Cooling device of hot-rolled steel strip
US8920708B2 · kind B2 · utility
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1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2012 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Mar 1, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B45/0218
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention provides a method of cooling a hot-rolled steel strip which has passed through a finishing rolling, including: cooling the hot-rolled steel strip from a first temperature of not lower than 600° C. and not higher than 650° C. to a second temperature of not higher than 450° C. with cooling water having the water amount density of not lower than 4 m3/m2/min and not higher than 10 m3/m2/min, wherein with respect to the area of the target surface, the area of a portion where a plurality of spray jets of the cooling water directly strikes on the target surface is at least 80%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.