铝合金发动机悬置支架挤压铸造工艺研究  

Forming Process of Squeeze Casting Aluminum Alloy Engine Mounting Bracket

作　　者：陈云[1] 李杰 罗继相[1] 杜娟[2] 夏望红 CHEN Yun;LI Jie;LUO Ji-xiang;DU Juan;XIA Wang-hong(School of Logistics Engineering,Wuhan University of Technology,Wuhan 430063,Hubei,China;Department of Mechanical Electronic Engineering,Wuhan Technical College of Communications,Wuhan 430065,Hubei,China;Guangzhou Kinbon Liquid Mold Forging Technology Co.,Ltd.,Guangzhou 511300,Guangdong,China)

机构地区：[1]武汉理工大学物流工程学院,湖北武汉430063 [2]武汉交通职业学院,湖北武汉430065 [3]广州金邦液态模锻技术有限公司,广东广州511300

出　　处：《铸造》2020年第2期167-173,共7页Foundry

摘　　要：发动机悬置支架是汽车悬置系统中重要的承力结构件,通常采用球墨铸铁砂型铸造。为使汽车轻量化,根据其结构和使用性能要求等特点,研究了挤压铸造生产铝合金发动机悬置支架的工艺过程。结果表明,当挤压比压为100 MPa,挤压速度采用分段调速,即第一段冲头速度设置为180 mm/s,第二段冲头速度设置为80 mm/s,第三段冲头速度设置为50 mm/s,且浇注温度为700℃,模具温度约为200℃,保压时间约为75 s时,被挤压铸造生产的铝合金发动机悬置支架其各项性能指标均能达到设计要求。The engine mounting bracket is an important load-bearing structure part in automobile mounting system. It is usually made of nodular cast iron and manufactured by sand casting process. In the present study, light metal aluminum alloy are used for the reduction of auto-weight, and the forming process was investigated by using squeeze casting based on the structure and performance requirements of the engine mounting bracket. The results are in satisfactory and the performance indexes of squeeze cast engine mounting brackets all meet the design requirements when the extrusion specific pressure is 100 MPa, the extrusion speed is adjusted by sections, that is, the punch speed is set to 180 mm/s in the first section, to 80 mm/s in the second section, to 50 mm/s in the third section, and the pouring temperature, mold temperature and holding time are about 700 ℃, 200 ℃, 75 s, respectively.

关 键 词：发动机悬置支架 挤压铸造 模具设计 

分 类 号：TG249.28[金属学及工艺—铸造]