METHOD OF PRODUCTION OF ZIRCONIUM-BASED ALLOYS Russian patent published in 2007 - IPC C22C16/00 C22B9/20 

FIELD: metallurgy; industrial production of high-quality zirconium-based alloys used in atomic industry.

SUBSTANCE: proposed method includes screening the briquettes made from mixture of zirconium-based material and alloying elements; making the billets from briquettes, molding the consumable electrodes from billets, iodide bars and zirconium wire and melting the ingot by repeated vacuum arc remelting; part of billet corresponding to bottom part of ingot of first remelting process and/or gating part of ingot of final remelting process is formed from depleted briquettes into which alloying elements are introduced in the following amount: C=K₁xC_r, where K₁ is coefficient taking into account the tendency of alloying element to liquation K₁=0.5-1.0, C_r is rated content of alloying element in alloy; total mass of depleted briquettes M=K₁xD, where K₂ is coefficient taking into account the mass of molten metal at the initial moment of melt depending on length of ingot K₂=0.04-0.12 kg/mm, D is diameter of final melt ingot, mm.

EFFECT: improved quality of alloys due to enhanced chemical homogeneity of ingot.

6 cl, 1 tbl, 1 ex