用电流波形控制法提高镀锌钢板点焊电极的寿命  

IMPROVING ELECTRODE LIFE OF SPOT WELDING OF GALVANIZED STEEL BY CONTROLLING CURRENT WAVE

作　　者：吴志生[1] 单平[1] 廉金瑞[1] 胡绳荪[1] 陈辉[2] 

机构地区：[1]天津大学,300072 [2]铁道部科学研究院金属及化学研究所,北京市100081

出　　处：《焊接》2002年第11期24-26,共3页Welding & Joining

基　　金：国家自然科学基金资助项目 (50 0 4 50 1 9)

摘　　要：作者通过分析镀锌钢板点焊电极寿命降低的原因 ,提出了提高镀锌钢板点焊电极寿命的电流波形控制法。采用该方法进行了点焊电极寿命试验 ,研究了工件表面飞溅率和电极寿命随焊前电流脉冲的幅值、焊前电流通电时间的变化规律。试验结果表明 :采用电流波形控制法可将镀锌钢板点焊电极的寿命由原来的 40 0点提高到980点 ;工件表面的飞溅率及电极寿命与焊前电流脉冲幅值。In this paper, the method which can improve electrode life of spot welding of galvanized steel is put forward through analyzing the cause of electrode life loss for spot welding of galvanized steel. The electrode life experiment is carried by controlling current wave and the relation between work piece surface spattering rate, electrode life and the amplitude of current pulse before spot welding, the current time before spot welding is investigated. The experiment results show that electrode life is improved from 400 point to 980 point; the work piece surface spattering rate and the electrode life is relation to the amplitude of current pulse before spot welding and the current time before spot welding.

关 键 词：电流波形控制法 镀锌钢板 点焊 电极寿命 

分 类 号：TG453.9[金属学及工艺—焊接] TG438.2