GAS WIPING NOZZLE AND METHOD FOR MANUFACTURING MOLTEN METAL-PLATED METAL BAND

• Main Authors: INOUE, Hidetoshi, NISHINAKA, Syuhei, TAKAHASHI, Hideyuki, FUJII, Toshiki, YAMASHIRO, Kenji, AISHIMA, Reona, YOSHIKAWA, Masahiro, YANAGISAWA, Yutaka, KOYAMA, Takumi
• Format: Patent
• Language: English; French; German
• Published: 26.04.2023
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

Provided are a gas wiping nozzle that is manufactured from parts divided along the slit length direction and can maintain a gap in the width direction of a slit to be constant over the length direction even in a high temperature atmosphere and a method for manufacturing a hot-dip metal strip. In a gas wiping nozzle (10), a first nozzle member (11) and a second nozzle member (12) are each divided along the length direction X of a slit (14) into a plurality of nozzle members (11A) to (11C), (12A) to (12C). The dimension of a divided face (20) of the first nozzle member (11) is 1.5T1 or more in a section of the first nozzle member (11) where T1 is the thickness of the first nozzle member (11) in the width direction Z of the slit (14), and the dimension of a divided face (20) of the second nozzle member (12) is 1.5T2 or more in a section of the second nozzle member (12) where T2 is the thickness of the second nozzle member (12) in the width direction Z of the slit (14).