PADDING METHOD BY LASER BEAM

摘要

PROBLEM TO BE SOLVED: To provide a padding method with a laser beam for effectively restraining concave parts or cracks caused by control of the supply volume of powder. SOLUTION: The powder supply volume is increased at the point before a wrap part overlapped with a first layer and a second layer is started. At that time, timing and volume for increasing the powder supply volume vary corresponding to a shape of a first layer start part and the inside diameter of a workpiece. The timing for increasing the powder supply volume is set within 60 deg. from the position where the wrap part is started. Furthermore, the increased volume of the powder supply volume is set at 40% or less of the powder supply volume at a constant part.