Method and apparatus for continuously hot-dip galvanizing steel

Details Method and apparatus for continuously hot-dip galvanizing steel Method and apparatus for continuously hot-dip galvanizing steel

1980-03-03

1981-06-23

Kendall, Ralph S.

Coating processes

With post-treatment of coating or coating material

Coating material recirculation or regeneration

427349, 427433, 4274345, 118419, 118422, 118424, 118429, 118603, 118612, 118620, C23C 102

Patent

active

042750989

ABSTRACT:
A method and an apparatus for continuously hot-dip galvanizing a steel strip, which comprises:
Using a hot-dip galvanizing tank divided into a reaction chamber and a plating chamber having a bottom wall downwardly inclining toward the bottom wall of said reaction chamber, by a vertical partition provided, at the lowermost end thereof, with a gap and, at the upper end portion thereof, with an aperture of which the opening can be adjusted, said reaction chamber and said plating chamber communicating with each other through said gap and said aperture; causing a hot-dip galvanizing bath containing aluminum in a prescribed amount, contained in said hot-dip galvanizing tank, to circulate by convection, under the effect of stirring by a stirring means provided in said reaction chamber, through said gap and said aperture, between said reaction chamber and said plating chamber; continuously introducing a steel strip into said hot-dip galvanizing bath in said plating chamber while continuing said stirring, to subject said steel strip to a hot-dip galvanizing treatment.

REFERENCES:
patent: 2224578 (1940-12-01), Wean et al.
patent: 2721813 (1955-10-01), Holmberg

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