基于数值模拟的发动机前盖压铸模开发

黄美莲; 罗柏奎; 陈木荣; 何宇云

doi:10.15980/j.tzzz.2018.11.016

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基于数值模拟的发动机前盖压铸模开发
Die Design of Die Casting Engine Chain Cover Based on Numerical Simulation
2018年38卷第11期页码：1222-1225
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.11.016

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[1]黄美莲,罗柏奎,陈木荣,何宇云.基于数值模拟的发动机前盖压铸模开发[J].特种铸造及有色合金,2018,38(11):1222-1225.

Huang Meilian, Luo Baikui, Chen Murong, et al. Die Design of Die Casting Engine Chain Cover Based on Numerical Simulation[J]. Special Casting & Nonferrous Alloys, 2018,38(11):1222-1225.
[1]黄美莲,罗柏奎,陈木荣,何宇云.基于数值模拟的发动机前盖压铸模开发[J].特种铸造及有色合金,2018,38(11):1222-1225. DOI： 10.15980/j.tzzz.2018.11.016.

Huang Meilian, Luo Baikui, Chen Murong, et al. Die Design of Die Casting Engine Chain Cover Based on Numerical Simulation[J]. Special Casting & Nonferrous Alloys, 2018,38(11):1222-1225. DOI： 10.15980/j.tzzz.2018.11.016.

摘要

面对发动机前盖模具开发的两个难点:一是产品顶部浇注成形困难

容易产生缩孔缺陷;二是加工较大平面容易产生翘曲变形

利用Magma软件进行数值模拟

选择合理的浇注系统

给出热节位置、变形模式和变形参数等。基于此

在模具开发过程采用孔位置增加挤压销、优化顶针排布、优化水冷排布、平衡模具包紧力等方式实现压铸模具开发。结果表明

生产出来的压铸件成品率达96%以上

较大平面加工的平面度控制在0.8mm以内

降低了模具开发的成本。

Abstract

Aiming at two difficulties in designing die for engine chain cover such as shrinkage porosities easily generated in the cover as a result of forming difficulty in top pouring and warping deformation during machining large plane

numerical simulation was carried out by the Magma to determine rational gating system and present the hot spot position

deformed mode and parameters.Additionally

according to analysis

various ways including employment of hole position to increase squeeze pins

optimization of the arrangement of die thimble and water cooling

and balance of die wraping force

were applied to realize development of die casting die.The results demonstrate that the qualified rate of die casting engine cover reach up to above 96%

and the flatness of processing on lager plane can be controlled within 0.8 mm

decreasing the cost of die development.