| 摘要 |
PURPOSE:To increase a slit gap and to enable high-speed thin sticking by placing shield plates between the surface of a molten metallic bath and wiping nozzles so that specified conditions are satisfied with respect to a metallic strip. CONSTITUTION:A metallic strip 6 is continuously pulled up from a molten metallic bath (zinc bath) 2 for hot dipping, and a gas is blown on the strip 6 from wiping nozzles 8 to control the amount of a molten metal sticking to the strip 6. When continuous hot dipping is carried out as mentioned above, a pair of shield plates 16 are placed under the wiping nozzles 8 so that conditions represented by the formulae are satisfied. In the formulae, D is the interval (mm) between the strip 6 and each of the plates 16, H is the interval (mm) between the surface 10 of the bath 2 and the plates 16. The plates 16 are heated to a temp. above the m.p. of the molten metal.
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