Chemistry: electrical and wave energy – Processes and products
Patent
1986-10-20
1987-11-24
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 351, 427433, C25D 548
Patent
active
047087790
ABSTRACT:
This invention is directed to a method of treating a selectively galvanized steel strip, such as one-side electrogalvanized sheet, to improve the appearance and paintability of the non-galvanized areas of said strip. The post chemical processing of the strip, which processing does not chemically attack the zink-coated areas of the strip, comprises the steps of applying to the strip a solution of an aqueous bifluoride salt, followed thereby by rinsing said strip with a dilute caustic solution.
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Fountoulakis Stavros G.
Hruskoci Daniel E.
Singh Rajesh K.
Steinbicker Richard N.
Bethlehem Steel Corporation
Iverson J. I.
Leader William T.
Niebling John F.
Noll W. B.
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