| 摘要 |
PURPOSE:To straighten so as to surely flatten various kinds of double layer cladding metal plates by performing forced cooling of the metal side having larger thermal shrinking quantity with performing hot straightening by using the cooling conditions to make the final camber quantity in zero and the set value of straightening conditions. CONSTITUTION:A hot straightening device 12 arranges a cooling header 14 between a hog leveller roll 13 and upper roll. The various sizes, quality and cladding ratio of a steel plate 11, the water flow density of the cooling header 14 necessary for making the final camber quantity in zero at room temp. time concerning the inlet side temp. and the plate passing speed of the hot straightening device 12 are stored in advance by equations, etc. in the water flow density and plate passing speed setting device 15. The straightening is performed by adjusting the water quantity of the cooling header 14 via a water quantity control device 18 also by operating a speed control device 19. The set conditions are corrected with the feedback via arithmetic unit 22 of the measured value of a deflection meter 21, etc. installed on the outlet side. Various kinds of double layer cladding metal plate can be thus flattened surely.
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