摘要
采用正交试验研究了42CrMo合金表面单道轨迹激光熔覆的Stellite6涂层,分析了激光功率、扫描速度、送粉速率、光斑直径对熔覆层稀释率和显微硬度的影响及主要影响因素之间的交互作用。结果表明,激光功率对熔覆层稀释率的影响最大,而扫描速度对熔覆层显微硬度的影响最大。综合熔覆层稀释率和显微硬度的评价得到的最优工艺参数组合为激光功率1100W,扫描速度8mm·s^(-1),送粉速率1.2～1.4rad·min^(-1),光斑直径3.7mm。
The orthogonal test of laser cladding of Stellite6 coating on the 42 CrMo alloy surface with single-pass is carried out and the influences of laser power,scanning speed,powder feeding rate and spot diameter on the dilution rate and microhardness of cladding layers as well as the interactive action among the main influencing factors are analyzed.The results show that the laser power has the most significant influence on the dilution rate of cladding layer,while the scanning speed has the most obvious influence on the microhardness of cladding layer.The optimal process parameter combination is laser power of 1100 W,scanning speed of 8 mm·s-1,powder feeding rate of 1.2-1.4 rad·min-1 and spot diameter of 3.7 mm from the comprehensive analysis of the dilution rate and microhardness of cladding layers.
作者
程伟
武美萍
唐又红
王航
叶秀
Cheng Wei;Wu Meiping;Tang Youhong;Wang Hang;Ye Xiu(Jiangsu Provincial Key Laboratory of Advanced Food Manufacturing Equipment and Technology,Jiangnan University,Wuxi,Jiangsu 214122,China;Suzhou Entry-Exit Inspection and Quarantine Bureau,Suzhou,Jiangsu 215021,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2019年第4期158-165,共8页
Laser & Optoelectronics Progress
基金
装备预研教育部联合基金(6141A0221)
江苏出入境检验检疫局科技计划项目(2018KJ04)
关键词
激光技术
激光熔覆
单道轨迹
正交试验
稀释率
显微硬度
laser technique
laser cladding
single-pass
orthogonal test
dilution rate
microhardness
