薄壁转向电机壳体压铸件厚壁处缩孔缺陷控制  

Control of Shrinkages in Thick Walls of Thin-Wall Steering Motor Housing Die-Casting Parts

作　　者：计鑫 刘立君 贾志欣 李继强 廖大华 方杰 JI Xin;LIU Li-jun;JIA Zhi-xin;LI Ji-qiang;LIAO Da-hua;FANG Jie(School of Mechanical Engineering,Zhejiang Sci-Tech University,Ningbo 315600,Zhejiang,China;School of Mechatronics and Energy Power,Ningbo Institute of Technology,Zhejiang University,Ningbo 315600,Zhejiang,China;Ningbo Zhong Xin Lean Technology Co.,Ltd.,Ningbo 315600,Zhejiang,China)

机构地区：[1]浙江理工大学机械工程学院,浙江宁波315600 [2]浙大宁波理工学院机电与能源动力学院,浙江宁波315600 [3]宁波众鑫里美科技有限公司,浙江宁波315600

出　　处：《铸造》2025年第1期98-107,共10页Foundry

基　　金：宁波市北仑区关键核心技术攻关项目(2022BLG008);宁波创新联合体项目(2022H001)。

摘　　要：针对薄壁转向电机壳体压铸件在安装耳厚壁结构处出现的缩孔缺陷进行了控制研究。通过应用铸造模拟软件ProCAST对零件的铸造工艺进行了CAE模拟仿真,发现了铸造过程中的孤立液相区和模具型腔热节问题,并进行了深入分析,设计了相应的浇注系统优化和冷却系统改进方案。结合模拟分析和实际生产结果,最终采用了增加辅助浇道和合理分布冷却水道的优化方案,显著提高了压铸过程的可控性和稳定性,降低了产品缺陷率,大幅提高了生产效益。通过改善液态金属的流动性并实现均匀冷却,为解决类似制造过程中高质量压铸件的缩孔问题提供了可行且可持续的解决方案。This paper conducted a study on the control of shrinkage defects that occur in the mounting lug structure of thin-walled steering motor housing die-casting parts.The casting simulation software ProCAST was used to perform CAE simulation on the casting process of the parts.Based on the simulation results,the problems of isolated liquid phase areas and hot spots in the mold cavity during the casting process were discovered and analyzed in depth.In order to solve these problems,corresponding gating system optimization and cooling system improvement plans were designed.Combining simulation analysis and actual production results,an optimization plan was finally adopted to add auxiliary sprues and reasonably distribute cooling water channels.This solution significantly improves the controllability and stability of the die-casting process,reduces the product defect rate,and thus significantly improved production efficiency.By improving the fluidity of liquid metal and achieving uniform cooling,it provided a feasible and sustainable solution to the shrinkage problem of high-quality die castings in similar manufacturing processes.

关 键 词：压铸 缩孔缺陷 辅助浇道 孤立液相区 

分 类 号：TG244[金属学及工艺—铸造]