| 摘要 |
PURPOSE:To facilitate the changing of the steel strip pass line in a metal hot dipping bath and make the rising position of the steel strip from the bath constant by moving a plating roll in the bath in an arc shape with the central point set on the outside of the bath as a fulcrum. CONSTITUTION:In the case of moving the center of a plating roll 7 from the position O1 to the position O2, the central point P of such a circle in which the positions O1, O2 come on the same circumference is set on the outside part of a plating bath 5, and a plating machine 6 is rotated at prescribed angles with the point P as a fulcrum. Then, the pass line in the bath 5 moves in such a way that it goes linear S2 (dotted line) from conventional curved S1 (solid line). However, the pass line of the part upper than a guide roll 11 is constant. Hence, according to this method, the mutual interchanging of the case of combination use of the roll 11 and an antivibration device 13 for a steel strip and the case of the use of the device 13 alone is made possible without moving a gas throttling device 8 and a surface treatment device 12. |
