| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a padding method for a metal mold surface effective in circumferential padding on a metal mold of a form that a part of a radial cross section comprises a curved part.SOLUTION: A metal mold 1 is a metal mold, for example, for hot forging. One face of the metal mold 1 is a face coming in contact with a processing object and serves as a padding object part 3. The padding object part 3 has a form of rotational symmetry around a central axis 5 of the metal mold 1. Further, the padding object part 3 has a form that at least a part of a radial cross section of the metal mold 1 comprises a curved part. After a weld torch 11 is placed at a predetermined position, welding is carried out while a holding base 7 is being rotated. At this time, while circumferential welding is being carried out, a distance from the central axis 5 of the weld torch 11 is kept constant. A rotational speed of the holding base 7 is set according to a distance from the central axis 5 to the weld torch 11.</p> |
