The vitrifiable material pieces can be applied onto a metallic support and may be transparent, translucent, opaque, coloured or clear. No partitions are used. The cloissone effect can be achieved in a single firing process thus reducing considerably the energy expenditure and processing time....
A process for pretreatment of cold-rolled steel sheets prior to enamelling comprises the steps of acid cleaning, rinsing and immersion in an acidic solution of a complex-bonded antimony salt to give an antimony coating, preferably about 4m thick. Neutralization of the coating with a solution of...
The last step is the application of the enamel layer by wet spraying or electrophoretic deposition and firing. Enamelling of galvannealed steel, using specially designed enamels, at low firing temperatures between 350 and 550掳C is a patented process since the beginning of the 90ies which gets ...
The invention relates to a protecting device for an area which is to remain untreated of an object to be enamelled by a dip-enamelling process, the said device having a protecting element covering the area. According to the invention, the protecting element (1) is arranged at a distance ...
An improved process for obtaining very uniform enamel on thin metallic foils, both at the edges and the flat surfaces, which comprises passing a length of metallic foil through a column of varnish to be coated in the foil to obtain a partial thickness of the desired coating thickness on the...
submerged in a process bath including an additive for reducing the electrical resistance of the enamel biscuit followed sequentially by another rinsing bath, a finish enamel coating bath and not less than one final rinsing bath before the coated work piece is subjected to an enamel firing step.WIE...