Numerical simulation temperature field of laser cladding titanium alloy

To analyse the major factors that affect temperature field during the laser cladding process, the paper build a finite element calculation modle of temperature field in the case of titanium alloys laser cladding process by multi pass lap surfacing,in consideration of heat source model, material thermophysical property and meshing situation. Then 3D numerical simulation was made for the temperature field under the 4 pass lap cladding layer on basal plate, and the change rule was achieved for the temperature field of cladding layer node under the different laser power and different scanning speed. The results indicated that the laser power and scanning speed affect the temperature field more obviously. The results in this paper will make a good foundation for further researches into the change rule of stress field of cladding layer.