Method of and apparatus for hot dip coating of steel strip

Details Method of and apparatus for hot dip coating of steel strip Method of and apparatus for hot dip coating of steel strip

1983-03-16

1984-10-23

Silverberg, Sam

Coating processes

With pretreatment of the base

Heating or drying pretreatment

427321, 427319, 427432, 118 61, 118419, B05D 302, B05C 312

Patent

active

044788924

ABSTRACT:
An improved method of and apparatus for hot dip metal coating of steel strip in which the strip is heated and cleaned in a furnace then passed through a protective hood containing a reducing gas and into the molten coating metal bath. Coating metal oxides evolved in the hood are removed by flowing a nonoxidizing gas across the surface of the coating metal in the hood and withdrawing the gas and entrained oxides from a location in the vicinity of the coating metal surface. The oxides are removed from the withdrawn gas, and the gas returned to be again flowed across the coating metal surface.

REFERENCES:
patent: 2570906 (1951-10-01), Alferieff
patent: 2881514 (1959-04-01), Drummond
patent: 3051587 (1962-08-01), Coburn
patent: 3728144 (1973-04-01), Poucke
patent: 4053661 (1977-10-01), Caldwell et al.
patent: 4123291 (1978-10-01), Arnold et al.
patent: 4172911 (1979-10-01), Michels
patent: 4183983 (1980-01-01), Cook

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