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近年来,在机械零部件热处理领域开始利用激光及热等离子体的表面改性技术,其亮点是能有效地改善零部件的耐磨性、耐腐蚀性及耐高温氧化性,并可减少摩擦、摩损,提高综合机械性能。这类技术可广泛应用于汽车及铁道机车车辆、冶金等多种工业部门,在工程上倍受关注。文章介绍了上述热处理技术的原理、应用实例及目的;也描述了利用激光、热等离子体的复合喷涂工艺以及独特的表面接合技术的工艺流程和应用案例。
In recent years, in the field of mechanical parts heat treatment using laser and thermal plasma surface modification technology, the bright spot is that it can effectively improve the wear resistance, corrosion resistance and high temperature oxidation resistance, and can reduce friction, Wear, improve the overall mechanical properties. Such technologies can be widely used in a variety of industrial sectors, such as automobiles and railway locomotives, metallurgy, etc., attracting much attention in engineering. The paper introduces the principle, application and purpose of the above heat treatment technology. It also describes the process flow and application cases of the composite spray coating process using laser and thermal plasma as well as the unique surface bonding technology.