Wax mold injection process parameter determination method based on injection molding numerical simulation

A technology of numerical simulation and parameter determination, applied in special data processing applications, computer-aided design, design optimization/simulation, etc. Reliable effect

Pending Publication Date: 2021-07-23
JIASHAN SINHAI PRECISION CASTING
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Problems solved by technology

[0003] The invention provides a method for determining wax injection process parameters based on numerical simulation of injection molding, which uses a method combining numerical simulation and orthogonal experimental analysis to solve the problem of traditional wax injection molding experience combined with trial and error to explore wax injection process parameters , and effectively reduce the problems of large warpage and sink marks in the production of wax patterns

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  • Wax mold injection process parameter determination method based on injection molding numerical simulation
  • Wax mold injection process parameter determination method based on injection molding numerical simulation
  • Wax mold injection process parameter determination method based on injection molding numerical simulation

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Embodiment 1

[0021] Step 1: The overall size of the selected wax model is: length 168.2mm, width 63mm, height 23mm, wall thickness 7mm. Set the parameters of the wax injection machine in the Moldflow software: set the maximum injection rate to 300cm3 / s, the maximum injection pressure to 7Mpa, the maximum clamping force to 100 metric tons, the mold material to choose Aluminum Al, the mold temperature to 23°C, and the ambient temperature The mold-melt thermal conductivity coefficient is 22°C, the filling coefficient is 2500, the pressure holding coefficient is 1000, the separation coefficient is 500, and the injection wax material is KC4017B medium temperature wax material.

[0022] Step 2: Establish a finite element model in the Moldflow numerical simulation software according to the size and structure of the actual wax model, and divide the three-dimensional finite element model grid by tetrahedral mesh.

[0023] Step 3: In the Moldflow numerical simulation software, the gate analysis of t...

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Abstract

The invention discloses a wax mold injection process parameter determination method based on injection molding numerical simulation. The wax mold injection process parameter determination method comprises the following steps: determining actual wax injection related conditions; establishing a finite element model, and dividing the finite element model by adopting a tetrahedral mesh; analyzing sprue matching performance through numerical simulation software Moldflow, and determining an optimal sprue; according to actual conditions, selecting a plurality of wax injection process parameters as test factors, determining the parameter range of the test factors, and taking buckling deformation, a volume shrinkage rate and sink marks as judgment results; According to the method, a Box-Behnken method is adopted in Design Expert to carry out experimental scheme design, and numerical simulation is carried out in Moldflow according to an experimental design scheme; data analysis is conducted by utilizing Design Expert to obtain an optimal wax injection process parameter; and a large amount of resources are saved, production efficiency is improved, and the phenomena of buckling deformation and volume shrinkage of the wax mold are effectively reduced, so the production quality of the wax mold is improved.

Description

technical field [0001] The invention relates to the technical field of numerical simulation of wax mold injection molding in precision casting, in particular to a method for determining process parameters of wax mold injection based on numerical simulation of injection molding. Background technique [0002] Investment casting is a kind of precision casting. The castings produced by this method have the advantages of high dimensional accuracy, high surface finish and less machining. It is a net shape method and is widely used in the manufacture of aerospace precision parts. . Among them, wax mold injection molding is a key link in investment casting. The quality of the wax mold directly affects the quality of the final casting. Most factories use trial and error and experience to set the parameters of the wax injection process in actual production, resulting in A lot of time and wax materials are wasted, and the dimensional accuracy of the wax mold products made cannot reach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F119/18
CPCG06F30/20G06F2119/18
Inventor 姜淼汪东红余童凌李石保李佳丁
Owner JIASHAN SINHAI PRECISION CASTING
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