METHOD FOR PRODUCING SPECIAL COPPER INGOTS Russian patent published in 2021 - IPC C22B15/00 C22B9/22 

FIELD: non-ferrous metallurgy.

SUBSTANCE: invention relates to the field of non-ferrous metallurgy, specifically to the production of high-purity copper ingots for superconducting materials. Strips of cathode copper are used as starting materials, the stage of preparation of starting materials is carried out by cutting sheets of cathode copper into strips 150±10 mm wide, straightening and milling at the ends, the production of a consumable electrode is carried out by welding the strips together, with one of the ends. The electrode is prepared for fastening to the furnace rod, after which a sequential triple electron-beam remelting of the obtained consumable electrode is carried out, with intermediate machining of the surface of the welded ingots to a depth of 3-7 mm after all stages of remelting.

EFFECT: invention makes it possible to weld ingots of high-purity copper with an oxygen content of no more than 0.0015% and a minimum level of impurities of non-ferrous metals.

3 cl, 2 tbl, 2 dwg