不锈钢激光熔覆镍基涂层工艺优化仿真  

Optimization Simulation of Stainless Steel Laser Cladding Nickel-based Coating Process

作　　者：王冰涛 熊宗慧[1] 孙文磊[1] Wang Bingtao;Xiong Zonghui;Sun Wenlei(School of Mechnical Engineering,Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学机械工程学院,乌鲁木齐830047

出　　处：《煤矿机械》2022年第12期94-97,共4页Coal Mine Machinery

基　　金：克拉玛依市重大项目(2018ZD002B)。

摘　　要：为提高不锈钢表面激光熔覆镍基涂层效率、快速确定适宜工艺参数,采用Visual-Environment有限元软件,对304不锈钢熔覆Ni35合金过程进行模拟,就激光功率、扫描速度、光斑半径对熔池的峰值温度、稀释率、成形系数的影响进行仿真研究,得出最优的工艺参数为激光功率900 W,扫描速度6 mm/s,光斑半径1 mm、1.1 mm,且在半径1 mm下进行了实验验证。结果显示,采用优化所得工艺参数进行实验得到的试样截面与仿真结果高度吻合,且该参数下组织致密,因此可采用数值仿真方法来获取实验前的工艺参数,且能够缩短实验周期、提高实验效率。In order to improve the efficiency of laser cladding Nickel-based coating on stainless steel surface and quickly determine the suitable process parameters, Visual-Environment finite element software was used to simulate the process of 304 stainless steel coating Ni35 alloy. The simulation study was conducted on the effects of laser power, scanning speed and spot radius on the peak temperature, dilution rate and forming coefficient of molten pool. The optimal process parameters were obtained as follows:laser power 900 W, scanning speed 6 mm/s, spot radius 1 mm and 1.1 mm, and the experimental verification was carried out under the radius of 1 mm. The results show that the cross section of the sample obtained by the actual experiment with the optimized process parameters is highly consistent with the simulation results, and the microstructure is dense under this parameter. Therefore, the numerical simulation method can be used to obtain the process parameters before the experiment, and can shorten the experimental period and improve the experimental efficiency.

关 键 词：激光熔覆 工艺参数 优化仿真 不锈钢 

分 类 号：TG456.7[金属学及工艺—焊接]