低压铸造GIS用壳体凝固仿真分析与工艺优化

李红强

doi:10.15980/j.tzzz.2016.06.009

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低压铸造GIS用壳体凝固仿真分析与工艺优化
Solidification Simulation and Process Optimization of the Housing for GIS
2016年36卷第6期页码：591-593
纸质出版日期： 2016 ，
DOI： 10.15980/j.tzzz.2016.06.009

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[1]李红强.低压铸造GIS用壳体凝固仿真分析与工艺优化[J].特种铸造及有色合金,2016,36(06):591-593.

Li Hongqiang. Solidification Simulation and Process Optimization of the Housing for GIS[J]. Special Casting & Nonferrous Alloys, 2016,36(6):591-593.
[1]李红强.低压铸造GIS用壳体凝固仿真分析与工艺优化[J].特种铸造及有色合金,2016,36(06):591-593. DOI： 10.15980/j.tzzz.2016.06.009.

Li Hongqiang. Solidification Simulation and Process Optimization of the Housing for GIS[J]. Special Casting & Nonferrous Alloys, 2016,36(6):591-593. DOI： 10.15980/j.tzzz.2016.06.009.

摘要

通过ProCAST软件对一种GIS用壳体的原铸造工艺进行充型与凝固仿真分析

研究了该零件出现的铸造缺陷的原因

并进行了工艺优化。结果表明

大法兰面采用厚25mm的随型冷铁

其工艺的凝固过程出现孤立液相区

导致铸件的缩孔缺陷;优化工艺后

大法兰面采用厚15mm的冷铁

让开内浇道位置且冷铁内圆周与筒壁保持10mm的距离

其凝固过程为顺序凝固

使缩孔消除。对模拟结果进行了生产验证

模拟结果符合生产实际。

Abstract

With the help of ProCAST software

solidification simulation of the initial casting process of the housing for GIS was conducted to understand origination of defects occurred.Then the initial casting process was optimized with the help of computer simulation technology.The results demonstrate that isolated liquid region occurrs in the solidification process of the large flange surface with 25 mm thickness of cold iron

resulting in shrinkage defects.After process optimization

through setting 15 mm thick cold iron on the large flange surface and avoiding the gate locations as well as the inner circumference of chill keeping a distance of 10 mm with the cylinder wall

the solidification process can meet the sequential solidification

so shrinkage defects are eliminated.The simulation results were validated

and the simulation results were well agreement with the actual production ones.