【摘要】 采用 2kW的CO2 激光束在W 6Mo5Cr4V2高速钢表面熔覆陶瓷层材料 ,表面会形成三维网络状的陶瓷层 ,并经过淬火、回火热处理。研究结果表明 ,高速钢的高强度、高韧性结合高性能的陶瓷层 ,可形成一个良好的硬化层分布 ,其最高硬度可达 1 887HV ,其耐磨性比常规淬、回火组织高约 (3～ 7)倍。其高温硬度 (红硬性 )及回火稳定性均有所提高更多还原

【Abstract】 The ceramic layers were cladded on W6Mo5Cr4V2 high speed steel surface with a 2kW CO 2 laser,and the net of three dimension ceramic layers are formed.The steel was quenched and tempered The test results indicate that the high strength and toughness of the steel combines with their properties of the ceramic layers forming a well distribution. The highest hardness of the layers can reach 1887HV,and the wear resistances are increased (3～7) times compared to those of the steel in common heat treatment. The high temperature hardness and temper stability are enhanced,too.更多还原