铝合金机匣体多向精锻工艺优化.pdfVIP

35 5 2010 10 Vol35 No5 FORGING STAMPING TECHNOLOGY Oct. 2010 1 1 1 2 2 2 , , , , , ( 1. , 4300 4; 2. ( ) , 400050) : , A04 , , , , , , : ; ; ; DOI: 103969/jissn10003940201005006 : TG319 : A :( 2010) Optimization of multi irectional precision forging for aluminum alloy casing 1 1 1 2 2 2 LI Qingjie , XIA Juchen , DENG Lei , CHEN Xuezhu , HU Zhi , FAN Qingsong ( 1State Key Lab of Material Processing and Die Mould Technology, H uazhong University of Science Technology, Wuhan 4300 4, China; 2. Jianshe Indust ry ( Group) Corporation Limited, Chongqing 400050, China) Abstract: T he material utilization ratio and production eff iciency were improved by using multi direct ional precision forging method in casing production. H ow ever, for t he complex shape of casing and characteristics of A04 aluminum alloy which has a bad plastic workability and strain rate sensitivity, some defects w ould be produced during the forming process, such as underfilling and fold. T heoretical analysis of plastic forming, thermalmechanical finite element numerical simulation and experimental study were carried out. T he rule of deformat ion behavior and material flow were summarized. The optimization of billet shape and preforging process w ere proposed to solve the problems appeared in production. Qualified forging parts were obt ained and industrial production was achieved. Keywor s: casing; multi directional precision forging; optimization; finit e element simulation