| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a hot dip metal plated metallic strip by which the variation of the amt. of plating to be deposited on the surface of a metallic strip is always reduced, and stable quality can be obtd. even in the case the operating conditions under which continuous hot dip metal plating is executed are changed. SOLUTION: As to the method for producing a hot dip metal plated metallic strip, a metallic strip dipped into a plating bath and deposited with a hot dip metal plating soln. is lifted at a fixed rate by being supported by a pair of upper and lower support rolls 4 holding the metallic strip faces therebetween, wiping is executed with gap to control the coating weight of the hop dip metal, and after that, it is supported by a pair of upper and lower touch rolls 7 holding the metallic strip faces therebetween and is run. In this case, a spacing L between the upper support roll in the plating bath and the lower touch at the outside of the bath is set to the range decided by the inequality of L<=80×T×W2/V, where L: the spacing between the upper support roll in the bath and the lower touch roll at the outside of the bath, V: the running rate of the metallic strip, T: the tension applied to the metallic strip, and W: the objective plating coating weight per one side of the metallic strip.
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