电阻点焊熔核形成过程的激光传感和表征  

Laser sensing and characterization of nugget formation in resistance spot welding(RSW)

作　　者：张鹏贤[1,2] 刘兴刚[1,2] 刘鹏[1] 

机构地区：[1]兰州理工大学有色金属合金及加工教育部重点实验室,甘肃兰州730050 [2]兰州理工大学甘肃省有色金属新材料重点实验室,甘肃兰州730050

出　　处：《兰州理工大学学报》2011年第3期20-22,共3页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(50275028);兰州理工大学科研基金(0901005)的资助

摘　　要：探索一种采用激光位移传感器获取电阻点焊过程电极位移信号的实现方法.选用高精度激光位移传感器搭建获取电极位移信号的计算机数据采集系统.通过大量点焊过程位移信号与试验结果的对比分析,对其熔核形成过程进行物理解释和表征.结果表明:获得的电极位移信号可以表征熔核形成过程,能够作为监测点焊接头质量的信息源.An implementation method was explored for obtaining electrode displacement signal in RSW with laser displacement sensor.A computer data acquisition system was built up for obtaining this signal with high-precision laser displacement sensor.The nugget formation was explained and characterized by means of comparison between the results of a great number of test and the laser displacement signal in RSW process.The result showed that the electrode displacement signal could be used to characterize the formation of the nugget and to function as a monitor of spot weld quality information.

关 键 词：电极位移 激光位移传感器 熔核 表征 

分 类 号：TG453.9[金属学及工艺—焊接]