Method of controlling cooling of hot-rolled steel sheet and syst

Details Method of controlling cooling of hot-rolled steel sheet and syst Method of controlling cooling of hot-rolled steel sheet and syst

1985-05-06

1987-03-10

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

266 80, 266 90, G01B 1124

Patent

active

046489169

ABSTRACT:
In controlling the cooling of a hot-rolled steel sheet after hot rolling, a target value of a transformation rate required for obtaining mechanical properties ultimately expected from the hot-rolled steel plate is previously determined, a rate of gamma to alpha transformed fraction of the hot-rolled steel sheet in a section in which the cooling is controlled is detected by transformed fraction detectors, and an elapsed time from the start of cooling is measured to determine the transformation rate of the steel sheet in a cooling stage, the conditions of cooling being controlled so that the transformation rate can coincide with the target value.

REFERENCES:
patent: 3473023 (1969-10-01), Bloch
patent: 3479506 (1969-11-01), Dorfler
patent: 4440583 (1984-04-01), Ikegami et al.

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