激光熔敷Ni基WC合金

LASER COATING OF Ni BASED-WCALLOY ON 15MnV STEEL

为强化工矿用鼓风机叶片性能,在15MnV 钢表面火焰喷涂 Ni 基 WC 合金,而后采用激光熔敷工艺,控制激光辐照条件和熔化深度,获得了细密的敷层组织。用近代测试手段对熔敷层的组织、结构以及敷层的性能进行了分析研究。采用后续热处理使激光熔敷层组织分布趋于合理化,为激光熔敷这一新工艺的实用化奠定了一定的基础,并为提高风机叶片的使用寿命开辟了一条新途径。

In order to strengthen the air-blower blade in the mining industry,a newprocess of Ni base-WC alloy coated on 15MnV steel by flame operating followed by lasercoating was investigated.The fine microstructure of alloy layer on the steel is determined bycontrolling the laser treating parameters.Follow-up heat treatment was used to improvethe microstructure of laser coated layer.