基于分段法的压铸模具热机耦合分析

韩雄伟

doi:10.15980/j.tzzz.2013.02.028

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基于分段法的压铸模具热机耦合分析
Thermal-mechanical Coupled Analysis of Die Casting Die Base on Segmented Method
2013年33卷第2期页码：123-127
纸质出版日期： 2013 ，
DOI： 10.15980/j.tzzz.2013.02.028

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[1]韩雄伟.基于分段法的压铸模具热机耦合分析[J].特种铸造及有色合金,2013,33(02):123-127.

Han Xiongwei. Thermal-mechanical Coupled Analysis of Die Casting Die Base on Segmented Method[J]. Special Casting & Nonferrous Alloys, 2013,33(2):123-127.
[1]韩雄伟.基于分段法的压铸模具热机耦合分析[J].特种铸造及有色合金,2013,33(02):123-127. DOI： 10.15980/j.tzzz.2013.02.028.

Han Xiongwei. Thermal-mechanical Coupled Analysis of Die Casting Die Base on Segmented Method[J]. Special Casting & Nonferrous Alloys, 2013,33(2):123-127. DOI： 10.15980/j.tzzz.2013.02.028.

摘要

通过对某厂使用的压铸模具进行温度场的数值模拟试验

寻找出影响模具温度场变化的主要工艺参数

并把压铸过程分成压铸-凝固、开模-取件、喷涂-合模、合模-下次压铸4个阶段

进行热应力和机械应力的耦合数值模拟试验。选取不同截面上的不同区域进行应力变化分析

找出了在不同工艺参数下的应力变化规律

为模具寿命预测提供了参考。

Abstract

Although there are many factors influencing die-casting die failure

thermal stress and mechanical stress subjected in working process are main responsible for the failure.The temperature field of a die casting die from a factory was simulated to understand the key parameters influencing temperature field changes in mould.The die-casting process was divided into four stages:die casting-solidification

open mold-pick up

spraying-clamping

clamping-next die-casting

and coupling numerical simulation for thermal stress and mechanical stress was conducted.Through analyzing stress changes at different area from different cross-sections

stress change mechanism was presented at different processing parameters

providing a data reference to predicting service life of mould.