Simulation of die filling for the wax injection process: Part II. Numerical simulation

As investment castings grow in size and complexity, control of wax pattern dimensions becomes increasingly important and difficult. Conventionally, mold design and dimensions are re-worked by trial-and-error procedures until casting dimensions are produced within acceptable dimensional tolerances, increasing the cost of the castings.Nowadays, numerical simulation is an efficient tool for mold design. However, one of the critical difficulties in using computer models for the simulation of wax injection process is the lack of material properties of the wax. Material property measurements were conducted in this study that can be used as input in Moldflow. Then, 3D numerical simulation could be applied in analysis with mold design of thin-walled wax pattern, with high dependability. Simulation results of filling time and the location of the air traps were analyzed. Consequently, best gate location and reasonable gate system were determined. The paper highlighted the effectiveness of simulation in filling optimization and deformation of wax pattern.

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Numerical Simulation of Mold Filling Process for Wax Pattern of the Impeller in Investment Casting

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.80-81.965 ◽

2011 ◽

Vol 80-81 ◽

pp. 965-968 ◽

Cited By ~ 3

Author(s):

Jie Zhang ◽

Hai Wei Ye ◽

Kang Wen Li ◽

Gang Wang ◽

Feng Li

Keyword(s):

Numerical Simulation ◽

Mathematical Model ◽

Rheological Behavior ◽

Investment Casting ◽

Model Design ◽

Filling Process ◽

Design Quality ◽

Injection Process ◽

Wax Pattern ◽

Wax Injection

This paper try to analyze the rheological behavior during the wax injection, and build a mathematical model to simulate the wax injection process. By using Moldflow, simulate a wax pattern with different ingate configurations to optimize the injection modeling product design. This study helps to improve the model design quality, shorten the development cycles, lower down the overall cost and enhanced competition in market.

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Simulation of die filling for the wax injection process: Part I. Models for material behavior

Metallurgical and Materials Transactions B ◽

10.1007/s11663-004-0015-7 ◽

2004 ◽

Vol 35 (4) ◽

pp. 755-759 ◽

Cited By ~ 5

Author(s):

J. -C. Gebelin ◽

M. R. Jolly ◽

A. M. Cendrowicz ◽

S. Blackburn ◽

J. Cirre

Keyword(s):

Material Behavior ◽

Injection Process ◽

Die Filling ◽

Wax Injection

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Numerical Simulation of the Wax Injection Process for Investment Casting

Materials and Manufacturing Processes ◽

10.1080/10426914.2012.746788 ◽

2013 ◽

Vol 28 (2) ◽

pp. 220-224 ◽

Cited By ~ 10

Author(s):

Donghong Wang ◽

Bo He ◽

Fei Li ◽

Baode Sun

Keyword(s):

Numerical Simulation ◽

Investment Casting ◽

Injection Process ◽

Wax Injection

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Numerical Simulation and Engineering Application of Coalbed Water Injection

Mathematical Problems in Engineering ◽

10.1155/2019/6309160 ◽

2019 ◽

Vol 2019 ◽

pp. 1-12 ◽

Cited By ~ 5

Author(s):

Yijie Shi ◽

Pengfei Wang ◽

Ronghua Liu ◽

Xuanhao Tan ◽

Wen Zhang

Keyword(s):

Numerical Simulation ◽

Process Parameters ◽

Water Injection ◽

Engineering Application ◽

Working Environment ◽

Engineering Practice ◽

Characteristic Parameters ◽

Injection Process ◽

Working Face ◽

Dust Reduction

Coalbed water injection is the most basic and effective dust-proof technology in the coal mining face. To understand the influence of coalbed water injection process parameters and coalbed characteristic parameters on coal wetting radius, this paper uses Fluent computational fluid dynamics software to systematically study the seepage process of coalbed water injection under different process parameters and coalbed characteristic parameters, calculation results of which are applied to engineering practice. The results show that the numerical simulation can help to predict the wetness range of coalbed water injection, and the results can provide guidance for the onsite design of coalbed water injection process parameters. The effect of dust reduction applied to onsite coalbed water injection is significant, with the average dust reduction rates during coal cutting and support moving being 67.85% and 46.07%, respectively, which effectively reduces the dust concentration on the working face and improves the working environment.

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Process Optimization of Mid-Density Tungsten Alloy for Injection Process in Metal Injection Molding Based on Numerical Simulation

Materials Science Forum ◽

10.4028/www.scientific.net/msf.628-629.599 ◽

2009 ◽

Vol 628-629 ◽

pp. 599-604

Author(s):

Zhen Xing Zheng ◽

Yuan Biao Wu ◽

Wei Xia ◽

Wei Ping Chen

Keyword(s):

Numerical Simulation ◽

Design Method ◽

Pairwise Interaction ◽

Fractional Factorial ◽

Metal Injection Molding ◽

Tungsten Alloy ◽

Process Conditions ◽

Single Factor ◽

Injection Process ◽

Moulding Machine

In this paper, based on the CAE technology for MIM and fractional factorial design method, the simulation for the filling process was executed in different process conditions by the Moldflow software. And then it was realized that the extent of the effects of the single factor and pairwise interaction between the process parameters on quality of green parts were forecasted. According to that, the relationships of pressure, velocity and time and their optimal combination were researched by the experiments using a FC-80 plastic-Injection-Moulding machine. The experimental results suggested that the pressure, velocity and time have a obvious pairwise interaction which can have more effect on the product than single factor. It was shown that there was a good consistency between the numerical simulation and experiment. The CAE technique and the experiments are combined to optimize the process conditions and improve the part quality automatically by using smaller number of experiments.

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Virtual Product Development and Reliability Design of Camera Cover

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.460-461.40 ◽

2011 ◽

Vol 460-461 ◽

pp. 40-43

Author(s):

Wei Hua Kuang ◽

Li Si Chen

Keyword(s):

Numerical Simulation ◽

Optimal Design ◽

Injection Molding ◽

Product Development ◽

Reliability Design ◽

Gate Location ◽

Injection Process ◽

Cad Cam ◽

Virtual Product Development ◽

Virtual Product

The paper finished the design of injection molding by UG MoldWizard module, and realized numerical simulation and analysis of injection process by MoldFlow software. Best gate location was obtained. Fill time was deeply studied. Though the mold designing process, it completed the CAD/CAM/CAE integration of the injection molding, and achieved the optimal design of the mold. NC machining of the mold core was programmed by UG NX software. CAD/CAM/CAE greatly improved the development efficient of the mold.

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