铸造技术2024，Vol.45Issue(2)：163-172,10.DOI:10.16410/j.issn1000-8365.2024.3251
低压铸造铝合金轮毂工艺参数对缩孔缺陷的影响
Effects of Low-pressure Casting Processes on Shrinkage Porosity Formation in Al Alloys
摘要
Abstract
Over 90%of passenger car wheels are made of aluminum alloys by a low-pressure casting process.Casting defects are among the most important factors influencing the mechanical properties and service safety of automotive wheels.Therefore,controlling casting defects effectively not only is a product quality issue but also impacts the safety of the entire vehicle.The influence of the low-pressure casting process on shrinkage pores is systematically studied and summarized in this paper.To predict the generation of shrinkage porosity defects in low pressure casting hubs,the effects of process parameters such as pouring temperature,mold preheating temperature,filling rate and holding pressure on the formation of shrinkage porosity were studied.The results show that increasing the pouring temperature and mold preheating temperature increases the filling capacity and reduces the shrinkage porosity to a certain extent.However,overheating the mold or a super high pouring temperature will lead to the opposite effects.In addition,slower filling at the laminar stage significantly reduces the shrinkage porosity on the premise of successful filling,and a high holding pressure helps with closing the pores.关键词
汽车轮毂/低压铸造/铝合金/缩孔缩松/有限元计算Key words
automobile wheel/low-pressure casting/Al alloy/shrinkage porosity/finite element method分类
矿业与冶金引用本文复制引用
李钟尧,吴雪龙,苗以升,薛程鹏,郎玉玲,孔德才,马小英,乔海波,王俊升..低压铸造铝合金轮毂工艺参数对缩孔缺陷的影响[J].铸造技术,2024,45(2):163-172,10.基金项目
国家自然科学基金(52073030) （52073030）
国家自然科学基金-广西联合基金(U20A20276) （U20A20276）
