Method of cooling cold steel strip with cooling rolls
US4495009A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 6, 1983 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Jul 6, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/84
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of cooling band or hoop steels with hollow cooling rolls through which a cooling medium flows to absorb the heat of the steel strips trained about and in contact with the hollow cooling rolls, thereby cooling the steel strips. According to the invention this method is carried out so as to fulfil the following equation (1) with the cooling roll having a diameter D>600 mm when a thickness h of the steel strip is within 0.2.ltoreq.h<0.6 mm, EQU .DELTA.T.sub.S <0.65.multidot..sigma..sub.T.sup.1.5 .multidot..theta..multidot.h.sup.-0.75 (1) and so as to fulfil the following equation (2) with the cooling roll having a diameter D>1,000 mm when a thickness h of the steel strip is within 0.6 mm.ltoreq.h, EQU .DELTA.T.sub.S <1.05.multidot..sigma..sub.T.sup.1.5 .multidot..theta..multidot.h.sup.-0.83 (2) where .DELTA.T.sub.S is temperature fall .degree.C. per one cooling roll, .sigma..sub.T is tensile stress in a lengthwise direction of the steel strip and .theta. is winding angle about the cooling roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.