COATED METAL ELEMENT USED FOR PRODUCING GLASS

摘要

The invention relates to a coated metal element used for producing glass, said element having a coating on the opposite side to the glass melt that is impermeable to H>2<, or to H>2< and O>2<. The invention also relates to a method for coating metal elements used for producing a glass melt and glass, according to which an insulating casing is applied to the side of the metal element to be coated, in such a way that a cavity is formed between the surface to be coated and the insulating casing, the cavity is filled with the coating material and said material is melted at a sufficiently high temperature. The invention further relates to the use of the coating that is impermeable to H>2< or H>2< and O>2< for coating metal elements that come into contact with the glass melt, such as electrodes in distributors, melting channels and baths, pipes for conducting and conditioning glass melts, such as supply channels and Danner channels, Vello and A drawing heads, moulding tools for producing tubing and rods such as Vello pins, downdraw pins, orifice rings and Danner blowpipes, platinum double-pipes for the direct heating of floor outflows or filling organs, mixers, tube-drawing heads, feeders and refining chambers.