激光熔覆过程中的粉、气、光耦合温度场  

Temperature Distribution of Powder-gas-optical Coupling temperature field in Laser Cladding Processes

作　　者：许明三 周春辉[1,2] 张正 曾寿金 XU Mingsan;ZHOU Chunhui;ZHANG Zheng;ZENG Shoujin(School of Mechanical & Automotive Engineering, Fujian University of Technology,Fuzhou,350118;Advanced Manufacturing Productivity Promotion Center,Fujian University of Technology,Fuzhou,350118)

机构地区：[1]福建工程学院机械与汽车工程学院,福州350118 [2]福建工程学院先进制造生产力促进中心,福州350118

出　　处：《中国机械工程》2022年第1期70-77,共8页China Mechanical Engineering

基　　金：国家自然科学基金(51575110);福建省自然科学基金(2020J01872,2021J011052)。

摘　　要：激光熔覆过程中,粉末到达基体表面前存在粉、气、光的耦合温度场。建立了送粉过程中粉、气、光耦合温度场的三维数值模型。耦合温度场的研究结果表明:激光功率是影响耦合温度的主要因素,载粉气是影响耦合温度场的主要因素;温度场的红外测温仪实测结果与仿真结果基本相符。There was a powder-gas-light coupling temperature field before powders reachesd substrate surfaces in laser cladding processes.A 3D numerical model of the powder-gas-light coupling temperature field during the feeding processes was established.Research results of the coupling temperature field show that laser power is the main factor of coupling temperature,and the powder carrier gas is the main factor of coupling temperature field;the coupling temperature field of infrared thermometer is basically consistent with simulated temperature field.

关 键 词：激光熔覆 温度场 数值模拟 耦合 金属粉末 

分 类 号：TN249[电子电信—物理电子学]