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本文研究了由输出功率1KW CO_2激光对S45C和SCM435试样淬火时激光束的扫描速度及ab值对淬火硬化部形状、组织、硬度等的影响。同时,研究了滑动磨耗性,得出了以下的结果:1.加快激光束扫描速度,将使硬化部的宽度和深度减少,淬火部面积增加。2.淬火硬化部组织由单纯马氏体完全淬火层、母层组织搭界的非完全淬火层以及它们之间共存的马氏体和微细珠光体共存层组成。
In this paper, the effects of laser beam scanning speed and ab value on the shape, microstructure and hardness of quench hardened parts were investigated by quenching S45C and SCM435 samples with 1KW CO2 laser. At the same time, the sliding wear was studied and the following results were obtained: 1. Accelerating the scanning speed of the laser beam will reduce the width and depth of the hardened part and increase the area of the hardened part. 2. Quenching hardened tissue consists of a complete martensite martensite completely hardened layer, the parent organization of non-fully hardened layer and the coexistence of martensite and fine pearlite coexistence layer.