摘要
利用2KW横流CO_2激光器对3Cr13计数器棘轮进行了激光淬火研究,结合零件的原始加工次序,比较了两种次序激光淬火投弹器棘轮的工艺,结果表明:经两种方法激光处理后棘轮的显微硬度均达到了该零件技术指标的要求,显微硬度为HV412∽550。激光处理3Cr13不锈钢硬化层的深度为1.0mm,表面最高硬度HV680,比普通淬火高约HV160。激光处理后齿面的光洁度不变,达(Ra0.4∽0.3μm),激光淬火的变形为2.5μm左右。激光淬火区的显微组织为细小均匀的隐晶马氏体。
The CO2 laser quenching treatment was used to study the surface modification of a gear counter. In the present investigation, the two hardening the counter gear approaches were compared by the CO2 laser. It was found that the two approaches of laser quenching were effective to enhance the surface microhardness to HV412 -HV550 . Meanwhile, the microhardness distribution was measured . After the laser heat treatment ,the depth of laser hardening was 1. 0mm, the highest microhardness HV680 was higher HV160 than the common oil quenching. The value of surface roughness before quenching was not found to change with comparison to that after quenching treatment. It is shown that the distortion of surface upon laser quenching was remarkably induced to 2. 5μm. In addition, the microstructure of 3Cr13 stainless steel after laser quenching and high frequency induction quenching was observed. After laser quenching, the fine martensite structure was obtained.
出处
《应用激光》
CSCD
北大核心
2002年第3期297-299,共3页
Applied Laser
