CZ292089B6 - Metal spraying method to glass, porcelain, and ceramic surfaces - Google Patents

Abstract

The proposed metal spraying method to glass, porcelain, and ceramic surfaces employs thin copper strips provided with asphalt self-adhesive surface, coated with aqueous solution of zinc chloride and ammonium chloride eliminating copper oxides on the surface of the strip, forming a base for character of the deposit and further a possibility to apply a liquid alloy with 60 percent by weight of tin and 40 percent by weight of lead to an article by means of a solder at a temperature of 170 degC. Subsequently the article is washed in a warm water solution containing a wetting agent in order to remove the residue of solder water and patina solutions, and the metal deposit is coated with antioxidant oil preventing matting of the metallic surface of the deposit and ensuring permanent metal glossiness thereof after drying.

Description

Technical field

The invention relates to a method of depositing metals on glass, porcelain and ceramic surfaces either on a smooth surface or on a surface treated with decorative techniques: painting, spraying, blunting with cold or baked colors.

BACKGROUND OF THE INVENTION

The surface of glass, ceramics and porcelain due to their silicate structure does not allow to apply any liquid metal and its permanent connection with the surface of glass, porcelain and ceramics. To date, only techniques have been used to join glass parts for stained glass and lamps, but not for their application and decoration.

SUMMARY OF THE INVENTION

According to the invention, a copper tape of 0.12 mm thickness and a width of 2.4-8 mm is applied to the surface of glass, porcelain or ceramic, provided with an asphalt self-adhesive surface which adheres easily and precisely to the surface of glass, ceramic or porcelain and the possibility of applying liquid metal to the article. The bonded copper tape is coated with brazing water containing an aqueous solution of zinc chloride and ammonium chloride, eliminating the copper oxides on the tape surface. A molten alloy with 60% by weight of tin and 40% by weight of lead is successively applied to the tape by means of a solder tape. The metal is applied in the layer so as to achieve the desired plasticity of the surface to be applied, or it is possible to apply the metal in several layers according to the nature of the surface to be applied. At the same time, the molten metal helps to further fix the glued bottom tape, where the temperature of 170 ° C causes the asphalt self-adhesive layer on the tape to bake to the surface of glass, porcelain or ceramic. The deposited metal exhibits a silver-gloss surface which can be color treated with patinating solutions to a copper color with an aqueous solution of copper sulfate and nitric acid or black with an aqueous solution of copper sulfate, hydrofluoric acid, nitric acid and selenic acid, depending on the selected coating character and color. After the above deposition operations, the product must be thoroughly washed with a warm water solution containing anionic surfactant to remove residual solder water and patinating solutions and the product is dried. Finally, the metal coating is coated with an antioxidant oil, for example an oil silicone emulsion, which prevents the metal surface of the coating from becoming confused and provides a permanent metallic gloss after drying.

The advantage of the solution according to the invention is the possibility to decorate the surface of glass, porcelain or ceramic with the applied liquid metal, which normally does not hold the metal on the glass surface.

EXAMPLES OF THE INVENTION ( ₍

On the surface of the glass plate, a base metal mesh was drawn and a thin copper tape provided with an asphalt adhesive surface that adheres easily and precisely to the product surface and forms the basis for the coating character. Adhesive copper tape was needed by soldering water to eliminate copper oxides on the tape surface. A molten alloy with 60% by weight of tin and 40% by weight of lead was successively applied to the strip by soldering solder. At the same time, the molten metal at the same time helps to further fix the glued bottom strip, where the temperature of 170 ° C causes the asphalt self-adhesive layer on the strip to bake to the surface of the glass plate. The deposited metal exhibits a silver-gloss surface which can be colored with copper or black patinating solutions in conjunction with the selected coating character and product color.

-1 CZ 292089 B6

After the deposition operations, the plate was thoroughly washed with a warm water solution containing a surfactant to remove the remainder of the soldering water and patinating solutions and dried. Finally, the metal coating was coated with antioxidant oil, which prevents the metal surface from becoming confused and ensures a constant metallic shine after drying.

Claims (5)

PATENT CLAIMS I 10 λ 1. A method of depositing metals on glass, porcelain and ceramic surfaces, characterized in that a thin copper tape of 0.12 mm thickness, 2.4 to 8 mm width and provided with a thickness of 0.12 mm is applied to the surface of glass, porcelain or ceramics. an asphalt adhesive surface adhering to the glass surface 15 and molten metal is applied to the copper strip. Method for depositing metals on glass, porcelain and ceramic surfaces according to claim 1, characterized in that the bonded copper tape is coated with brazing water consisting of an aqueous solution of zinc chloride and ammonium chloride, eliminating copper oxides on the surface 20 tapes. A method for depositing metals on glass, porcelain and ceramic surfaces according to claim 2, characterized in that a molten alloy with 60% by weight of tin and 40% by weight of lead is successively applied to the adhered copper strip by soldering solder. The method of applying metals to glass, porcelain and ceramic surfaces according to claim 3, characterized in that the application of the molten metal at a temperature of 170 ° C at the same time further adheres the glued backing tape and baking the asphalt adhesive layer on the tape to the glass, porcelain or ceramics. 5. A method for depositing metals on glass, porcelain and ceramic surfaces according to claim 4, characterized in that, after said deposition operations, the product is successively washed thoroughly after patination of the patinated product or after soldering, if not further patinated, with warm water solution. containing wetting agent, anionic tensities, 35 to remove the remainder of the brazing water and the patinating solutions, either a copper patinating solution containing water, copper sulfate and nitric acid, or a black patinating solution containing water, copper sulfate, hydrofluoric acid, nitric acid, selenic acid, and dried. The method of applying metals to glass, porcelain and ceramic surfaces according to claim 5, characterized in that the metal coating is finally coated with an antioxidant oil, for example an oil silicone emulsion, which prevents the metal surface of the coating from becoming confused and .