高速钢表面纳秒激光熔覆高硬度涂层的研究  

Research on nanosecond laser cladding of high hardness coatings on surface of high-speed steel

作　　者：刘壮[1] 庞祥哲 LIU Zhuang;PANG Xiangzhe(College of Light Industry,Harbin University of Commerce,Harbin 150028,China)

机构地区：[1]哈尔滨商业大学轻工学院,哈尔滨150028

出　　处：《哈尔滨商业大学学报(自然科学版)》2025年第2期199-206,共8页Journal of Harbin University of Commerce:Natural Sciences Edition

摘　　要：通过ANSYS仿真软件分析高速钢表面纳秒激光熔覆钴基材料,讨论激光工艺参数与熔覆层温度的关系,以期获得纳秒激光熔覆钴基材料的工艺规律,得出关键加工参数范围,为实际熔覆实验提供数据参考.根据仿真分析结果,当激光功率低于21 W时,基体热量积累不足,达不到熔融点,钴基材料亦无法完全熔覆;当激光功率达到27 W以上时,基体温度过热,会导致基体过分熔化,熔覆效果不佳;当激光扫描速度超过6 mm/s时,基体温度不足,导致无法形成熔池;扫描速度小于4 mm/s时,致基体温度过热.故选取实验参数范围为:激光功率21~27 W,激光扫描速度4~6 mm/s.ANSYS simulation software was used to analyze the nanosecond laser cladding of cobalt-based materials on the surface of high-speed steel.The relationship between laser process parameters and cladding layer temperature was discussed to obtain the process rules of nanosecond laser cladding of cobalt-based materials and determine the key processing parameter range,thereby providing data references for actual cladding experiments.According to the simulation analysis results,when the laser power was lower than 21 W,the substrate heat accumulation was insufficient to reach the melting point,and the cobalt-based material could not be completely clad.When the laser power reached more than 27 W,the substrate temperature was overheated,which would cause excessive melting of the substrate and result in poor cladding effects.When the laser scanning speed exceeded 6 mm/s,the substrate temperature became insufficient,preventing the formation of a molten pool.Conversely,when the scanning speed was less than 4 mm/s,the substrate temperature was overheated.Consequently,the experimental parameter range was selected as follows:laser power 21~27 W and laser scanning speed 4~6 mm/s.

关 键 词：高速钢 激光熔覆 仿真模拟 钴基材料 高斯热源 ANSYS 

分 类 号：TG174.4[金属学及工艺—金属表面处理]