摘要
近来铝合金/钢、铝合金/钛合金等异种金属的连接在汽车等行业越来越受到重视。但是采用熔化焊来连接异种金属非常困难,同时扩散焊的效果也不很理想,主要是因为焊接过程中在界面处会产生较多的脆性金属间化合物。因此,急需一种高可靠性、高效率的新工艺对此类异种材料进行高质量的连接。激光滚压焊正是针对这一需求而开发的新型连接工艺。详细介绍了该工艺方法的提出背景、工作原理、界面上金属间化合物的特点以及所得到焊接接头的主要性能。
Dissimilar metals＇ joining （steel/aluminum alloy and titanium/aluminum alloy） has been paid attention to in vehicle industry, recently.However,fusion welding of such dissimilar metals is difficult as a result of generating the brittle intermetallic compound at the joint interface.Meanwhile,the joining effect of diffusion welding is not very ideal.Therefore,new type welding processes with high reliability and productivity for the dissimilar metals are demanded.Laser roll welding,one new type welding technology was developed aiming to meet the demand.The background,operating principle,characteristics of intermetallic compound at the joint interface and main performances of the joint were introduced in detail in this paper.
出处
《电焊机》
北大核心
2010年第11期37-41,共5页
Electric Welding Machine
基金
河南科技大学青年科学研究资助项目(2006QN069)
关键词
激光滚压焊
异种金属
搭接接头
金属间化合物
性能
laser roll welding
dissimilar metals
lap joint
intermetallic compound
performance
