| 搭接量对激光淬火9Cr2钢硬度的影响 |
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| 引用本文： | 曹建刚,李文学,陈宏杰,赵能怀,刘凯.搭接量对激光淬火9Cr2钢硬度的影响[J].金属热处理,2009,34(10). |
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| 作者姓名： | 曹建刚 李文学 陈宏杰 赵能怀 刘凯 |
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| 作者单位： | 1. 内蒙古科技大学,材料与冶金学院,内蒙古,包头,014010
2. 包头市光通激光技术有限公司,内蒙古,包头,014010 |
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| 摘 要： | 用3 kW连续CO2激光器对矫直圈用9Cr2钢,在功率2.2 kW和扫描速度800 mm/m in条件下进行搭接量分别为1、2、3、4 mm的激光表面淬火。用金相显微镜、扫描电子显微镜以及显微硬度计,分析9Cr2钢激光表面淬火后的硬化层分布和剖面硬度均匀性。结果表明,9Cr2钢激光淬火后硬化层分布形状为部分搭接的两月牙形,搭接处硬化层深度随着搭接量的增大而增加,在第二道激光扫描带对第一道激光扫描带热影响区出现硬度下降区域,且随着搭接量的增大硬度下降趋势减弱。
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| 关 键 词： | 激光淬火 硬度 搭接量 |
Influence of overlapping amount on hardness of 9Cr2 steel by laser hardening |
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| CAO Jian-gang,LI Wen-xue,CHEN Hong-jie,ZHAO Neng-huai,LIU Kai.Influence of overlapping amount on hardness of 9Cr2 steel by laser hardening[J].Heat Treatment of Metals,2009,34(10). |
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| Authors: | CAO Jian-gang LI Wen-xue CHEN Hong-jie ZHAO Neng-huai LIU Kai |
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| Affiliation: | 1.Material and Metallurgical School;Inner Mongolia University of Science and Technology;Baotou Inner Mongolia 014010;China;2.Baotou Guangtong Laser Technological Co.Ltd.;China |
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| Abstract: | Laser surface hardening with respective overlapping amount of 1,2,3 and 4 mm on the regulator loop of 9Cr2 steel was carried out with 3 kW CO2 laser machine under the condition of 2.2 kW power and 800 mm/min scanning speed.The distribution of hardened layer and uniformity of sectioned hardness of 9Cr2 steel after the laser surface hardening were analyzed with metalloscope,and microhardness tester.The results show that the hardened layer distribution of 9Cr2 steel presents two crescent-shaped with lap.The de... |
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| Keywords: | laser hardening hardness overlapping amount |
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