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激光热处理是七十年代初期首先在美国发展起来的,到目前为止,已由激光相变硬化发展到复层合金化和热喷镀层的激光重熔固化等工艺,其中激光相变硬化工艺已成功地应用于生产。一、激光相变硬化新工艺在工业中的应用激光相变硬化新工艺最重要的优点是淬硬部位的可控性,这是其他热处理途径所难以解决的。它的特点是: (1)加热速度快,在百分之几甚至千分之几秒内就能使局部温度升高到淬火所需的温度。此外,可借助于金属的热传导使金属表层快速自行淬火,这种淬
Laser heat treatment was first developed in the United States in the early seventies. So far, laser phase-change hardening has been successfully developed by laser phase-change alloying and laser remelting and solidification of thermal sprayed coatings Used in production. First, the application of laser phase-change hardening new technology in industry The most important advantage of laser phase-change hardening new technology is the controllability of hardened parts, which is difficult to solve by other heat treatment methods. Its features are: (1) heating speed, in a few percent or even a few seconds can make the local temperature rise to the required quenching temperature. In addition, the metal surface can be self-quenched by means of the heat conduction of the metal. Such quenching