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一、序言最近,利用激光和电子束等高能量密度热源进行钢铁表面淬火的技术得到广泛的研究与开发。它们都是无污染且高效率的表而淬火方法。但其所用的热源发生装置价格高,因而成本也高,同时要求熟练的操作技能,因此,它们的普遍应用受到限制。等离子弧是能量密度仅次于激光和电子束的热源。由于热源装置便宜、成本低、操作容易,在焊接、切割、喷镀等方面已经得到广泛应用。一般认为等离子弧的能量密度
I. Preface Recently, the technology of surface hardening steel using high energy density heat sources such as laser and electron beam has been extensively researched and developed. They are non-polluting and efficient table quenching methods. However, their use of heat generating devices is expensive and thus costly, while requiring skilled operation skills, so their general application is limited. Plasma arcs are the heat source of energy density second only to lasers and electron beams. As the heat source device is cheap, low cost, easy to operate, has been widely used in welding, cutting, spraying and so on. Generally considered the plasma arc energy density