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用激光束进行金属材料表面处理时,必须特别注意束能量、扫描速率、聚焦深度和保护气体的类型。首先肯定四个因素都可以作为束的参数,但是保护气体起着完全不同的若干作用,主要有三个方面:①保护光的部分,防止在处理中烟雾和微粒扩散;②保证束通过热区正确而有效的传输到处理元件上方;③保护正在处理材料的气氛。作者通过活化不锈钢特性的恢复和表面的改性,来论
Special attention must be paid to the beam energy, scan rate, depth of focus and type of shielding gas when laser beam is used for the surface treatment of metallic materials. First of all, it is affirmed that all four factors can be used as parameters of the beam. However, the protective gas plays a number of totally different roles. There are mainly three aspects: ① Protect the light and prevent the diffusion of smoke and particles in the process; ② Ensure that the beam passes the hot zone correctly While the effective transmission to the top of the processing element; ③ protection is processing the atmosphere of the material. The authors discuss the activation of stainless steel properties and the surface modification