Patent · US Active

Method for producing a component from steel by hot forming

US10246758B2 · kind B2 · utility

0Cited by

4References

18Claims

0Family size

Assignee

Salzgitter Flachstahl GmbH · DE

Inventors

Friedrich Luther · Gehrden, DE
Thomas Evertz · Peine, DE
Stefan Muetze · Hannover, DE
Michael Braun · Altensteig, DE

Key dates

Filing date	Feb 27, 2013
Grant date	Apr 2, 2019
Priority date	—
Expiry date	Jul 9, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a method for producing a component from transformable steel by hot forming, in which a plate first is cut out of a strip or sheet as the pre-material, and is then heated to forming temperature and pre-formed, having an at least partially martensitic transformation structure after forming. Instead of a press mold hardening, the at least partially martensitic transformation structure is created in the pre-material, or in the plate to be formed, by austenitization and quenching already before forming, and then the thus-conditioned plate is reheated after forming, while maintaining the at least partially martensitic transformation structure, to a temperature below the Ac1 transformation temperature, and formed at this temperature.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.