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工频方波交流弧焊电源,随着SCR—IC控制技术的发展,国外已形成产品。本文作者研制的FJD—160型工频方波交流弧焊电源,实现交流和直流输出,可用作交流TIG焊或采用碱性焊条施焊,获得电弧稳定,无磁偏吹,飞溅小等优点。文内着重讨论了工频方波交流弧焊电源中,有关方波的获得、恒流特性的形成、总电流、电流比的调节,以及电感量对最小连续电感电流、波形系数和电流比(β)调节范围的影响等。
Power frequency square wave AC arc welding power supply, with the SCR-IC control technology, has formed a foreign product. The FJD-160 power frequency square-wave AC arc welding power source developed by the author achieves AC and DC output. It can be used as AC TIG welding or welding with alkaline welding wire to obtain the advantages of stable arc, no magnetic blow-off and small spatter . The paper focuses on the power frequency square wave AC arc welding power supply, the square wave, the formation of constant current characteristics, the total current and current ratio adjustment, as well as the inductance of the minimum continuous inductor current, the waveform coefficient and the current ratio β) the influence of adjustment range and the like.