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采用有限元分析软件Procast对某轿车刹车系统卡钳叠型铸造时充型和凝固过程进行了模拟和研究,预测了缩孔、缩松等铸造缺陷出现的位置。结果表明,这些模拟缺陷与实际缺陷位置基本一致。同时,根据模拟分析结果对铸造工艺进行优化,采用反向浇注、切断分支直浇道的优化工艺稳定了浇注系统中的铁液,改善了缸体部位的缩孔、缩松,提高了铸件的合格率。
The finite element analysis software Procast was used to simulate and study the filling and solidification process of a car brake caliper stack casting, and predicted the occurrence of casting defects such as shrinkage cavity and shrinkage. The results show that these simulated defects are basically consistent with the actual defect location. At the same time, according to the results of simulation analysis, the casting process is optimized. The reverse pouring and cutting off the sprue are used to stabilize the molten iron in the pouring system and improve the shrinkage and shrinkage of the cylinder part, Pass rate.