FLUX FOR STEEL MECHANISED WELDING AND SURFACING Russian patent published in 2016 - IPC B23K35/362 

FIELD: metallurgy.

SUBSTANCE: claimed flux consists of silicon manganese production wastes that contain the following ratio components, wt %: silicon dioxide 25-49, aluminium oxide 4-28, calcium oxide 15-32, calcium fluoride 0.1-15, magnesium oxide 1.7- 9.0, manganese oxide 3-17, iron oxide 0.1-3.5. Impurities used can be sulphur in amount not higher than 0.12 wt % and phosphorus in amount not higher than 0.02 wt %.

EFFECT: lower costs, flux higher strength, stable arc, reduced loss of doping elements.