PRODUCTION METHOD OF BLANK MATERIAL, PRODUCTION METHOD OF HOT STAMP FORMED PART, BLANK MATERIAL AND HOT STAMP FORMED PART

摘要

PROBLEM TO BE SOLVED: To improve, without changing greatly a hot stamp process, strength and rigidity of a hot stamp formed part produced from a blank material formed by bonding each plate surface of a plurality of metal plates.SOLUTION: A blank material 200 is produced by brazing metal plates 210, 220 with a brazing material 230 having a solidus temperature which is higher than a heating temperature in a heating step for a hot stamp, and which is lower than a solidus temperature of the metal plates 210, 220.