Pre-conditioned AlSiFe coating of boron steel used in hot stamping
US11168379B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Feb 12, 2018 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Dec 9, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for pre-conditioning a hot stamped part is provided. The process includes continuously annealing a boron steel material having an aluminum coating for a predetermined time and at a predetermined temperature such that less than 10 weight % Iron (Fe) is in the aluminum coating and AlSi pockets are formed in the aluminum coating prior to a subsequent hot stamping process, wherein the predetermined time and temperature are a function of a thickness of the boron steel material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.