| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: method of tungsten of high purity production includes vacuum refining by means of the first remelting by electron-beam melting and by means of the second remelting by electron-beam melting with melt hardening in crystalliser with ingots receiving. At that for vacuum refining are subject to cerametallic bars, received from initial sintered unalloyed tungsten. Electroarc vacuum melting is implemented while intensive mixing of melt by electromagnetic field of solenoid with formation of fine-grain structure in tungsten of high purity ingots. Ratio between diameters of crystallisers for the first and the second remelt is d1/d2=0.57. ^ EFFECT: high-clean tungsten of high processing flexibility. ^ 2 cl, 2 dwg, 3 tbl, 1 ex |
