Closed extrusion forming process of thin-walled irregular cup
In this paper, a combined extrusion process of thinwalled irregular cup shell alternative to the casting process was presented. There are two difficulties in extrusion process, one is the mold cavity filled in the metal irregular flow and temperature fastly decreases, the other is forming load in the forging of dimensional precision. In order to obtain the optimal design, stress field, temperature field, velocity field and load field were analyzed by FEM software. The traditional variation of the forming load with the forming speed has been changed because of heat transfer.One step extrusion has been adopted based on the analysis of forming process. Finally, qualified forgings of wall thickness difference under 0.2 mm were obtained by experiments.
closed extrusion thin-walled cup shell
GUO Yongqiang XU Chunguo REN Guangsheng DING Jun REN Weiwei CHEN Yujin ZHOU He
Plasticity Form Technology Center,Beijing Research Institute of Mechanical & Electrical Technology,Beijing 100083,China
国际会议
The 12th Asian Symposium on Precision Forging 第12届亚洲精密锻造学术研讨会 ASPF2012
苏州
英文
145-149
2012-10-21（万方平台首次上网日期，不代表论文的发表时间）