Hot rolled steel having improved formability
US7005016B2 · kind B2 · utility
1Cited by
9References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Apr 27, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/0426
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing hot rolled steel having improved formability and minimal silver formation comprises the addition of Titanium and Boron to the molten steel to combine with and remove the free nitrogen prior to rolling. Titanium is added so that the amount of nitrogen remaining after Ti addition is about 0.0005 wt % to about 0.0025 wt % and Boron is added to remove the balance of the nitrogen by forming BN.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.