电阻钎焊过程的动态电阻特征分析

电阻钎焊过程的动态电阻特征分析 Analysis of dynamic resistance characteristics in resistance brazing process 张昌青 ZHANG Changqing 1 first-author 荣琛 RONG Chen 1 秦卓 QIN Zhuo 1 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室 State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology 采用电阻钎焊进行了1060铝板与T2铜板的搭接试验,通过设计复合电极头和选用阻抗较大的工艺垫片实现热补偿的作用,可在较低电流水平下实现铜铝异种材料的焊接。设定不同的焊接工艺参数,利用实时传感技术实时采集电阻钎焊动态过程的温度、电极电压和电极电流信号,并以温度为依据初步确定焊接工艺参数的范围,然后通过计算和处理检测信号得到动态电阻曲线。实验结果表明:焊接电流、焊接时间的变化导致提供的焊接能量不同,电阻钎焊过程中出现不同的动态电阻变化,并形成不同的焊接接头质量特征,从而为焊接接头质量的非破坏性评估提供了可能。 In this paper,resistance brazing was used to conduct the lap test of 1060 aluminum plate and T2 copper plate,and the design was compounded.The electrode head and the process gasket with large impedance are used to achieve thermal compensation,which can realize the welding of copper and aluminum dissimilar materials at a lower current level,set different welding process parameters,and use real-time sensing technology to solder the resistance.The temperature,electrode voltage and electrode current signals of the dynamic process are collected in real time,and the range of the welding process parameters is initially determined based on the temperature,and then the dynamic resistance curve reflecting the welding process is obtained by calculating and processing the detection signal.The dynamic resistance of the welding process is studied.The experimental results show that the changes of welding current and welding time lead to different welding energy,and different dynamic resistance changes occur in the process of resistance brazing,and different welding joint quality characteristics are formed,wh ich provides the possibility for non-destructive evaluation of welding joint quality. 电阻钎焊 动态电阻 波形分析 resistance brazing dynamic resistance waveform analysis TG454 2022-03-08 12 50