Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1982-06-11
1984-04-24
McIntosh, John P.
Coating processes
With post-treatment of coating or coating material
Heating or drying
427432, 427433, 4274344, 118 65, 118 68, 118419, B05C 312
Patent
active
044448147
ABSTRACT:
A finishing method and apparatus for use in conventional hot-dip coating of the type wherein a ferrous base metal strip, having been appropriately pretreated so as to be at or near the proper coating temperature and so as to have its surfaces free of oxides, is cause to pass beneath the surface of a bath of molten coating metal, exiting the bath between conventional finishing rolls. The method comprises the steps of providing an enclosure which overlies at least the coating metal meniscus areas created between the finishing rolls and the strip, and maintaining within the enclosure an inert or non-oxidizing atmosphere to shroud the meniscus areas. The apparatus comprises the above mentioned enclosure with an appropriate system to provide and maintain the inert or non-oxidizing atmosphere therein.
REFERENCES:
patent: 1143922 (1915-06-01), Skemp et al.
patent: 2197622 (1940-04-01), Sendzimir
patent: 2906018 (1959-09-01), Baker
patent: 2926103 (1960-02-01), Brick
patent: 3828723 (1974-08-01), Herman
patent: 4333417 (1982-06-01), Camp et al.
Conley Wayne G.
Fields Gayle P.
Flinchum Charles
Gibson Alan F.
Armco Inc.
McIntosh John P.
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