摘要
采用不同的激光熔敷工艺参数,在9W18Cr4V高速钢刀具表面制备了氮铝钛涂层,并对涂层的显微组织、高温硬度和耐磨损性能进行了测试与分析。结果表明,随激光功率的增大,涂层的平均晶粒尺寸先基本不变后增大、高温硬度先增大后减小、耐磨损性能先提高后下降;随激光扫描速度的增快,涂层的平均晶粒尺寸先减小后基本不变、高温硬度先增大后减小、耐磨损性能先提高后下降。激光功率优选为3k W、扫描速度优选为5mm/s。
The Ti Al N coatings were made on the surface of 9W18Cr4 V high speed steel cutting tool by laser cladding with different process parameters. And the microstructure,hardness and wear resistance at high temperature were tested and analyzed. The results show that average grain size stained the basic invariants firstly and then increased,hardness and wear resistance at high temperature increased firstly and then decreased with the increase of laser efficiency. Average grain size decreased firstly and then stained the basic invariants,hardness and wear resistance at high temperature increased firstly and then decreased with the increase of laser efficiency with the increase of laser scanning speed. Laser efficiency and scanning speed were optimized by 3k W and 5mm / s,respectively.
出处
《工具技术》
北大核心
2016年第2期28-31,共4页
Tool Engineering
关键词
激光熔敷
工艺参数
氮铝钛涂层
刀具
高温硬度
耐磨损性能
laser cladding
process parameter
TiAlN coating
cutting tool
hardness at high temperature
wear re sistance
作者简介
杨晓雪，讲师，北京工业职业技术学院机电系，100042北京市
