铝合金高真空压铸技术的开发及应用  

Application and Development of High Vacuum Die Casting Process for Aluminum Alloys

作　　者：万里[1] 赵芸芸[2] 潘欢[1] 吴树森[3] 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验 [2]武汉工程大学机电学院 [3]华中科技大学材料成形与模具技术国家重点实验室

出　　处：《特种铸造及有色合金》2008年第S1期-,共4页Special Casting & Nonferrous Alloys

基　　金：清华大学先进成形制造重点实验室开放基金资助项目(2006002)

摘　　要：高真空压铸是近年来工业化国家以实现产品(如轿车)轻量化和绿色制造为目标而竞相研发的一种新技术。以MFT(Minimum Filling Time)法自主开发了涉及高真空压铸的相关关键技术,包括真空截止阀、真空系统、模具的密封结构、涂料、浇注系统等。并以ZL101合金为对象,实验研究了高真空压铸下试样的力学性能和组织。结果表明:开发的高真空压铸技术满足高真空压铸生产的需要,压铸得到的压铸试样组织致密,T6热处理后表面无起泡。ZL101高真空压铸试样的力学性能比普通压铸有较大的提升,尤其是韧性有显著地增长。其中抗拉强度、伸长率分别比普通压铸提高约17.16%、71.98%;但T6热处理后,抗拉强度比铸态下提高了7.68%,伸长率却下降了6.78%。High vacuum die casting process is a novel technology, which are mainly used to make automobiles parts due to lightweight trends. Key technologies including shut-off valve, vacuum system, sealing structure of die, release agent and gating system are investigated based on the MFT process(Minimum Filling Time) in the paper. Microstructure and properties of ZL101 were analyzed in the high vacuum die casting process. The results demonstrated that the developed high vacuum die casting process can meet the needs ...

关 键 词：高真空压铸 压铸铝合金 强度 韧性 组织 

分 类 号：TG249.2[金属学及工艺—铸造]