Patent · US Active

Method for producing a hot-formed and press-hardened metal component

US9340233B2 · kind B2 · utility

1Cited by

2References

5Claims

0Family size

Assignee

BENTELER AUTOMOBILTECHNIK GMBH · DE

Inventors

Markus Pellmann · Sassenberg, DE
Johannes Böke · Blomberg, DE

Key dates

Filing date	Sep 12, 2011
Grant date	May 17, 2016
Priority date	—
Expiry date	Aug 26, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D2221/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention relates to a method for producing a hot-formed and press-hardened metal component for an automobile having at least two regions of different hardness. A hardenable sheet-metal blank is heated to at least an austenizing temperature and a first region of the sheet-metal blank is intermediately cooled at a cooling speed greater than the lower critical cooling speed of the material of the sheet-metal blank. The sheet-metal blank is then hot-formed and press-hardened in a press-hardening tool by quenching the first region from a bainitic structure transformation stage, thereby adjusting a mixed structure of martensite and bainite in the first region.

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