Coating processes – With post-treatment of coating or coating material – Gas jet or blast mechanically treats coating
Patent
1993-04-02
1994-11-01
Beck, Shrive
Coating processes
With post-treatment of coating or coating material
Gas jet or blast mechanically treats coating
427349, 4274301, 118 63, 118 66, 118 67, B05D 304
Patent
active
053606418
ABSTRACT:
A jet stripping apparatus comprises a stripping nozzle positioned to direct a stripping gas jet stream (11) against each side of a steel strip (7) emerging from a bath (8) of molten zinc or aluminium/zinc alloy with a layer (9) of bath material thereon, means to supply gas to said stripping nozzle at a pressure sufficient to liberate a relatively strong stripping jet stream (11) therefrom, and surface modifying means spaced closely below said stripping nozzle effective to smooth the surface of said layer (9) prior to it reaching the stripping jet stream (11). Said surface modifying means preferably comprise a smoothing nozzle positioned to direct a relatively weak surface modifying gas jet stream (18) against the layer (9) that is effective to smooth the layer but not to substantially affect the quantity of material passing it.
REFERENCES:
patent: 3607366 (1968-11-01), Kurokawa
patent: 4502408 (1985-03-01), Hennechart et al.
Beck Shrive
John Lysaght (Australia) Limited
Maiorana David M.
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