Stahlplatte mit einer Zinkbasierten Beschichtung und Hervorragender Korrosionsbeständigkeit, Heissgeprägte Komponente und Herstellungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4715082

Anmeldetag

17. Mai 2024

Veröffentlichung

21. November 2024

Rechtsraum

EP

Abstract

Disclosed is a steel plate having a zinc-based coating layer, wherein the zinc-based coating layer has a zinc mass percentage content of ≥50%, an Al + Mg mass percentage content of <50%, and a thickness of 3-15 microns. Correspondingly, further disclosed is a hot-stamped component prepared from the steel plate having the zinc-based coating layer, a coating layer of the hot-stamped component comprising a surface layer and a ZnFe alloy layer; wherein the surface layer has a mass percentage content of zinc oxide of 5-50%, and a content of manganese oxide of less than 5%; and wherein the ZnFe alloy layer comprises a first ZnFe alloy phase having a mass percentage content of Fe not exceeding 25%, and a second ZnFe alloy phase having a mass percentage content of Fe of 50-70%, with the mass percentage content of Fe in the coating layer of the hot-stamped component gradually increasing from the surface to a steel substrate. Further disclosed are a method for manufacturing the steel plate having the zinc-based coating layer and a method for manufacturing the hot-stamped component. A hot-stamped component prepared using the method has excellent corrosion resistance.

Anmelder

Firma

BAOSHAN IRON & STEEL CO., LTD.

Land

🇨🇳 China