TC4板材折弯临界板厚的分析与计算  

Calculation of TC4 Sheet Critical Thickness in Bending Process

作　　者：廖金华[1] 赵冰[1] 张荣霞[1] 高志勇[2] 

机构地区：[1]中航工业北京航空制造工程研究所 [2]空军驻华北地区军事代表室

出　　处：《航空制造技术》2013年第16期107-108,118,共3页Aeronautical Manufacturing Technology

摘　　要：通过对钛合金TC4板材在750℃折弯的应力计算与有限元分析,预测了板材在利用工装折弯时不出现裂纹的情况下其临界板材厚度,并通过工艺试验进行了验证;结果均表明,在利用圆角为R2.25的凸模对TC4板材在750℃折弯时,材料外层不出现裂纹的临界厚度为1.33mm。The sheet bending behavior of TC4 titanium alloy is studied by stress calculating and FEM method. So, the critical thickness of titanium alloy for bending process is obtained. At last, sheet bending experi- ments are carried out to verify the calculation results. It in- dicates that the surface cracks of TC4 sheet will not appear at 750℃ while the bending radius is 2.25mm and the sheet thickness is no more than 1.33mm.

关 键 词：钛合金 板材折弯 临界板厚 表面裂纹 

分 类 号：TG306[金属学及工艺—金属压力加工]