Patent · US Expired

Method for producing a hardened sheet metal section

US6949151B2 · kind B2 · utility

1Cited by

1References

6Claims

0Family size

Assignee

BENTELER AUTOMOBILTECHNIK GMBH · DE

Inventors

Oliver Müller · Paderborn, DE
Wilhelm Arns · Paderborn, DE
Peter Goer · Paderborn, DE

Key dates

Filing date	Jun 10, 2002
Grant date	Sep 27, 2005
Priority date	—
Expiry date	Jan 5, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D9/0068
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a method for producing a hardened sheet metal section from a flat blank, wherein the flat blank is provided with collared holes that are collared and with two groove-like indentations which serve to support the sheet metal blank on a conveyor during heating treatment in an oven; subsequently, the blank is formed in a press tool into a sheet metal section by warm forming and where, if required, the formed indentations can be flattened; and thereafter the section is hardened while remaining clamped within the tool.

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