床头箱灰铸铁件铸造工艺设计及模拟辅助优化  

Casting process design and simulation-assisted optimization of gray iron castings for headstock

作　　者：李开创 赵宇 刘鑫 李莉娟[1] 杨弋涛[1] LI Kaichuang;ZHAO Yu;LIU Xin;LI Lijuan;YANG Yitao(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444

出　　处：《中国铸造装备与技术》2023年第2期58-67,共10页China Foundry Machinery & Technology

摘　　要：从灰铸铁床头箱铸件的结构和技术要求出发,阐述了该件铸造工艺设计过程,并使用UG软件对床头箱零件的三维结构和浇冒口系统进行建模。综合比较浇注位置及分型面位置,采用了半封闭底注式浇注方案,借助ProCAST软件对铸件的充型和凝固过程进行模拟分析,并对冒口和冷铁的尺寸和位置进行了优化设计。结果表明,采用底注式浇注方案,铸件充型平稳且完整,能有效避免浇不足、冲砂等缺陷。优化后的冒口和冷铁使铸件具有合理的凝固顺序,冒口作为最后凝固部位,可望消除重要加工面的缩松缩孔缺陷,确保床头箱铸件的质量要求。Based on the structure and technical requirements of gray cast iron headstock castings,the design process of the casting process has been described,while the 3D structure and riser system of the headstock parts have been modeled by use of UG software.By comprehensively comparing the pouring position and parting surface position,the semi-closed bottom pouring scheme has been adopted.The mold filling and solidification process of the casting has been simulated and analyzed with the help of ProCAST software,while the size and position of the riser and chill have been optimized.The results show that the casting filling is stable and complete by adopting the bottom pouring scheme,which can effectively avoid defects such as insufficient pouring and sand flushing.The optimized riser and chill make the casting have a reasonable solidification sequence.As the final solidification position,the riser is expected to eliminate the shrinkage porosity and shrinkage defects of the important processing surface,which ensures the quality requirements of the headbox casting.

关 键 词：床头箱 灰铸铁 工艺设计 数值模拟 优化 

分 类 号：TG24[金属学及工艺—铸造]