US 11,655,532 B2
Gas wiping nozzle and method of manufacturing hot-dip metal coated metal strip
Yu Terasaki, Tokyo (JP); Hideyuki Takahashi, Tokyo (JP); Kenji Yamashiro, Tokyo (JP); Takumi Koyama, Tokyo (JP); Yoshihiko Kaku, Tokyo (JP); Kenji Tsuboi, Tokyo (JP); Hidetoshi Inoue, Tokyo (JP); Syuhei Nishinaka, Tokyo (JP); Toshiki Fujii, Tokyo (JP); and Reona Aishima, Tokyo (JP)
Assigned to JFE Steel Corporation, Tokyo (JP)
Appl. No. 17/434,026
Filed by JFE Steel Corporation, Tokyo (JP)
PCT Filed Oct. 29, 2019, PCT No. PCT/JP2019/042428
§ 371(c)(1), (2) Date Aug. 26, 2021,
PCT Pub. No. WO2020/174750, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. JP2019-033078 (JP), filed on Feb. 26, 2019.
Prior Publication US 2022/0136090 A1, May 5, 2022
Int. Cl. C23C 2/20 (2006.01); C23C 2/00 (2006.01); C23C 2/16 (2006.01); B24C 5/04 (2006.01); B05C 5/02 (2006.01)
CPC C23C 2/20 (2013.01) [B05C 5/027 (2013.01); B24C 5/04 (2013.01); C23C 2/003 (2013.01); C23C 2/16 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A gas wiping nozzle configured to blow wiping gas onto a metal strip pulled up from a molten metal bath and adjust an amount of a molten metal coated to a surface of the metal strip, the gas wiping nozzle comprising: a first nozzle member and a second nozzle member arranged to face each other, in which a slit as a gas blowing port is formed to extend in a length direction between end portions of the first nozzle member and the second nozzle member on a metal strip side; and a shim member configured to adjust a gap of the slit in a width direction orthogonal to the length direction, wherein the shim member is made of a ceramic material or a carbon material, each of the first nozzle member and the second nozzle member has a groove portion, and the shim member is fitted into both of the groove portions of the first nozzle member and the second nozzle member and the shim member fixes the first nozzle member and the second nozzle member to each other; and wherein a coefficient of linear expansion of the first nozzle member and a coefficient of linear expansion of the second nozzle member is ½ or less than a coefficient of linear expansion of a nozzle header to which the first nozzle member and the second nozzle member are fixed.