| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressing method and a pressing apparatus of a galvanized steel sheet by which sacrifice anticorrosive function by the plated layer of a product produced from the galvanized steel sheet is secured and the galvanized steel sheet is pressed into an accurate shape and a pressed goods made of the galvanized steel sheet. SOLUTION: The galvanized steel sheet 1 is fed to a conveying means 5 by a picking-up means 7, this steel sheet 1 reaches a pressing means 4 after being heated to a temperature within a quenchable region by a heating means 3, pressed by a pressing means 4 and simultaneously quenched by being rapidly cooled. The iron content in the plated layer is increased by that the plated layer of the steel sheet 1 is heated by the heating means 3, but the pressing work is performed before the iron content in the plated layer excesses 90 mass%. In this way, the sacrifice anticorrosive function by zinc is secured and press-formability is improved by that the steel sheet 1 is heated. COPYRIGHT: (C)2006,JPO&NCIPI
|
