Compound porcelain signs enamel frit different purpose enamel frit

Compound porcelain signs enamel frit different purpose enamel frit

The different common usage of the term is by the enamel and glaze manufacturers. they use ingredients formed into u201cfritsu201d that wouldnu2019t otherwise behave properly in their enamel recipes. for instance, flux compounds such as lead, borax and alumina are often u2018frittedu2019 before being added to an enamel mixture.
As indicated, a frit produced in accordance with this invention which, if quickly cooled from a high temperature, is a clear frit or alternatively, if fritted from an annealing temperature is a white frit, will, when deposited in a conventional manner and fired on the metallic article, produce a white enamel of unexpected covering power.
The coating of steel articles with an enamel layer, by means of electrophoresis, is known. the enamel frit is generally put into a water suspension, for the purpose, by grinding the frit with water and possibly other additives.
An object of the instant invention, therefore, is to produce a frit composition which is useful in coating cast iron. another object is to produce a frit composition which may be used to coat cast iron by the dry precess which produces a vitreous enamel coating having a clean white color and high hiding power.

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