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一、等离子切割技术的发展概况等离子切割技术在国内外机械、造船等行业中,已成为热切割技术领域中的一项先进技术,且已用于生产。但是,就其离子气体而言,仍然是众所注目的课题。最初的等离子弧切割,是采用工业纯氩做为等离子气体。但由于氩气昂贵而且离子弧较短、携热性较差等工艺上的不足,所以很快被氮+氢或氢+氩等混合气体所代替。由于氢的加入改善了等离子弧的工艺性能,
First, the plasma cutting technology development Overview Plasma cutting technology at home and abroad machinery, shipbuilding and other industries, has become an area of thermal cutting technology in an advanced technology, and has been used in production. However, its ionic gas remains a key issue. The first plasma arc cutting, the use of industrial pure argon plasma gas. However, because argon is expensive and the ion arc is shorter, less portable and so on the process of inadequate, it is quickly replaced by nitrogen + hydrogen or hydrogen + argon mixed gas. Due to the addition of hydrogen to improve the plasma arc process performance,