| 摘要 |
PROBLEM TO BE SOLVED: To provide a collision reinforcing material such as a bracket integrated door impact beam capable of imparting a required strength by press work, and a manufacturing method therefor. SOLUTION: A metal plate 20 (or 30) is blanked from a metal rolled material. And the metal 20 (or 30) is heated to 850 deg.C or higher and lower than the melting point thereof. Right after the heating, the metal plate 20 (or 30) is carried to a forming press, and subjected to plate working using a ordinary temperature press dies 11, 12 against the metal plate 20 (or 30) keeping a high temperature of 850 deg.C or higher to impart the required shape.
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