激光束空域形态对激光定向能量沉积316L不锈钢热输运影响的数值模拟
任松, 吴家柱, 张屹, 张大斌, 曹阳, 尹存宏

Numerical Simulation on Effects of Spatial Laser Beam Profiles on Heat Transport During Laser Directed Energy Deposition of 316L Stainless Steel
REN Song, WU Jiazhu, ZHANG Yi, ZHANG Dabin, CAO Yang, YIN Cunhong
表3 沉积工艺参数
Table 3 Process parameters of the deposition experiment
Process parameterValueUnit
Laser power P600, 700, 800W
Scanning speed v600mm·min-1
Powder feeding rate m10.2g·min-1
Powder radius of molten pool surface Rc4mm

Equivalent radius of

laser beam rb

1.2mm
Laser defocusing amount d8mm