A COMPREHENSIVE MODEL OF LASER CLADDING BY POWDER FEEDING

【摘要】 <正> A novel model was presented to predict the evolutionary development of cladding layer, and a method based on Lambert-Beer theorem and Mie’s theory was adopted to treat the interaction between powder stream and laser beam. By using the continuum model and enthalpy-porosity method, the fluid flow and heat transfer in solid-liquid phase change system were simulated. The commercial software PHOENICS, to which several modules were appended, was used to accomplish the simulation. Numerical computation was performed for Stellite 6 cladding on steel, the obtained results are coincident with those measured in experiment basically.更多还原

【Abstract】 A novel model was presented to predict the evolutionary development of cladding layer, and a method based on Lambert-Beer theorem and Mie’s theory was adopted to treat the interaction between powder stream and laser beam. By using the continuum model and enthalpy-porosity method, the fluid flow and heat transfer in solid-liquid phase change system were simulated. The commercial software PHOENICS, to which several modules were appended, was used to accomplish the simulation. Numerical computation was performed for Stellite 6 cladding on steel, the obtained results are coincident with those measured in experiment basically.更多还原