| abstract |
An object of the present invention is to prolong the life of a casting mold. Kind Code: A1 In a casting mold made of SCM420 material, a vertical wall extending from a gate to a cavity surface, and a gate on the cavity surface, which are parts to which a relatively large thermal shock is applied at the time of contact with a molten metal. At the closest part, a cavity forming part 14 made of a maraging steel material having better toughness and thermal shock resistance than the SCM420 material is provided. The cavity forming portion 14 is provided by filling the recess 32 as a molten metal by welding the welding rod 36 by arc welding, in other words, after performing build-up welding, cooling and solidifying the molten metal. [Selection diagram] Fig. 1 |