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ПШ-5半自动焊机的換向开关(控制焊絲上下的机构),都是安装在控制箱上,在焊把上則另有一个啟动开关,但它不能使焊絲換向,要将焊絲換向一定要在控制箱上来操作。焊接过程中,常常由于焊工沒有掌握好焊把,或焊接規范还沒有調节好时,即开始引弧,焊絲馬上就頂住工件。电弧没有燃燒起来,焊絲却仍然給送,就使焊絲伸出太長。另外在調节压紧輪的压力时,一定要试验焊絲给送得是否正常,因此也常使焊絲伸出焊嘴过長。在这种情况下,当然应該把焊絲倒送回去,但有的工作物較長,而其焊縫又很分散,如超重机的大梁,有
The commutator switch of the II-5 semi-automatic welder (the mechanism that controls the wire up and down) is mounted on the control box with another start switch on the handle, but it can not reverse the wire, Be sure to operate the control box. Welding process, often because the welder did not grasp the welding rod, or welding norms have not been adjusted, that arc start, welding wire immediately withstand the workpiece. The arc did not burn up, but the wire was still being fed, causing the wire to extend too long. In addition, when adjusting the pressure of the pressure wheel, it is necessary to test whether the wire is fed properly or not, and therefore the welding wire often extends too far beyond the welding tip. In this case, of course, the wire should be dumped back, but some work longer, and the weld is very scattered, such as the beam of a heavy machine, there