TUBULAR ELECTRODE FOR ARC WELDING Russian patent published in 1996 - IPC

FIELD: tubular electrode for gas-shield arc welding. SUBSTANCE: electrode has ferrum containing tube, filled by charge. Charge including alloying elements and ingredients for fluxing oxides contains (mass%) 40-60 of titanium dioxide, 0.3-0.5 of boron oxide and 1.0-5.0 of aluminium powder. Aluminium powder exhibits higher affinity with oxygen that other components of charge. Quantity of aluminium powder is selected in such a way that to provide in seam metal content of titanium equal to 0.02-0.08%, less than 0.002% of boron and less than 0.10% of aluminium. Filling factor of electrode consists 14-17%. That charge may include silicium dioxide (2.0-4.5)mass %, manganese alloying component - (10.0- 15.0)mass %, nickel -(8.0-10.0)mass %. EFFECT: enhanced quality of welded seam with use of such electrode. 11 cl, 2 dwg, 7 tbl