激光对金属材料表面处理是近十年发展起来的一种新技术。比起激光焊接、切割、打孔以及激光测量等技术,它的历史较短,因而,从理论到实践都有待进一步探讨。激光对金属表面的热处理与常规热处理方法相比较有以下优点:1)加热快,工件变形小,处理后表面清洁,不需要重新加工和修磨,可以在工件精加工以后作为最后一道工序;2)能对任意复杂形状的工件或工件的局 Laser surface treatment of metal is a new technology developed in the past decade. Compared with the laser welding, cutting, drilling and laser measurement technology, its history is relatively short, therefore, from theory to practice needs to be further explored. Laser heat treatment of metal surfaces compared with the conventional heat treatment method has the following advantages: 1) fast heating, the workpiece deformation is small, clean the surface after treatment, no need to re-processing and grinding, the workpiece can be finished after finishing as the last process; ) Can work on any complex shape of the workpiece or workpiece