碳化钨对Fe基合金激光熔覆层性能的影响  

Effect of WC on Properties of Fe base Alloy Laser Cladding Layer

作　　者：吴鹏飞 魏昕[1] 苏建修[2] WUPengfei;WEIXin;SUJianxiu(Faculty of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China;Faculty of Electromechanical Engineering,He'nan Institute of Science and Technology,Xinxiang 453003,China)

机构地区：[1]广东工业大学机电工程学院,广东广州510006 [2]河南科技学院机电学院,河南新乡453003

出　　处：《热加工工艺》2024年第14期11-15,共5页Hot Working Technology

基　　金：广东省教育部产学研结合重大科技专项项目(201604016115)。

摘　　要：采用向Fe基合金粉末中加入一定比例碳化钨硬质颗粒的方法,分别对熔覆层的硬度、摩擦系数以及磨痕的磨损形貌进行分析,探索碳化钨对Fe基合金熔覆层使用性能的影响。结果表明,基体的硬度为302 HV,Fe基合金熔覆层的平均硬度为500 HV,而加入5%、10%、15%碳化钨硬质颗粒的Fe基梯度复合熔覆层的平均硬度分别为662、771、806 HV;Fe基合金熔覆层比基体具有更好的耐磨性,随着Fe基合金粉末中添加碳化钨硬质颗粒的比例逐渐增大,熔覆层与对磨副之间的摩擦系数逐渐减小,磨损量逐渐减小,当碳化钨硬质颗粒的比例达到15%时,由于熔覆层内有较多未熔的碳化钨硬质颗粒,反而磨损量增大,犁沟现象严重。By adding a certain proportion of tungsten carbide hard particles to the Fe base alloy powder,the hardness,friction coefficient and wear morphology of the cladding layer were analyzed,and the influence of tungsten carbide on the performance of Fe base alloy cladding layer was explored.The results show that the hardness of the matrix is 302 HV,the average hardness of Fe base alloy cladding is 500 HV,while the average hardness of Fe base gradient composite cladding layer with 5%,10%and 15%tungsten carbide particles is 662,771,806 HV,respectively.Fe base alloy cladding has better wear resistance than matrix.As the proportion of tungsten carbide hard particles added to the Fe base alloy powder increases gradually,the friction coefficient between the cladding layer and the pair of grinding pairs decreases gradually,and the wear amount decreases gradually.When the proportion of tungsten carbide hard particles reaches 15%,the wear amount increases and the ploughing phenomenon is serious because there are more unmelted tungsten carbide hard particles in the cladding layer.

关 键 词：激光熔覆 Fe基WC激光熔覆层 硬度 摩擦系数 磨痕 

分 类 号：TG174.44[金属学及工艺—金属表面处理]