铝合金箱体低压铸造数值模拟及其优化设计

王群; 孙占春; 范云波

doi:10.15980/j.tzzz.2017.03.014

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铝合金箱体低压铸造数值模拟及其优化设计
Numerical Simulation and Design Optimization of Low Pressure Casting Process for Aluminum Alloy Case
2017年37卷第3期页码：284-287
纸质出版日期： 2017 ，
DOI： 10.15980/j.tzzz.2017.03.014

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[1]王群,孙占春,范云波.铝合金箱体低压铸造数值模拟及其优化设计[J].特种铸造及有色合金,2017,37(03):284-287.

Wang Qun, Sun Zhanchun, Fan Yunbo. Numerical Simulation and Design Optimization of Low Pressure Casting Process for Aluminum Alloy Case[J]. Special Casting & Nonferrous Alloys, 2017,37(3):284-287.
[1]王群,孙占春,范云波.铝合金箱体低压铸造数值模拟及其优化设计[J].特种铸造及有色合金,2017,37(03):284-287. DOI： 10.15980/j.tzzz.2017.03.014.

Wang Qun, Sun Zhanchun, Fan Yunbo. Numerical Simulation and Design Optimization of Low Pressure Casting Process for Aluminum Alloy Case[J]. Special Casting & Nonferrous Alloys, 2017,37(3):284-287. DOI： 10.15980/j.tzzz.2017.03.014.

摘要

通过对铝合金箱体结构及低压铸造工艺特性的分析

合理设计浇注系统

并利用ProCAST软件对充型和凝固过程温度场进行数值模拟

发现充型过程流动平稳

温度场较为均匀

但在凝固过程中由于结构的复杂性

在厚壁及热节处出现缩松缺陷。在改进方案中

通过在铸件厚壁处设置冷铁和增大横浇道出口截面积等措施

缩短凝固时间

强化补缩通道

最终通过工业CT断层扫描检测

获得无铸造缺陷的高品质铸件。

Abstract

It is reasonable to design gating system according to analysis of low pressure casting aluminum alloy case structure and characteristics.It is flown smoothly in the filling process with uniform temperature field distribution by using the ProCAST software

however

due to structure complexity

there exist a lot of shrinkage porosity defect in the thick wall and hot spot position during solidification process.In the optimized scheme

by setting cold iron at the thick wall of the case and increasing sectional area of the runner exit

solidification time was shortened and the feeding channel was enhanced.High quality aluminum alloy case without defects was produced by industrial CT tomography detection.