Apparatus for continuous hot dipping of metal strip

Details Apparatus for continuous hot dipping of metal strip Apparatus for continuous hot dipping of metal strip

1981-09-14

1985-05-28

Lawrence, Evan K.

Coating apparatus

With stretching or tensioning

118 63, 118 67, 118 69, 118419, 118424, 277 3, 432236, 432244, B05C 3152, B05C 1100, B05C 1106

Patent

active

045193371

ABSTRACT:
In continuous hot dipping of metal strip, the tension of the strip at pre-treatment furnaces and that at air-wiping nozzles are isolated and made independent of each other. For this purpose bridle rolls driven by motors are disposed downstream of the pre-treatment furnaces. The tension at the former is maintained at a lower value, while the tension at the latter is maintained at a higher value. The bridle rolls are mounted in bearings which are covered by seal boxes in which an inert gas is enclosed so as to prevent the intrusion of atmospheric air into the furnaces.

REFERENCES:
patent: 2797173 (1957-06-01), Keller
patent: 3082009 (1963-03-01), Whitley et al.
patent: 4059711 (1977-11-01), Mino et al.
patent: 4167150 (1979-09-01), Davis et al.
patent: 4189157 (1980-02-01), Mahan et al.
patent: 4285668 (1981-08-01), Pepe

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