Precoated sheets for manufacturing press-hardened coated steel parts
US9957582B2 · kind B2 · utility
2Cited by
4References
6Claims
0Family size
Assignee
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Key dates
| Filing date | May 31, 2017 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | May 31, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C2/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cold-rolled sheet is provided. The cold-rolled sheet includes a steel substrate with a carbon content C0 between 0.07% and 0.5%, expressed by weight, and a metal pre-coating on at least the two principal faces of the steel substrate. The substrate has a decarburized area on the surface of each of the two principal faces. The depth p50% of the decarburized area is between 6 and 30 micrometers, and p50% is the depth at which the carbon content is equal to 50% of the content C0. The sheet does not contain a layer of iron oxide between the substrate and the metal pre-coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.