| 摘要 |
PURPOSE:To form a padding layer being uniform and excellent in quality by generating a molten pool by irradiating metallic powder which is supplied onto a metallic base material by a laser beam in an atmosphere of inert gas, and fusing the metallic powder to the surface of the metallic base material. CONSTITUTION:A supply pipe 2 is opposed to a groove 6 of a metallic base material 1, and also, the metallic base material 1 is rotated so that the groove 6 moves along the tip of the supply pipe 2. In such a state, a laser device, an inert gas supply device and a metallic powder supply device are operated, respectively. As a result, a laser beam 3 and inert gas containing metallic powder 5 for padding are supplied coaxially to the groove 6 of the base material 1 from the supply pipe 2. In such a way, the metallic powder 5 is melted by the laser beam in an inert gas atmosphere by argon gas 4 and brought to padding in the groove 6. |
