GAS WIPING NOZZLE AND METHOD FOR MANUFACTURING HOT DIP METAL-PLATED STEEL STRIP AND GAS WIPING NOZZLE
The present invention is directed to a gas wiping nozzle that can easily remove molten metal splashes and can provide a beautiful steel sheet with no linear mark defects, and a method for manufacturing a hot-dip metal-coated steel strip and a gas wiping nozzle.Provided are: a gas wiping nozzle that...
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| creator | TAKAHASHI, Hideyuki YAMASHIRO, Kenji ITO, Yu KAKU, Yoshihiko KOYAMA, Takumi |
| description | The present invention is directed to a gas wiping nozzle that can easily remove molten metal splashes and can provide a beautiful steel sheet with no linear mark defects, and a method for manufacturing a hot-dip metal-coated steel strip and a gas wiping nozzle.Provided are: a gas wiping nozzle that adjusts the coating weight of a molten metal on the surface of a steel strip pulled up from a molten metal bath, wherein at least the surface of the gas wiping nozzle is made of a ceramic, and the arithmetic mean roughness Ra and the peak count PPI of the gas wiping nozzle satisfy Formula (1); and a method for manufacturing a hot-dip metal-coated steel strip using the gas wiping nozzle. PPI>c1×Ra+c2PPI: peak count (the number of peaks per inch)Ra: arithmetic mean roughness [µm]c1 and c2: constant |
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| language | eng ; fre ; ger |
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| subjects | APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS 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 NOZZLES PERFORMING OPERATIONS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING |
| title | GAS WIPING NOZZLE AND METHOD FOR MANUFACTURING HOT DIP METAL-PLATED STEEL STRIP AND GAS WIPING NOZZLE |
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