THE USAGE OF TUNGSTEN-CONTAINING ORES AT WELDING

Abstract. The paper presents the results of the carried out experimental researches in welding under АН 26С fl ux (AN26S) with fl ux cored wires, produced from tungsten-containing components (tungsten ores, concentrates, waste) of powdered carbon-fl uorine-containing waste of aluminum production. The carried out researches include the production of fl ux cored wires at different correlations of tungstencontaining and carbon-containing components, the choice of welding mode, the determination of the chemical analysis of the weld metal, the slag composition after welding, metallographic research and wear tests. The studies have shown the principal possibility to restore tungsten directly from tungsten-containing oxide material using a carbon-containing restorative; at the same time the degree of tungsten  reduction is more than 96 %. When welding according to the supposed technology, in the weld layer tungsten carbides have been received; they have the dimensions in the range of 1 – 5 μm.

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