Method and device for manufacturing black plated steel sheet

The present invention relates to a method for manufacturing a black plated steel sheet by bringing a molten Al- and Mg-containing Zn-plated steel sheet into contact with water vapor in a sealed container, and provides a method for manufacturing a black plated steel sheet whereby a plating layer is u...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Takahashi, Ichiro, Yukura, Yoshitaka, Nakano, Tadashi, Suzuki, Noboru, Tsuchiyama, Masahiko, Murai, Yuusuke, Nakamizo, Hiroyuki, Ohta, Tsutomu, Kajimoto, Shinichi, Sato, Toshiaki, Sakuraba, Yuuki, Yamamoto, Masaki, Kurisu, Yoshinobu
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	The present invention relates to a method for manufacturing a black plated steel sheet by bringing a molten Al- and Mg-containing Zn-plated steel sheet into contact with water vapor in a sealed container, and provides a method for manufacturing a black plated steel sheet whereby a plating layer is uniformly blackened and improve appearance is obtained. A method for manufacturing a black plated steel sheet by bringing a molten Al- and Mg-containing Zn-plated steel sheet 1 into contact with water vapor in a sealed container 10, the sealed container 10 being configured so that either the flow rate of water vapor introduced into the sealed container 10 or the flow rate of water vapor discharged from the sealed container 10 is variably controlled, whereby the pressure in the sealed container 10 is maintained at a predetermined value, and the water vapor introduced into the sealed container 10 and the molten Al- and Mg-containing Zn-plated steel sheet 1 being brought into contact with each other in the sealed container 10 in which the pressure thereof can be maintained at the predetermined value.