Coating processes – With pretreatment of the base – Heating or drying pretreatment
Patent
1980-09-29
1982-05-18
Morgenstern, Norman
Coating processes
With pretreatment of the base
Heating or drying pretreatment
427320, 427321, 427349, 427432, 427433, 4274342, B05D 302
Patent
active
043305741
ABSTRACT:
A finishing method and apparatus for conventional continuous hot-dip coating of the type wherein a ferrous base metal strip is caused to pass beneath the surface of a coating bath of molten coating metal and is thereafter subjected to jet finishing, the ferrous base metal strip having been appropriately pretreated so as to be at the proper coating temperature and so as to have its surfaces oxide-free when passing through the bath of molten coating metal. The method comprises the steps of providing an enclosure for the two-side coated strip as it exits the coating bath, locating a finishing jet nozzle to either side of the coated strip within the enclosure, jet finishing the coated strip with a non-oxidizing or inert gas. The apparatus comprises the above mentioned enclosure with the jet finishing nozzles located therein and an appropriate system to provide a non-oxidizing or inert atmosphere within the enclosure.
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Flinchum Charles
Pierson Marvin B.
Armco Inc.
Childs S. L.
Morgenstern Norman
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