PURPOSE: To obtain a metallic strip having a prescribed width and to improve the shape at both ends of the strip by preventing the generation of a heat crown on a roll surface during casting of the metallic strip so that the generation of an unsolidified part is eliminated.
CONSTITUTION: When charging of a molten metal is started, the surfaces of rolls 1a, 1b are heated, and a positive heat crown is generated on the surface of their outer sleeves. The spacing from sensors 16a, 16b to the surfaces of the rolls 1a, 1b is detected continuously by sensors 16a, 16b and is fed to an arithmetic control device 17. The pressure in a liquid pressure chamber necessary for eliminating the heat crown and maintaining the outside peripheral surface in the axial line direction of each roll straight is determined and the signal thereof is fed to pressure regulating valves 18a, 18b. The pressure of the liquid discharged from a liquid pressure pump 15 is regulated to a prescribed pressure and is fed to the liquid pressure chamber of the rolls 1a, 1b, and while the outside peripheral surface in the longitudinal direction of the rolls 1a, 1b is held straight, continuous casting is accomplished.
SHIBUYA KIYOSHI
SUGA TAKAHIRO
ITOU ISAO
SHIMANAKA HIROSHI
KAWASAKI STEEL CO
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