TiC晶须对铜基点焊电极的影响

Effect of the TiC whiskers on the copper base spot welding electrode

利用点焊方法制备了加入TiC晶须的铜基复合材料,并分析了该复合材料的性能。试验结果表明,在铜基体中加入TiC晶须能降低铜基体电阻,提高铜基体硬度,并且TiC晶须起骨架作用而改善基体组织。利用这种复合材料制作点样电极可有效减弱电极和工件的铜铝合金化,提高铜基点焊电极的使用寿命。

Prepared the copper matrix composites with TiC whiskers by spot welding, and analyzed the properties of the composite materials. The test results showed that adding TiC whiskers to copper matrix could reduce the copper substrate resistance, improve the hardness, and TiC whiskers could form the function of skeleton to improve the matrix organization. Using this composite material as electrode could effectively weaken the Cu-Al synthesis between the electrode and the workpiece, thus prolong the life of the copper base spot welding electrode.