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铜、鋁、不銹钢、耐热鋼及难熔金属等材料,有的导热性能好,有的熔点高,或者氧化后生成高熔点氧化物及高粘度熔渣,不能用一般氧-乙炔焰进行切割。过去在生产中多采用钻、刨、銑、锯等机械方法,或电弧切割方法进行下料,材料浪費而且生产率很低。上海电焊机厂經过数百次試驗,在1961年試制成功了KL-1-1及KM-1手动与自动等离子切割机。由于这种切割设备能够产生万度以上的高溫,所以能够切割各种金属。我們曾試切割过銅及其合金、鋁及其合金、不銹钢、耐热鋼、碳素鋼、钼、锆、鎢、灰口鉄、白口鈇等金属,都能得到良好的切口表面,而且生产率很高,为各种金属的下料找到了新的方法,并将会得到越来越广泛的应用。現就等离子切割机的結构,如伺能够产生万度以上的高温,設备的控制和使用及如何解决使用中出现的問題等进行討論。
Copper, aluminum, stainless steel, heat-resistant steel and refractory metals and other materials, and some good thermal conductivity, and some high melting point, or generated after oxidation of high melting point oxides and high viscosity slag, can not be general oxygen - acetylene flame cutting . In the past in the production of more use of drilling, planing, milling, sawing and other mechanical methods, or cutting arc cutting, material waste and low productivity. Shanghai Electric Welding Machine Factory after hundreds of trials, in 1961 successful trial KL-1-1 and KM-1 manual and automatic plasma cutting machine. Since this type of cutting equipment is capable of producing temperatures in the tens of thousands of degrees or more, it is possible to cut various metals. We have tried cutting the copper and its alloys, aluminum and its alloys, stainless steel, heat-resistant steel, carbon steel, molybdenum, zirconium, tungsten, gray mouth 鉄, white mouth 鈇 and other metals, can get a good incision surface, and High productivity, for a variety of metal cutting found new ways, and will get more and more widely used. Plasma cutting machine is now on the structure, such as servo can produce over ten thousand degrees high temperature, the control and use of equipment and how to solve the problems arising in use are discussed.