Method of forming a hot stamped coated steel product
US12012640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2023 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Dec 12, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12757
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of forming a hot stamped coated steel product includes providing a precoated steel strip, the precoated steel strip including a base steel having a first side and a second side, and a precoating on at least one of the first side and the second side, the precoating being made of aluminum or an aluminum alloy; heating the precoated steel strip in a furnace, wherein the precoated strip experiences a temperature rise at a heating rate (Vc) between 4° and 12° C./s, wherein Vc is a mean heating rate between 20 and 700 C; removing the heated precoated steel strip from the furnace; and then hot stamping the precoated strip to deform the precoated steel strip into a hot stamped coated steel product, the hot stamped coated steel product having a coating including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.