| 摘要 |
PROBLEM TO BE SOLVED: To achieve forging molding of a structure while holding a material texture, even when a raw material in which the material texture is a sorbite, is heated for forging molding.SOLUTION: The invention is configured so that, the raw material in which the material texture is made the sorbite, by a refining step, in advance, is subjected to warming at a range of 770°C-740°C which is equal to or higher than transformation point temperature of the raw material, for performing forging molding into a structure shape, therefore the structure holding the sorbite is obtained after forging.SELECTED DRAWING: Figure 2 |
