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    • 3. 发明专利
    • COOLING METHOD AND DEVICE OF METALLIC STRIP
    • JPS58130228A
    • 1983-08-03
    • JP1098982
    • 1982-01-28
    • KAWASAKI STEEL CO
    • SAKAI TOSHIROUSUGANUMA NAMIONISHIDE TERUYUKIMURAKAMI SHINJIROU
    • C21D1/00C21D9/573
    • PURPOSE:To control cooling capacity by a cooling roll, extending over a wide range, by increasing or decreasing a contact area of a cooling medium which is made to flow to the inside of the cooling roll, to a non-heat-insulated part formed at intervals on the inside surface of the cooling roll. CONSTITUTION:On the inside circumferential surface of a drum part 12 of a cooling roll 11 for cooling a metallic strip 1 by means of contact, plural heat insulating bodies 15 are embedded at almost equally distributed parts in the circumferential direction, and a heat-insulated part and a non-heat-insurated part are formed alternately. In said drum part 12, an adjusting roll 21 is idle-installed so as to be capable of relative rotation, and on the outside circumferential surface of its drum part 12, plural heat insulating bodies 24 are placed almost equally in the circumferential direction so that they can be opposed to said heat insulating bodies 15, and between adjacent heat insulating bodies 24, a refrigerant passage 25 is formed. Said cooling roll 11 and adjusting roll 21 are constituted so that not only a synchronizing rotation can be executed but also an asynchronous rotation can be executed, superposition of said heat insulating bodies is adjusted suitably between 0-100%, and the quantity of heat passing through to a refrigerant side from the strip 1 side of the cooling roll 11 is controlled.