Metal part with controlled deformation orientation
US9908559B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 4, 2014 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Jul 4, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2221/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A metal piece having at least two areas of lower mechanical strength than the body of the piece, said pieces being respectively arranged on one side and the other of a longitudinal central section (PM) of said piece and alternatively located in two locations separated longitudinally along the piece, the areas of lower mechanical strength than the body of the piece being formed by local control of the stamping temperature during a stamping process of the piece, notably a process comprising steps including heating the piece to a temperature range suitable for obtaining an austenitic stage, then stamping this piece in a stamping tool suitable for defining different temperatures in the different areas of the stamped piece, for example by virtue of the voids formed in the stamping tool or by local reheating of the stamping tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.