Explanation

It is a kind of composite materials that is coated with M-layer or several layers of enamel on the metal surface, fired at a certain temperature, and firmly bonded by physical and chemical reaction between metal and enamel. enamel has the mechanical strength of metal, and the enamel mask has the characteristics of corrosion resistance, heat resistance, wear resistance, easy cleaning and decoration of glass. metallic materials used for enamel are various steel plate, non-ferrous metals, precious metals, etc. metallic materials shall be pretreated before coating, such as degreasing, pickling and grit blasting. porcelain sleeves are made by crushing and mixing certain glass frits and grinding additives, and then coating and burning them on the metal surface. For T. industry, there are usually bottom glaze and surface glaze. The main purpose of the bottom sleeve is to be close to the metal substrate, and to prevent oversintering/over- burning, bubbles and other defects. The main function of surface glaze is to achieve performance that is suitable for the purpose of use. In some special cases, bottom sleeves are not used. The coating methods for porcelain sleeves include wet coating, dry coating, electrostatic coating, electrophoretic coating, etc. enamel products are generally divided into: ① according to the materials of the bottom blank, there are steel plate, cast iron and other black metal enamel. Non ferrous metal enamel such as copper, gold and silver, and alloy enamel such as stainless steel and aluminum magnesium, among which steel plate enamel and cast iron enamel are more commonly used; ② According to the use, there are domestic enamdware, chemical enamel, architectural enamel, art enamel, etc.; ③ According to the characteristics of enamel, such as acid resistant enamel, low melting enamel, self-cleaning enamel, microcrystalline enamel, etc.

Classification