本文研究了激光工艺参数对镀Cr中碳低合金钢激光合金化熔池形状系数及成分均匀性的影响。实验结果表明,熔池成分均匀性取决于其截面形状系数,后者是光束功率密度和交互作用时间的函数。在功率密度一定时,形状系数与交互作用时间成线性关系。当形状系数为1.6—3.0时,可以获得成分均匀的熔池。
The effect of the laser processing parameters on the composition unifor-mity and shape coefficient of fusion zone with laser surface alloyed Cr plated onmedium carbon low alloy steel has been studied. It was found that the compositionuniformity depends on the shape coefficient of fusion zone, and the later is a func-tion of both power density and interaction time. If the power density is certain va-lue, it is proportional directly to the interaction time. A complete uniformal moltenpool can be gotten, when the shape coefficient is between 1.6 and 3.0.
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