C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
261/16, 117/54
C03B 7/00 (2006.01) C03C 8/00 (2006.01) C03C 8/06 (2006.01) C03C 8/08 (2006.01) C23D 5/04 (2006.01)
Patent
CA 1075270
ABSTRACT A method of applying a porcelain enamel coating to a ferrous workplace which eliminates the necessity for pickling the surface or coating the surface with a flash nickel coating. The ferrcus workplace is merely cleaned with conventional cleaning events and then a dry particulate coating of a reactive material is electrostatically applied thereto. The reactive coating consists of a relatively hydrophilic, soft fritted glass which has the capability of reacting with the underlying workpiece surface at temperatures on the order of the firing temperature, and below. A second coating consisting of a porcelain enamel frit is then electroctatically applied to the previously coated workpiece. The firing of the piece caused the fusion of the soft glass under- coating to react with the underlying workpiece surface and eventually causes the porcelain enamel frit to form a continuous porcelain enamel coatingthereover.
263186
Leonard Ralph A.
Linhart Otto C.
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