Forged roll for rolling a seamless steel pipe and manufacturing method of same
US5950310A · kind A · utility
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6Claims
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Key dates
| Filing date | Jun 11, 1998 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Jun 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49565
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A forged roll for rolling a seamless steel pipe, having excellent biting properties and wear resistance, and manufacturing method. The forged roll comprises a high carbon alloy cast steel comprising about 1.10-1.85 wt % carbon, about 0.3-1.2 wt % silicon, about 0.4-1.5 wt % manganese, about 0.5-2.0 wt % nickel, about 0.5-2.0 wt % chromium and iron. Heat treatment for spheroidal carbide formation is performed so that the spheroidal carbide covers about 35-55% of the area of the roll metallurgical structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.