PROCEDURE FOR PRODUCTION OF TUNGSTEN WIRE Russian patent published in 2010 - IPC C22F1/18 B21C1/00 

FIELD: metallurgy.

SUBSTANCE: there are forged beads fabricated out of tungsten powder produced out of blue tungsten oxide WO_2.9. Upon forging re-crystallisation annealing is performed and successive multi-pass drawing of wire. It is carried out first at a chain mill in 4 passes and further at block mill without intermediate re-crystallisation annealing. Re-crystallisation annealing is done before drawing to diametre of finished wire.

EFFECT: production of tungsten wire with required mechanical and structure characteristics; high percent of accepted product at shortened process.

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