Method for producing a steel component having a metal coating protecting it against corrosion, and steel component

US10287647B2 · kind B2 · utility

Assignee

• ThyssenKrupp Steel Europe AG · DE

Inventors

• Maria Köyer · Dortmund, DE
• Sascha Sikora · Grafenau, DE
• Janko Banik · Altena, DE
• Manuela Ruthenberg · Dortmund, DE
• Jennifer Schulz · Unna, DE

Key dates

• Filing date: Jul 15, 2014
• Grant date: May 14, 2019
• Expiry date: Jan 26, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/265
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A steel component formed from a flat steel having a yield point of 150-1100 MPa and a tensile strength of 300-1200 MPa and coated with an anticorrosion coating of an alloy that includes 35-70% by weight aluminum, 35-60% by weight zinc, 0.1-10% by weight magnesium, up to 10% by weight Si, and up to 5% by weight Fe. A blank obtained from the flat steel product is heated to at least 800° C. and formed into the steel component. Alternatively, the steel component may be formed into the steel component first and then heated to at least 800° C. Regardless, the steel component may then be hardened by sufficiently rapid cooling the steel component from a sufficiently high temperature.