Method for manufacturing austenite-ferrite stainless steel with improved machinability
US9797025B2 · kind B2 · utility
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Key dates
| Filing date | Jan 18, 2017 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Jan 18, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing a plate, a band, or a coil of hot-rolled steel is provided. The method includes providing an ingot or a slab of steel with a desired composition and a microstructure composed of austenite and 35 to 65% ferrite by volume and hot rolling the ingot or slab at a temperature between 1150 and 1280° C. to obtain a plate, a band or a coil. A method for manufacturing a hot-rolled bar or wire of steel, a steel profile and a forged steel piece are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.