Coating processes – Immersion or partial immersion – Molten metal or fused salt bath
Patent
1994-09-22
1997-03-25
Beck, Shrive
Coating processes
Immersion or partial immersion
Molten metal or fused salt bath
427 9, 427348, 427349, B05D 118
Patent
active
056142668
ABSTRACT:
A coating control system is provided enabling continuous operations, free of interruption for coating control purposes, while achieving desired coating weight and thickness profile for the various gages, widths and coating specifications encountered on a given continuous strip production line. In each of a pair of elongated pneumatic dies, a pressurized gas jet is controllably shaped and directed by flow-control means internally-mounted of each pneumatic die to impinge against its respective substrate coated surface with its major directional component of force being controlled to be perpendicularly transverse to the travel path of the coated strip across its full width. Adjustment of such internally-mounted means is coordinated with control of gas pressure supply and/or adjustment of die positioning means to maintain desired coating weight and coating profile across the width of the strip. Pneumatic and other crown-control measures of the invention are exercised along the centerline of the of the strip enabling production of continuous-strip galvanized steel product having improved tracking and handling properties.
REFERENCES:
patent: 4524716 (1985-06-01), Mueller
patent: 5074242 (1991-12-01), Bricmont
Cox Timothy L.
Loth John L.
Santilli Anthony J.
Snyder Howard
Wilson Walter A.
Beck Shrive
Maiorana David M.
Weirton Steel Corporation
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