ELECTRODE COATING CHARGE Russian patent published in 2003 - IPC

FIELD: welding production, namely materials used for welding especially important constructions of carbon and low-alloy steels. SUBSTANCE: charge contains (mass.%): calcium fluoride, 20-26; granite, 10-20; ferromanganese, 5-9; limestone - the balance. Charge may also contain granite in the form of siftings and as ferromanganese - metallurgical ferromanganese including 45% of manganese. EFFECT: enhanced mechanical quality of welded joints, lowered cost of charge and of the whole process of making low-toxicity electrodes. 2 cl, 1 tbl