超声冲击改善焊接接头残余应力的研究  

Study on improving the residual stress of welded joints by ultrasonic impacting treatment

作　　者：王荣[1] 杨峰[1] 顾晓波[1] 

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2009年第4期304-307,共4页Journal of Jiangsu University of Science and Technology:Natural Science Edition

摘　　要：超声冲击处理是一种改善焊接接头残余应力的新方法.本文对该方法所用的超声冲击处理装置进行了研究,研制成功具有频率自动跟踪和输出功率自动调节功能的超声冲击处理装置.利用该设备,进行了Q235,HG70钢超声冲击处理效果的验证性试验.初步试验结果表明:超声冲击处理装置的设计满足实际工作需要,该方法能够有效地改善焊接接头的残余应力.Ultrasonic peening treatment is a new method that can improve residual stress of welded joints. In this paper, the ultrasonic peening treatment equipment was studied and developed. It was with the functions of automatic frequency-tracking and automatic output power-adjusting. With the equipment, the verification tests of ultrasonic peening treatment effectiveness on the Q235, HG70 steel were carried out. Preliminary results indicate that the equipment can satisfy the engineering requirement. Ultrasonic peening treatment can effectively improve the residual stress of welded joints.

关 键 词：残余应力 超声冲击 设备 

分 类 号：TG405[金属学及工艺—焊接]