| 摘要 |
FIELD: metallurgy.SUBSTANCE: unalloyed iridium ingot is subjected to hot forging, electron-beam melting iridium with content of the main component making at least 99.95 wt % being used to this end. Forging is carried out for about 0.5 h. Note here that temperature is decreased from 2000°C to 1300°C. Then, forged piece is annealed in vacuum of 10-4÷10-5 mm Hg. Forged piece is heated at the rate of 150°C/h the room temperature to 1100÷1200°C and held thereat for at least 1 h.EFFECT: lower level of oxygen, hence higher quality of finished articles.1 tbl, 1 ex |
