摘要
文章通过对搅拌摩擦焊工作原理及焊接特点进行详述,并参照国内某汽车电池包模拟双面焊焊接接头,对搅拌摩擦焊装配过程中产生的大组对间隙进行分析研究。结果表明,对焊缝不同间隙量进行填充,与无间隙焊接接头对比,FSW焊后外观成型良好,焊缝内部融合致密,无孔洞缺陷。拉伸试样断裂位置是焊缝内部产生“S”线缺陷位置,填充间隙接头抗拉强度可达到176MPa~181MPa,仅略低于无间隙接头强度6.8%,说明焊缝间隙填充方法可有效解决大组对间隙搅拌摩擦焊问题。
In this paper,the working principle and welding characteristics of friction stir welding are described in detail,and large pair gap generated in the process of friction stir welding is analyzed and studied by referring to the simulated double-sided welding joint of an automobile battery pack in China.The results show that,compared with the welded joints without gap,the FSW welded joints are well formed,the internal fusion of the weld is dense,and there is no hole defect.The fracture position of the tensile sample is the position where the“S”line defect occurs inside the weld.The tensile strength of the filled gap joint can reach 176MPa~181MPa,which is only slightly lower than the strength of the joint without gap 6.8%.It shows that the weld gap filling method can effectively solve the friction stir welding problem of large pair gap.
作者
叶树茂
金鑫
王东辉
齐芃芃
黄晨
邓鑫
Ye Shumao;Jin Xin;Wang Donghui;Qi Pengpeng;Huang Chen;Deng Xin(Liaoning Zhongwang Group Co.,Ltd.,Liaoyang 111003,China)
出处
《有色金属加工》
CAS
2023年第2期32-35,49,共5页
Nonferrous Metals Processing
关键词
搅拌摩擦焊
组对间隙
焊缝填充
内部组织
抗拉强度
friction stir welding
pairing clearance
weld filling
internal organization
tensile strength
