送粉激光熔敷耐磨涂层制备工艺与组织结构

Technique and microstructure of anti-wear coating by auto-feeding laser cladding

采用20%WC作为镍基自熔合金的掺杂增强相,研究了该复合材料在送粉激光熔敷工艺条件下的熔敷层显微组织、显微硬度与熔敷工艺规范间关系,得出了在实验条件下的优化工艺参数:激光功率为2.5kW(光斑离焦量60mm);扫描速度为2.4mm/s;送粉量为3.0g/min.

Twenty percent of WC was adulterated to Ni base automelt alloy for swelling antiwear properties of coating, and the relations between microstructure or microharden and principle of autofeeding laser cladding are studied. The optimum parameters experiment of laser cladding are put forward, which are laser power 2.5 kW, scan velocity 2.4 mm/s, and feeding powder 3.0 g/min.