模具镶块铸钢件缩孔缩松预测及铸造工艺优化  

Prediction of Shrinkage Porosity and Processing Optimization of Casting Die Inserts

作　　者：陈绪梁 王剑涛[1,2] 黄锋[1,2] 秦训鹏[1,2] 林平 徐昀[1,2] Chen Xuliang Wang Jiantao Huang Feng Qin Xunpeng Lin Ping Xu Yun(Hubei Collaborative Innovation Center {or Automotive Components Technology Hubei Key Laboratory of Advanced Technology for Automotive Components Dong{eng Die Stamping Technology Co. , Ltd.)

机构地区：[1]汽车零部件技术湖北省协同创新中心 [2]现代汽车零部件技术湖北省重点实验室 [3]东风模具冲压技术有限公司

出　　处：《特种铸造及有色合金》2017年第3期257-261,共5页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51575415);湖北省科技支撑计划资助项目(2014BAA012)

摘　　要：为预测模具镶块在铸造过程存在的缩孔、缩松缺陷,使用ProCAST软件对该铸件的凝固过程进行了模拟仿真,并与试验结果进行了对比。结果表明,对于模具镶块铸件,三种常用缩孔、缩松预测方法均存在一定的局限性,而采用将定性方法和缩松临界值法相结合的方法可较准确地对铸件成形过程进行缩孔、缩松预测。在模拟仿真分析的基础上,对原铸造工艺进行了优化,有效减少了镶块铸件中的缩孔、缩松缺陷。To predict shrinkage porosity formed in the process of casting die inserts,the solidification process of the original casting was simulated by the ProCAST software and compared with experimental results.The results indicate that three kinds of methods predicting shrinkage porosity have a certain limitation under the condition of the process.Moreover,a comprehensive method of the qualitative method combined with shrinkage porosity critical value method can predict the defects of shrinkage porosity accurately.Based on the simulation and analysis,the casting process was optimized,and the shrinkage porosity defects were reduced effectively.

关 键 词：砂型铸造 数值模拟 缩孔缩松 工艺优化 

分 类 号：TG260[金属学及工艺—铸造]