近年来 ,我国进口了大量的焊接设备。引进松下技术生产的ＫＲ系列ＣＯ2 气体保护焊机就是其中的一例。由于该设备性能好、质量稳定 ,且电路上具有无遥控电缆控制、霍尔元件电流取样、恒流源送丝驱动等特点 ,是ＣＯ2 焊接操作的优选机种 ,在国内有相当多的用户。为了便于用户维 In recent years, China imported a large number of welding equipment. The introduction of Panasonic technology to produce KR Series CO2 gas shielded welding machine is one example. Because of its good performance, stable quality, and no remote control of the cable on the circuit, the Hall element current sampling, constant current source wire drive and so on, it is the preferred model of CO2 welding operation and has a considerable number of users in China. In order to facilitate the user dimension