利用光纤激光器在不锈钢表面激光熔覆镍基合金,基于同轴送粉激光快速成型工艺建立了熔池温度场瞬态模型,对工艺参数在材料熔池形态和内部温度场的数值模拟结果表明,在所述的试验条件下,扫描速度和送粉率对熔覆层的形貌影响显著,建立的数值模拟结果与试验结果有较好的吻合,数值模拟模型可为熔覆工艺参数提供参考。 The temperature field of molten pool was established by laser cladding nickel - base alloy on stainless steel surface with fiber laser. The numerical simulation of process parameters in the shape of molten pool and internal temperature field was carried out. Under the above experimental conditions, the effect of scanning speed and powder feeding rate on the morphology of the cladding layer is significant. The established numerical simulation results are in good agreement with the experimental results. The numerical simulation model provides a reference for the cladding parameters.