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一前言等离子弧,在国外是于一九五五年在机械制造业中,比较成功地应用于切割,以后则逐渐应用于焊接、堆焊、喷镀等等方面。在我国,这项新技术还是六十年代才开始发展起来的,但发展比较迅速。近年来,等离于弧切割技术在机械制造工业中已有比较广泛的应用;等离子弧焊接技术,虽然也有一定的发展——如七十年代初,辽宁、上海等地已在10毫米以下厚度的不锈钢、普低钢焊接生产上取得了一些成功的经验,近年更在铜合金拼板及结合脉冲电源的应用上开展了一些研究工作,但总的看来还不够十分成熟。我厂由于生产上的需要,有较大数量的紫
A foreword Plasma arc, in foreign countries was in 1955 in the machinery manufacturing industry, more successfully applied to cutting, then gradually applied to welding, surfacing, spraying and so on. In our country, this new technology started to develop only in the 1960s, but it developed rapidly. In recent years, plasma arc cutting technology has been widely used in the machinery manufacturing industry; plasma arc welding technology, although there are some developments - such as the early 1970s, Liaoning, Shanghai and other places have been less than 10 mm in thickness Of stainless steel, general low-grade steel welding has made some successful experience in recent years more in the copper alloy puzzle and the application of pulse power to carry out some research work, but in general it is not yet mature enough. I plant due to the production needs, there is a larger number of purple