铸造技术2024，Vol.45Issue(6)：585-592,8.DOI:10.16410/j.issn1000-8365.2024.3249
基于数值模拟的汽车后悬梁压铸成型工艺设计
Design of Die-casting Moulding Process for an Automotive Rear Suspension Beam Based on Numerical Simulation
摘要
Abstract
Aluminium alloy die casting has been widely used in the development of new energy vehicle parts due to its advantages of lightweight and high-efficiency production.However,considering the high performance requirements of castings in the automotive field,it is necessary to design a reasonable die-casting scheme to effectively control common die-casting defects such as gas porosity,inclusions,and shrinkage holes to meet product quality requirements.In this paper,taking the die-casting parts of automobile rear suspension beams with uneven wall thickness as the research object,the two gating system schemes were compared by numerical simulation,the casting defects existing in production were analysed,and an improvement scheme was proposed.The results show that the five-gate scheme can shorten the filling distance of molten aluminium and reduce defects such as entrained air and oxidation inclusions.Aiming at the shrinkage hole problem of the two thick walls far away from the inner gate,a scheme of inserting copper alloy blocks in die was proposed.The numerical simulation results show that the cooling rate of aluminium melt at the thick walls can be accelerated by a high thermal conductivity CuCoBe mould insert,and the hot spot and shrinkage holes can be effectively eliminated.关键词
铝合金压铸/浇注系统/数值模拟/缩孔Key words
aluminium alloy die casting/casting system/numerical simulation/shrinkage hole分类
矿业与冶金引用本文复制引用
曹智强,王火生,杨秦嘉..基于数值模拟的汽车后悬梁压铸成型工艺设计[J].铸造技术,2024,45(6):585-592,8.基金项目
福建省科技计划项目(2020H0022) （2020H0022）
