Owens-corning Fiberglas Corporation

Richard A Perkins

William C Brady

Jay W Hinze

David J Gaul

Hellmut I Glaser

Paul W Turner

Disclosed is a method for protecting the heating electrodes of glass melting furnaces by applying a DC potential to various electrodes of the furnace. The DC current is applied to the heating electrodes through counter electrodes or anodes. The method of this invention not only reduces the corrosion of the heating electrodes but also reduces the corrosion of the counter electrodes.

Method for protecting the heating electrodes of glass melting furnaces

This invention relates to a method of retarding bushing degradation by glass batch containing iron oxide. The problem is solved by substantially eliminating the passage of current directly through the bushing for heating and employing a conductive heating means to an electrically insulated bushing.

Protection device for basalt drain bushings

A drain bushing for a glass melting apparatus of integral design and machined from a single block of dispersion-strengthened, non-precious alloy. The bushing includes integrally formed mounting flange and molten glass well portions. The bushing contact ears may be either integrally formed or attached by welding, and the outlet tips may be integrally formed with the well portion or inserted into drain openings in the well portion.

Drain bushing

A non-precious metal drain bushing for a glass melting apparatus utilized to manufacture continuous glass fibers. The bushing includes a flat plate positioned beneath the bushing block of the apparatus, the flat plate having a longitudinal rib on its undersurface. Drain apertures are provided through the plate and the rib, and electrical contact ears are provided on the rib. The bushing can be manufactured of either dispersion-strengthened alloy or of a heat-resistant alloy which is not dispersion-strengthened.

A process for forming molten material in a melting furnace is disclosed. Bushings made of refractory or noble metal in the furnace are protected from cracking by applying a positive or anodic D.C. bias.

Method for protecting forming bushings

A method and apparatus for the measurement of oxygen activity in molten glass is disclosed. The apparatus or oxygen sensor is based upon an oxygen ion conducting solid electrolyte and solid electrodes. The sensor can be employed continuously during production in a glass melting furnace.

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Newark, OH, United States of America

Richard A Perkins