Method and apparatus for operating a system for galvanizing stee

Details Method and apparatus for operating a system for galvanizing stee Method and apparatus for operating a system for galvanizing stee

1998-03-10

1999-11-23

Beck, Shrive

Coating processes

Immersion or partial immersion

Molten metal or fused salt bath

427436, B05D 118

Patent

active

059896450

ABSTRACT:
Method and apparatus for galvanizing steel sheet in a single galvanizing hot dip pot of the careless induction type, with great flexibility for frequent changes of galvanizing alloys, whereby the productivity of the single pot plant is increased and its investment costs are considerably lowered, in contrast with the current practice of operating plants with two continuously heated galvanizing pots, one in operation and one in stand-by. The single pot having a plurality of associated ingot molds of a capacity to hold a full charge of the alloy being discharged from the pot and a pumping system to empty a molten charge of one alloy composition from the pot into at least some of the stand-by ingot molds (ready for re-use later) and a transport system for replacing the removed charge by an alternate charge in the form of solid ingots of a different alloy composition (which can be either recycled ingots formed from a molten charge previously removed from the pot and/or fresh ingots). Part of any charge can first pass through a pre-melter. The pot preferably also has a heated cover to prevent thermal shock during the charging and discharging of the pot.

REFERENCES:
patent: 3383189 (1968-05-01), Sendzimir
patent: 4741384 (1988-05-01), Healey
patent: 4762553 (1988-08-01), Savage et al.
patent: 5354970 (1994-10-01), Knupfer

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