钨极氩弧焊和等离子弧焊是化工企业和压力容器制造企业广泛使用的焊接技术。它们的共同特点之一就是其非熔化极都是难熔金属钨,钍钨或铈钨制成的电极棒。电极棒在使用过程中不可避免地要被烧损,修整电极棒尖部便成了必须经常进行的工作。目前,据笔者所知,各厂仍在沿用砂轮机修磨的方法。这种方法费时费力,在无吸尘装置的条件下修磨,工人要长时间 TIG welding and plasma arc welding are widely used by chemical and pressure vessel manufacturers. One of their common features is that their non-melting electrodes are all made of refractory metal tungsten, thoriated tungsten or cerium tungsten. Electrode rods are inevitably burned during use, and trimming the tip of the electrode becomes a must-do job. At present, as far as I know, the factories are still using grinding wheel grinding method. This method is time-consuming and laborious, grinding without the use of vacuum cleaners, workers for a long time