, and Rupinder Singh. "Effect of Work Piece Dimensions on Cost Effective Hybrid Rapid Casting Solution for Aluminium Alloy." Advanced Materials Research 264-265 (June 2011): 397–402. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.397.

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The purpose of the present experimental investigations is to study the effect of work piece dimensions on reducing the shell wall thickness of mould cavity for cost effective, hybrid rapid casting solution of aluminum alloy. Starting from the identification of component/benchmark, technological prototypes with three different work piece dimensions (volume/ weight) were produced, at different shell wall thickness of mould cavity using hybrid rapid prototyping technique (combination of three dimensional printing and conventional sand casting). Measurements on the coordinate measuring machine hel

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Paško, Ján, and Štefan Gašpár. "Progressive Trends of Die Casting - Vacuum Treatment of Casting Mold." Key Engineering Materials 669 (October 2015): 103–9. http://dx.doi.org/10.4028/www.scientific.net/kem.669.103.

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In these days in foundry branch there is a rapid development of sectors of special casting technology with the aim to increase the quality and the efficiency of pressure casting production. Internal homogeneity of pressure casting, characterized by the extent of porosity can be affected by the setup of technological parameters of pressure casting and last but not least by vacuuming the moulds, that means to exhaust air and gases from the mould cavity. Contribution is specifically aimed on the analysing the impact of degassing pressure moulds on the porosity of pressure casting from EN AC43400

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Pastirčák, R., D. Urgela, and E. Krivoš. "Production of Castings by Patternless Process." Archives of Foundry Engineering 12, no. 1 (2012): 87–92. http://dx.doi.org/10.2478/v10266-012-0017-x.

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Production of Castings by Patternless ProcessThis paper deals with production of safety inlay for steam locomotive valve by the Patternless Process method. For the moulds creation was used moulding mixtures of II. generation, whereas binder was used a water glass. CNC miller was used for creation of mould cavity. Core was created also by milling into block made of moulding compound. In this article will be presented also making of 3D model, setting of milling tool paths and parameters for milling.

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Mishra, Brijesh, Gaurav Janavar, Yashodhara Pradeep, Arun K. Singh, Vijay Kumar, and Divya N. Upadhyay. "Indigenous technique of fabricating vaginal mould for vaginal reconstruction and uterine drainage in McIndoe vaginoplasty using 10 ml syringe." Indian Journal of Plastic Surgery 49, no. 01 (2016): 76–80. http://dx.doi.org/10.4103/0970-0358.182230.

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ABSTRACTAbsence of vagina poses multitude of physical and psychosocial problems in woman's life. 10% of Mayer- Rokitansky-üster-Hauser (MRKH) syndrome patients with high vaginal septum and vaginal atreisa has additional issue of draining uterine cavity. MC Indoe vaginoplasty is universally acceptable and widely practiced procedure for neocolposis reconstruction. Simultaneous reconstruction of vagina with simultaneous continued uterine drainage presents surgical challenge. We offer a simple solution of creating a vaginal mould using a 10 ml disposable syringe, which enables graft application of

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Anca, Denisa, Iuliana Stan, Mihai Chisamera, Iulian Riposan, and Stelian Stan. "Control of the Mg-Treated Iron Casting Skin Formation by S-Diffusion Blocking at the Metal–Mould Interface." Coatings 10, no. 7 (2020): 680. http://dx.doi.org/10.3390/coatings10070680.

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Having established that sulphur presence in the mould materials appears to have an important contribution in graphite degeneration at least in the casting surface layer, a research program is undertaken to explore the possible beneficial effect of sulphur diffusion blocking at the metal–mould interface. Test samples, with and without a thin steel sheet (up to 3 mm thickness) application on the inner surface of the mould cavity, before iron melt pouring, are considered for structure analysis. A higher nodulizing potential (0.048% Mgres, 0.015% Ceres, and 0.006% Lares) decreases the occurrence o

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