滤清器压铸件的孔类缺陷分析及改进  

Hole Defect Analysis and Improvement of Filter Die Casting

作　　者：王巧玲[1] 汪中厚[1] 刘静[1] 张扬扬[1] 

机构地区：[1]上海理工大学机械工程学院.上海200093

出　　处：《热加工工艺》2012年第15期28-31,35,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(51075279);上海市教委科研创新重点资助项目(10ZZ92);上海市教委重点学科建设资助项目(J50503)

摘　　要：为了提高汽车滤清器压铸件的质量,利用软件FLOW3D模拟充型及凝固过程。通过对模拟结果的分析,提出了减少气孔和微缩孔缺陷的方法。主要解决措施是修正压铸模浇道和溢流系统。根据修改后的方案进行了数值模拟,结果表明,当内浇口设计合理且溢流截面积为内浇口截面积的70%时,铸件孔类缺陷最少。该结果不仅可以检验浇注系统和溢流系统设计的正确性,还可以有效提高铸件的气密性和强度。To improve the quality of die castings for the car filter, the filling and solidification process were simulated by the FLOW3D. Through simulation results analysis, a method of decreasing the defects of gas porosity and shrinkage porosity was introduced. The main measures were to modify die runner and overflow system. The ameliorated plans were simulated again. Results show that when the ingate is reasonable and overflow cross-sectional area is 70% of gate sectional area, the shrinkage defects is least. These can check the correctness of the pouring system and the overflow system, still can effectively improve the air tightness and strength.

关 键 词：FLOW3D 数值模拟 压铸 气孔 缩孔缩松 

分 类 号：TG292[金属学及工艺—铸造] TG249.2