Removal of various pollution from the surface of the infrastructure
The surface of the metal must be completely clean for the better adhesion of the enamel glaze, if even the fingerprint of the artist remains on the structure, its fat prevents the direct connection of the glaze with the body and a cut appears on the surface of the glaze, for this purpose, the method Various are used:
The object is immersed in a glass container according to its dimensions, which contains table salt and vinegar, or vinegar is poured directly on the desired object, and then salt is sprinkled on all its surfaces, and the stains are removed with a wire brush. do
Using sulfur ink (sulfuric acid): In this method, the object is immersed in a warm solution of dilute sulfuric acid, and if the object has too many stains, it is placed in concentrated sulfuric acid and cleaned with a wire brush. they do. Then they wash the object with water to completely remove the acid.
Use of soap, metal fibers, sandpaper and salt water: at the end of all steps, the cleaned object is cleaned with water and dried with sawdust. Then, it is cleaned of any dust before glazing by compressed air of the compressor.
Glaze preparation
Glazing powder cannot be used alone due to its insoluble and high volumetric weight. Therefore, in order to suspend the glaze particles in water and make it more sticky, they use natural thickeners such as “be-grain”. First, the grain is boiled until its glaze is obtained, then it is mixed with glaze powder at a ratio of 1 to 10.