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Posted by Arjun Sen Vitreous Enamels are obtained by using ceramic frits in water media spray or dip applied to clean and pretreated steel sheets/articles. The coated steel is then fused in a specially designed oven to convert the coating into an integral part of the steel. The ceramic frit manufacturers should be contacted for further assistance towards application, fusion temperatures and performance. Ceramic frits can be tailor-made to suit application and performance criteria. Ceramic coatings, on the other hand, may even be processed quartz dispersed in an organic media with or without the addition of other ingredients, additives, etc. Quartz does not dissolve in the media, but depending on their type and quality can be made to become an integral part of that coating. There is no fusion involved, the film formation taking shape depending on the organic media used. Hollow microspheres of glass/ceramic is also used in coatings to provide specific attributes of heat reflection & refraction, insulation, ease of sanding, etc. The film formation of these coating types is again the function of the media used. Trust this helps. Best wishes, A. SEN.
on 9/19/2002, 12:20 pm
Vitreous Enamel & Ceramic coatings are two different product types, although both use Ceramics and both can be applied to steel. Ceramic coatings may also be used over concrete and other cementituous substrates.
Consultant, Protective & Functional Coatings
Bombay, INDIA.
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