Method for producing a steel component provided with a metallic coating providing protection against corosion

US10030284B2 · kind B2 · utility

Assignee

• ThyssenKrupp Steel Europe AG · DE

Inventors

• Maria Köyer · Dortmund, DE
• Sascha Sikora · Grafenau, DE
• Janko Banik · Altena, DE

Key dates

• Filing date: Jul 15, 2014
• Grant date: Jul 24, 2018
• Expiry date: Aug 21, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Methods for producing steel components with well-adhering metallic coatings that provide protection from corrosion offer flexibility in processing qualities. In one example, a flat steel product comprising a steel material that is hardenable by quenching in a hot forming operation and that has a yield point of 150-1100 MPa and a tensile strength of 300-1200 MPa may be coated electrolytically with a thin zinc layer. From the flat steel product, a blank may then be obtained that is heated directly to at least 800° C. and then formed into the steel component. Alternatively, the blank may initially be formed into the steel component and then heated to at least 800° C. Either way, the steel component may then be hardened by sufficiently rapid cooling from a sufficiently high temperature.