35^#钢激光宽带淬火研究  

Quenching of 35# Steel With A Wide - band CO2 Laser Beam

作　　者：郭洪[1] 杜利平[1] 雒江涛[1] 梁二军[1] 

机构地区：[1]郑州大学河南省激光应用技术重点实验室,郑州450052

出　　处：《应用激光》2001年第4期229-232,共4页Applied Laser

基　　金：河南省高校创新工程基金;河南省杰出人才创新基金资助课题

摘　　要：利用扫描激光束对 35 # 钢材料进行了宽带激光淬火 ,在 3.0～ 3.3k W激光功率下 ,获得单道淬硬带宽15 mm,淬硬层深 0 .5 3mm。给出了不同激光功率条件下淬火区硬度沿淬硬层深的变化曲线 ,淬硬层硬度分布基本均匀 ,平均硬度约为 5 5 4～ 675 Hv,与基体硬度比较提高了 2 .3～ 2 .5倍。显微组织结构分析显示淬硬层沿层深方向可分为完全淬硬层、过渡层和高温回火区三个区域。Wideband laser quenching of 35 # steel was carried out with an oscillating laser beam. A hardened bandwidth of 15mm and depth of 0.53mm were obtained with laser power of 3.0～3.3kW. The dependence of the microhardness on the depth in the hardened layer was measured. It shows that the microhardness ranges from 554 to 675Hv, which is about 2.3～ 2.5 times as high as that of the untreated area. The microstructure study indicates that the laser quenched layer can be divided into complete hardende layer, transition layer and hightemperature tempered layer,respectively.

关 键 词：宽带激光淬火 35^#钢 优化参数 

分 类 号：TG156.3[金属学及工艺—热处理]