Device for cooling band coils in hot rolling strip mills

Claim 1

An arrangement for cooling hot rolled steel bands reeled into coils, especially hot rolled wide strips, which includes: a vat adapted to receive and contain a cooling liquid bath, feeding conveyor means operable to receive hot rolled steel bands reeled into coils about a central axis and to feed the same with the axis of each coil in substantially vertical position to said vat at one end, first transferring means at said one end of said vat, including a lifting device operable to lower the coils with the axis of each coil in vertical position from said feeding conveyor means into said vat, a plurality of longitudinal transporting means arranged within said vat for receiving the coils from said first transfer means and transporting the same with the axis of each coil in vertical position through said vat, withdrawing conveyor means for conveying cooled coils away from said vat at the opposite end, second transferring means at said opposite end of said vat including a lifting device operable to lift the coils with the axis of each coil in vertical position for transferring uniformly cooled coils from said transporting means onto said withdrawing conveyor means, said vat being provided with fluid inlet means for admitting cooling liquid into said vat and also being provided with fluid outlet means for discharging heated-up cooling liquid from said vat, and control means associated with said vat and including temperature sensing means operable automatically to ascertain the temperature of the cooling liquid and to control the speed of flow thereof through said vat to thereby control the temperature of said cooling liquid.