| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems that: the cost of a metal material to be heated increases; and the temperature equalization of a die surface is difficult to achieve.SOLUTION: A heating method comprises a through hole forming step to form a through hole passing through the inside of a metal material along a heated face of the metal material, a coil arrangement step to arrange a coil for induction heating by insertion into the through hole, and a heating step to pass a high-frequency current to the coil for induction heating of the metal material.SELECTED DRAWING: Figure 2 |
