金属超声点焊工艺优化研究进展  

Research Progress on Process Optimization of Ultrasonic Spot Welding for Metals

作　　者：孙卓彬 梁永梅 王立伟 汪殿龙 梁志敏 SUN Zhuobin;LIANG Yongmei;WANG Liwei;WANG Dianlong;LIANG Zhimin(School of Materials Science and Engineering,Hebei Key Laboratory of Material Near-Net Forming Technology,Hebei University of Science and Technology,Shijiazhuang 050018,China)

机构地区：[1]河北科技大学材料科学与工程学院河北省材料近净成形技术重点实验室,河北石家庄050018

出　　处：《热加工工艺》2024年第15期1-7,共7页Hot Working Technology

基　　金：国家自然科学基金资助项目(52002112);河北省自然科学基金资助项目(E2020208089)。

摘　　要：超声点焊(ultrasonic spot welding,USW)作为一种低温、低能耗和高效率的固相连接技术,能够实现传统焊接方法难以完成的Al、Cu、Ti等同种及异种金属的连接,具有广阔的应用前景。接头强度是评估USW焊接质量的重要指标之一,其影响因素众多且相互之间的作用较为复杂。本文围绕USW工艺设计和接头强度的内在联系,从声级尖端设计、材料预处理、焊接参数、中间层金属添加和复合焊接等五方面介绍了优化接头强度的研究进展,并展望了研究方向,以期为进一步提高接头强度提供可行思路。As a solid-state connection technology with low temperature,low energy consumption and high efficiency,ultrasonic spot welding(USW)can realize the connection of similar and dissimilar metals of Al,Cu and Ti,which are difficult to be prepared by traditional welding methods,and it has a broad application prospect.The tensile strength is one of the most important indicator for evaluating the quality of USW,which can be influenced by numerous and complex factors.This paper focused on the internal relationship between the process design of USW and the joint strength,and the research progress of improving strength was introduced from the following five aspects:sonotrode tip design,metal pretreatment,welding parameters,addition of metal interlayer and hybrid welding.Finally,the research direction was proposed to provide feasible ideas for further improving the joint strength.

关 键 词：超声点焊 声级尖端 预处理 中间层金属 复合焊 

分 类 号：TG453.9[金属学及工艺—焊接]