大型复杂型面钛合金超塑成形/扩散连接模气密性研究  

Study on air tightness of superplastic forming/diffusion bonding die for titanium alloys with large complex profiles

作　　者：任广义 王晓康 王高明 王宇盛 REN Guang-Yi;WANG Xiao-kang;WANG Gao-ming;WANG Yu-sheng(Technology Equipment Company,AVIC Cheng'du Aircraft Industrial(group)Co.Ltd.,Chengdu,Sichuan 610091,China)

机构地区：[1]成都飞机工业(集团)有限责任公司技术装备公司,四川成都610091

出　　处：《模具工业》2022年第11期22-26,共5页Die & Mould Industry

摘　　要：对大型复杂型面钛合金超塑成形/扩散连接模的气密性进行研究,分析现有模具气密性差的原因,并提出改进措施,基于改进措施进行工艺试验验证。试验结果表明,改进措施能有效提升模具气密性能,扩散连接阶段可以加载>1.5 MPa的高压氩气,保证了零件的扩散连接质量。The air tightness of superplastic forming/diffusion bonding die for titanium alloy with large complex surface was studied.The reasons for the poor air tightness of existing die were analyzed,and the improvement measures were put forward.The process verification test was carried out based on the improvement measures.The experimental results showed that the improved measures could effectively improve the air tightness of the die,and the diffusion bonding stage could be loaded with high-pressure argon gas greater than 1.5 MPa,which ensured the diffusion bonding quality of the parts.

关 键 词：钛合金 超塑成形/扩散连接 模具 气密性检测 

分 类 号：TG386.1[金属学及工艺—金属压力加工]