Simulation Analysis of Crack in a Large-scale Steel Investment Castings and its Processing Optimization

Shi Yuanjin; Ma Bo

doi:10.15980/j.tzzz.2014.03.021

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Simulation Analysis of Crack in a Large-scale Steel Investment Castings and its Processing Optimization
Vol. 34, Issue 3, Pages: 279-282(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.03.021

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[1]石远进,马波.某大型精密铸钢件铸造裂纹仿真分析及改善[J].特种铸造及有色合金,2014,34(03):279-282.

Shi Yuanjin, Ma Bo. Simulation Analysis of Crack in a Large-scale Steel Investment Castings and its Processing Optimization. [J]. Special Casting & Nonferrous Alloys 34(3):279-282(2014)
[1]石远进,马波.某大型精密铸钢件铸造裂纹仿真分析及改善[J].特种铸造及有色合金,2014,34(03):279-282. DOI： 10.15980/j.tzzz.2014.03.021.

Shi Yuanjin, Ma Bo. Simulation Analysis of Crack in a Large-scale Steel Investment Castings and its Processing Optimization. [J]. Special Casting & Nonferrous Alloys 34(3):279-282(2014) DOI： 10.15980/j.tzzz.2014.03.021.

摘要

某大型精密铸钢件批量生产以来

多次出现批量裂纹

裂纹位置相对集中

裂纹比例为30%

0%。利用铸造工艺数值模拟软件ProCAST对原工艺进行了应力场模拟

根据模拟结果对铸钢件裂纹缺陷进行了分析。提出了几种改进方案并对其进行了验证

最终确定了改进方案

经试验验证

改进工艺后裂纹比例降低至5%。

Abstract

Batches of cracking defects occur in large-scale steel investment castings with relative centralized location and a ratio of 30%to 50%.The stress field in the initial process was simulated by ProCAST software

and cracking defects were analyzed based on the simulation results.And then some improved processes were put forward and tested.Finally

desirable processing parameters were determined.Practical production reveals that the crack defect in the castings is decreased to 5%.