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几十微米到几个毫米厚的金属的氩弧焊,现今在很多工业部门中的应用越来越广泛。因此,要求限制热影响区的大小,保证焊缝金属致密等等。-4型和-5型晶体管电源能解决薄板金属之电弧焊接问题。这种晶体管电源的工作原理就是利用与弧隙串联的大功率晶体管组来稳定和控制电弧电流。这种晶体管组的存在,不仅可以平滑、无惰性地调节焊接电流,而且可以保证焊接电流稳定,也就是能保证焊接电流不会由于网路电压的波动和电弧电压的变化而变化。因此,在用小电流烧焊时,可以得到高质量的焊接接头和稳定的电弧。在脉冲电弧焊时,由于晶体管通断迅速,所以脉冲呈方形波;脉冲和休止的时间可以单独调节,调节范围为
A few tens of microns to a few millimeters thick metal welding, in many industrial sectors today more and more widely used. Therefore, it is required to limit the size of the heat-affected zone, to ensure that the weld metal is dense and so on. -4 and -5 transistor power supply solves the problem of sheet metal arc welding. The working principle of this transistor power supply is the use of high-power transistor group in series with the arc gap to stabilize and control the arc current. The existence of such a transistor group can not only regulate the welding current smoothly and without any inertia, but also ensure that the welding current is stable, that is, it can ensure that the welding current can not be changed due to the fluctuation of the network voltage and the variation of the arc voltage. Therefore, when welding with a small current, it is possible to obtain a high-quality welded joint and a stable arc. In the pulse arc welding, due to the transistor on-off rapidly, so the pulse was a square wave; pulse and rest time can be adjusted separately, the adjustment range is