单向送粉双向扫描激光熔覆工艺防止裂纹的试验研究  

Cracking Control in Laser Cladding Process with Unidirectional Powder Feeding and Double Scanning

作　　者：宋光明[1] 吴钢[1] 黄婉娟[1] 

机构地区：[1]上海海事大学机械系,上海200135

出　　处：《金属热处理》2005年第5期26-28,共3页Heat Treatment of Metals

基　　金：国防科技重点实验室基金项目(51489040104JB1101)

摘　　要：在无预热、后处理等条件下,利用CO2激光器在45钢表面进行了Ni60合金粉末熔覆的试验研究。结果表明,采用单向送粉双向扫描工艺进行单道熔覆或多道搭接熔覆,皆可有效地避免熔覆层裂纹,并能提高熔覆层表面平整度。The experimental study of cladding with the Ni60 alloy powder on the surface of 45 steel using the CO2 laser under the condition of no preheating and post-treatment was studied. The results show that using the process of unidirectional powder feeding and two-way scanning for single-pass cladding or multipass lap cladding can effectively avoid the cracking of the coating and improve the smoothness of the coating surface.

关 键 词：激光熔覆 NI60合金 熔覆层裂纹 熔覆工艺 

分 类 号：TG156.99[金属学及工艺—热处理] TG157[金属学及工艺—金属学]