Method for manufacturing forged steel roll
US10144057B2 · kind B2 · utility
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Key dates
| Filing date | Feb 1, 2013 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Jun 29, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49988
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing a forged steel roll comprises: casting, by the ESR method, a steel ingot which contains, by mass %, C: 0.3% or more, Si: 0.2% or more, Cr: 2.0-13.0% and Mo: 0.2% or more, and further contains Bi at 10-100 ppm by mass; and forging the steel ingot to manufacture the roll. According to this method, since freckle defects can be sealed near the center of the steel ingot, the roll can be stably used over a long period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.