Method of cooling hot-rolled steel plate

Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element

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72201, B21B 3710, B21B 4502

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active

047856467

ABSTRACT:
A method of water cooling a hot-rolled steel plate is disclosed. In this method, while a hot-rolled steel plate is being advanced lengthwise, a plurality of nozzles spray cooling water to the steel plate, and thus the plate is cooled to a predetermined temperature at a predetermined cooling rate. Before, while and after the plurality of nozzles carry out water-cooling, temperatures are consistently measured at predetermined temperature measurement points in cross-sectional areas of temperature measurement positions which are arranged lengthwise at predetermined locations of the steel plate. Each time such measurement is performed, degree of deformation of the plate is calculated on the basis of temperature differences between the temperature measurement points. When the calculated degree of deformation is not within an allowable range, corrections are made on the distribution of the water supplied by the plurality of nozzles.

REFERENCES:
patent: 3604234 (1971-09-01), Hinrichsen et al.
patent: 3613418 (1971-10-01), Nara et al.
patent: 3905216 (1975-09-01), Hinrichsen
patent: 4274273 (1981-06-01), Fapiano et al.
patent: 4569023 (1986-02-01), Wakamiya
patent: 4658614 (1987-04-01), Wakamiya

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