METHOD FOR FORMING CERAMIC FILM ON SURFACE OF SILVERWARE AND SILVERED WARES FOR PREVENTION OF DISCOLORATION

摘要

The present invention relates to a method for forming a ceramic film for preventing surface discoloration of silver products and silver plated products mainly used as ornaments such as bags and cloths, necklaces, earrings, etc.;In order to prevent the deterioration of the quality of high-quality products that occur because silver products used for decorations, accessories, and jewelry such as high-quality bags are easily oxidized and discolored.;Forming a beryllium film to plate beryllium on the surface of silver and silver plated products by hanging a stainless plate on an anode in an electrolyte solution containing beryllium sulfate (BeSO ₄ · 4H ₂ O) and electroplating the silver or silver plated products on the cathode. Process;;Washing and drying the surface of the product having the beryllium film formed with buff polishing and a surfactant;;Washed and dried product was added to 1 liter of water and 20 to 80 cc of water glass (liquid sodium silicate), 5 to 60 g of sodium methane silicate, 5 to 30 g of tungsten sodium, and 5 to 10 g of molybdenum acid were mixed and formed into a ceramic coating solution. In the ceramic film forming step of dipping and drying,;It is to prevent the discoloration of silver and silver plated products to maintain the value of the goods for a long time.;Ceramic film, beryllium film, chemical conversion, Vickers hardness (Hv), silver surface discoloration factor