COMPOSITE FOR INSULATING BUSHING TO WELDING TORCH Russian patent published in 2003 - IPC

FIELD: welding. SUBSTANCE: composite for insulating bushings to welding torches containing sodium silicate, borax, quartz sand and kaolin involves sapropel additionally in the following ratio of components, weight %: sodium silicate, 40-44; borax, 2-4; quartz sand, 30-40; kaolin, 9-11; sapropel, 9-11. Invention provides the development of composite providing enhancement of strength and exploitation stability of bushings with simultaneous reduction of cost. Invention can be used for making insulating bushings to welding torches. EFFECT: improved and valuable properties of composite. 1 tbl