机械液压杆的表面喷涂与涂层耐磨性能研究  

Study on Surface Spraying Process and Wear Resistance of Coating on Mechanical Hydraulic Rod

作　　者：赵春[1] 张顺[2] 

机构地区：[1]内蒙古机电职业技术学院机电工程系,内蒙古呼和浩特010051 [2]内蒙古机电职业技术学院冶金与材料工程系,内蒙古呼和浩特010051

出　　处：《铸造技术》2016年第12期2594-2596,共3页Foundry Technology

摘　　要：以低碳钢丝+10%WC粉末为原料,在机械液压杆表面进行了电弧喷涂+氩弧重熔处理,研究了电弧喷涂涂层和氩弧重熔涂层的显微组织、物相组成以及涂层的硬度和耐磨形貌。结果表明,经过电弧喷涂处理后的涂层由白色的铁素体和黑色的珠光体组成,局部区域可见棱角状和条状的WC白亮色区域。电弧喷涂涂层和氩弧重熔处理后的涂层的物相都由α-Fe、WC和W_2C组成。机械液压杆熔覆涂层和过渡区的显微硬度都高于基材。随着磨损时间的增加,机械液压杆表面涂层的磨损量不断增加,磨损机制主要为以粘着磨损为主带有微切削。Taking low carbon steel wire and 10%WC powder as raw material, the surface of the mechanical hydraulic rod was treated by arc spraying and argon arc remelting. The effect of arc spraying and argon arc remelting process on the microstructure, phase component and hardness of the coatings was studied. The results show that the coatings treated by arc spraying shows white ferrite and black pearlite, and local area has strip WC bright white area. Arc spraying coating and argon arc remelting coatings all are composed of α-Fe, WC and W2C phase, and the micro-hardness of cladding coating and the transition zone are higher than that of the base material. With the increase of wear time, the wear volume of the surface coating increases. The main wear mechanism is adhesive wear with micro cutting.

关 键 词：机械液压杆 电弧喷涂 氩弧重熔 微观组织 耐磨性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]