New extrusion process of Mg alloy automobile wheels  

作　　者：王强 张治民 张星 李国俊 

机构地区：[1]College of Materials Science and Engineering,North University of China [2]Engineering Research Center of Magnesium-base Material Processing Technology,Ministry of Education,North University of China

出　　处：《Transactions of Nonferrous Metals Society of China》2010年第B07期599-603,共5页中国有色金属学报（英文版）

基　　金：Project(50735005)supported by the National Natural Science Foundation of China

摘　　要：The recent research and development of forged magnesium road wheel were reviewed.Methods of flow-forming,spin forging of manufacturing a forged magnesium alloy wheel were introduced.A new extrusion method was investigated especially. Extrusion from hollow billet was proposed in order to enhance the strength of spoke portion and reduce the maximum forming load. By means of the developed technique,the one-piece Mg wheels were produced successfully by extrusion from AZ80+alloy.At the same time,the existing problems on the research and development of forged magnesium road wheel were analyzed.The impact testing,radial fatigue testing and bending fatigue testing results show that AZ80+wheel can meet application requirement in automobile industry.The recent research and development of forged magnesium road wheel were reviewed.Methods of flow-forming,spin forging of manufacturing a forged magnesium alloy wheel were introduced.A new extrusion method was investigated especially. Extrusion from hollow billet was proposed in order to enhance the strength of spoke portion and reduce the maximum forming load. By means of the developed technique,the one-piece Mg wheels were produced successfully by extrusion from AZ80＋alloy.At the same time,the existing problems on the research and development of forged magnesium road wheel were analyzed.The impact testing,radial fatigue testing and bending fatigue testing results show that AZ80＋wheel can meet application requirement in automobile industry.

关 键 词：magnesium alloy road wheel EXTRUSION flow-forming spin forging 

分 类 号：TG379[金属学及工艺—金属压力加工] U463.343[机械工程—车辆工程]