| 摘要 |
PURPOSE:To control uniformly the plating amount on steel strip by controlling the amount of molten metal coming out of the coating roll by the procedure in which the lower part of a coating roll whose circumferential speed is changeable is dipped in a molten metal bath and a roll not dipped in the bath is pushed against the coating roll. CONSTITUTION:The coating roll 1 whose lower part is dipped in a molten metal bath is rotated in the same direction as that of the steel strip 9, and then the second roll 2 not dipped in the molten metal bath is pushed against the rotating coating roll 1 in order to control the amount of molten metal being carried up by the roll 1. In this case, the circumferential speed of the roll 1 is regualted and at the same time the contact pressure of the roll 2 in contact with the roll 1 is adjusted to control the amount of molten metal. Thus, a predetermined amount of plating can be applied on the one side of steel strip. |
