| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas wiping device including a gas wiping nozzle which sprays a gas onto the surface of a steel strip to adjust the amount of molten metal for plating that adheres to the surface, the gas wiping device having excellent overcoat and splash suppression effect at the width-direction ends of the steel strip. <P>SOLUTION: The gas wiping device 10 includes in the gas wiping nozzle 1: a slit 1a' which extends in the width direction of a steel strip K and sprays a gas from a hollow space; and gas introducing ports 1e for introducing the gas into the hollow space. In the slit 1a', left and right blocking members 2, 2 which freely slide and block the left and right regions of the slit are provided, and a gas blowing-out port 1a is formed between the blocking members 2, 2. In the hollow space, left and right flow straightening pieces 1c, 1c extending from gas blowing-out port side ends 2a, 2a of the left and right blocking members 2, 2 to a partition wall 1d are provided to form a gas flow path GR between the left and right flow straightening pieces 1c, 1c, wherein the width of the gas blowing-out port 1a and the width of the gas flow path GR are the same. <P>COPYRIGHT: (C)2013,JPO&INPIT |
