SELECTIVE HEATING AND COOLING OF STRIP

1400074 Coating ferrous strips with metal by hot dipping ARMCO STEEL CORP 4 July 1972 [30 July 1971] 31271/72 Heading C7F In the coating of a ferrous strip with zinc by hot dipping the coating is cooled or heated by fluid from nozzles 30 which may be controlled to give e.g. a greater cooling effect...

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Bibliographische Detailangaben
Hauptverfasser:	EDMOND CHARLES BUNNELL, PAUL EDWARD SCHNEDLER
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:	1400074 Coating ferrous strips with metal by hot dipping ARMCO STEEL CORP 4 July 1972 [30 July 1971] 31271/72 Heading C7F In the coating of a ferrous strip with zinc by hot dipping the coating is cooled or heated by fluid from nozzles 30 which may be controlled to give e.g. a greater cooling effect at the centre of the strip. The control may be manual or automatic, e.g. by using radiation pyrometers or the reflectivity of the coated strip. In a modification, Fig.4 (not shown), two rows of nozzles may be provided, one being supplied with heating and the other cooling fluids. Solidification nuclei are supplied to the coating from a device 24 when the zinc is at a temperature just above freezing point.