Study on the Casting Technology of the Front Cast Aluminum Support of the Aluminum Alloy Subframe
Author of the article:LI Mingjie;DENG Meimei;DENG Hongqiang;LI Zhongqi;YANG Xiaolin
Author's Workplace：China Railway High-speed Railway Electrical Equipment Co.,Ltd.,Baoji 721000,China
Key Words：thin wall casting hot spot grid pouring system
Abstract：Cast aluminum bearing in front of aluminum alloy subframe belongs to thin-wall castings. In order to better guarantee the product quality and ensure that the appearance and performance of the casting were in line with the technical requirements, the process analysis was carried out from the aspects of casting structure characteristics, casting hot section,casting scheme and process parameters. The results show that by analyzing the structural characteristics of the pre-cast aluminum support, the sand core is used to form the local concave structure of the casting. Grid is added to improve the filling capacity of liquid aluminum and enhance the effect of hot spot retracement. Methods such as increasing air cooling for local cooling, optimizing casting system, optimizing ejector arrangement, etc., it can improve the filling capacity of liquid aluminum, improve the local overheating of castings, realize sequential solidification, and avoid the deformation of castings, which can greatly solve the casting defects of pre-cast aluminum supports and improve the casting yield.
