磨损零件的激光熔覆修复实验研究  

Experimental Research on Repairing the Wearing Parts by Use of Laser Cladding

作　　者：熊忠琪[1] 邓琦林[1] 周春燕[1] 高宾[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《电加工与模具》2009年第1期60-63,共4页Electromachining & Mould

基　　金：国家自然科学基金资助项目(50675136)

摘　　要：研究采用激光熔覆方法修复磨损的零件,将2Cr12基体材料与激光熔覆后的F321合金进行磨损对比实验的结果表明,激光熔覆后的F321合金的耐磨性是基体材料2Cr12的5倍,被修复的2Cr12零件其耐磨性大大提高。在较软的合金粉末中添加硬质相如WC等陶瓷颗粒时,可大大提高软性合金粉末的耐磨性。激光熔覆由软合金和硬质颗粒组成的复合粉末,能使硬质颗粒分散均匀。激光熔覆316L不锈钢熔覆层的实验表明,熔覆层内的硬度分布较均匀。Research on repairing the wearing parts by use of laser cladding. When we compare 2Cr12-matrix with laser clothe F321 alloy in wearing experiment, we can know that wear resistance of laser clothe F32t alloy is 5 times than that of 2Cr12-matrix. Using F321 alloy powder in laser cladding to repair worn 2Cr12 parts will raise wear resistance of it greatly. When hard phases as WC or other ceramics particles are added into relatively softer alloy powder, they will raise wear resistance of soft alloy powder greatly. Using composite powder formed with soft alloy and hard particles in laser cladding can make hard particles well-distributed. Experiment of laser clothe 316L acid resistant steel coating tells us that distribution of hardness in the laser cladding layer is well distributed.

关 键 词：磨损 激光熔覆 修复 

分 类 号：TG456.7[金属学及工艺—焊接]