SUPERPOSITION BLANK FOR HOT STAMPING, METHOD FOR PRODUCING SUPERPOSITION HOT-STAMP MOLDED ARTICLE, AND SUPERPOSITION HOT-STAMP MOLDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To produce a hot-stamped member in which, when a superposition member is produced by hot-stamp molding after materials for hot stamping are superposed, cracking is not caused on the surface of each material, and which can be easily welded to a body.SOLUTION: A superposition blank 9 for hot stamping includes a first steel plate 5 and a second steel plate 7 welded together and is a material for a superposition hot-stamp molded article 1 which has a bent part 2 formed by at least part of a superposition part of the steel plates. The superposition blank 9 for hot stamping has an aluminum-based plating film formed on a portion to be molded into a joint surface 7a at least in the bent part 2 joined to an outer plate 5 which is the steel plate positioned on the outer side of the bent part 2, in an inner plate 7 which is the steel plate positioned on the inner side of the bent part 2, of the first steel plate 5 and the second steel plate 7 before being welded.SELECTED DRAWING: Figure 1