高真空压铸铝合金减震塔工艺开发及应用  

Application and Development of High Vacuum Die Casting Process for Aluminum Alloy Shock Tower

作　　者：汪学阳 黄志垣 廖仲杰 钟鼓 张俊超 阚洪贵[4] 韩志强 万里 Wang Xueyang;Huang Zhiyuan;Liao Zhongjie;Zhong Gu;Zhang Junchao;Kan Honggui;Han Zhiqiang;Wan Li(Guangdong Hongtu Technology（holdings）Co.,Ltd.;Guangdong Hongtu（Nantong）Die-casting Co.,Ltd.;School of Materials,Tsinghua University;Chinalco Materials Application)

机构地区：[1]广东鸿图科技股份有限公司 [2]广东鸿图南通压铸有限公司 [3]中铝材料应用研究院有限公司苏州分公司 [4]安徽江淮汽车股份有限公司 [5]清华大学材料学院

出　　处：《特种铸造及有色合金》2018年第8期860-863,共4页Special Casting & Nonferrous Alloys

基　　金：国家重点研发计划资助项目(2016YFB0101603)

摘　　要：针对某电动汽车用车身结构件减震塔的轻量化要求,研究了铝化设计对其减重效果的影响,并开发了适合于铝合金减震塔的高真空压铸工艺。结果表明,基于装配、刚性和压铸成形的合理设计,可实现减重约35%。浇注系统合理设计和真空度控制是影响卷气和力学性能稳定的重要因素。基于气泡试验和力学性能结果的分析,优化了内浇口设计方案。改善后的铸件经过T6热处理后,其抗拉强度大于300 MPa,屈服强度大于250 MPa,伸长率大于8%,满足使用要求。Based on the requirement of lightening for an electric vehicle structural part of the shock tower,influence of the aluminum design on weight-reduce was analyzed and a high vacuum die-casting process suitable for the aluminum alloy shock tower was developed.The results reveal that the rational mould design can decrease the weight of the shock tower by about 35% based on assemble,rigidity and die casting process.In addition,the reasonable design of the casting system and the control of the vacuum degree are the important factors affecting the stability of the air-gap and mechanical properties.Based on the analysis of bubble test and mechanical analysis,the design of ingate was optimized.The shock tower part can be achieved with tensile strength higher than 300 MPa yield strength higher than250 MPa and the elongation higher than 8%,after T6 heat treatment,meeting the requirement of OEM.

关 键 词：车身结构件 减震塔 高真空压铸 热处理 

分 类 号：TG249.2[金属学及工艺—铸造] TG146.21[一般工业技术—材料科学与工程]