环形零件局部激光表面淬火
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摘要
利用半导体激光宽带对环形零件局部进行表面淬火处理,并利用蔡司光学显微镜和HXD-1000TMC型维氏硬度计对处理后的零件进行显微组织观察和硬度分析。结果表明,通过高功率、多次扫描、辅助气冷的方法获得优良的表面改性层;当激光功率为1100 W,扫描速度4.5 mm/s,经三次激光宽带扫描处理后,硬化层深度> 500μm,表面硬度> 600 HV0.1。
The local surface of an aerospace typicalannular part was treated by semiconductor laser quenching,the microstructure and hardness were analyzed by ZEISS optical microscope and HXD-1000 TMC Vickers hardness tester.The results show that excellent surface modification layer can be obtained by high power,multiple scan and auxiliary air cooling.After 3 wide-band laser scanning with laser power of 1100 W and scanning speed of 4.5 mm/s,the hardened layer depth is more than 500 μm,and the surface hardness is higher than 600 HV0.1.
The local surface of an aerospace typicalannular part was treated by semiconductor laser quenching,the microstructure and hardness were analyzed by ZEISS optical microscope and HXD-1000 TMC Vickers hardness tester.The results show that excellent surface modification layer can be obtained by high power,multiple scan and auxiliary air cooling.After 3 wide-band laser scanning with laser power of 1100 W and scanning speed of 4.5 mm/s,the hardened layer depth is more than 500 μm,and the surface hardness is higher than 600 HV0.1.
引文
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[2]段松,秦茶,李碧波.激光淬火处理后半高速钢的组织及性能[J].金属热处理,2015,40(9):76-78.Duan Song,Qin Cha,Li Bibo.Microstructure and properties of semiHSS treated by laser quenching[J].Heat Treatment of Metals,2015,40(9):76-78.