Swaging Multiple Composite Rare Earth and Tungsten Electron Emission Materials Processing Methods

The present invention provides a multi-processing methods of rare earth complex swaging tungsten electron emission materials. Specific steps are as follows:

1) The percentage by weight, containing La2O3, Y2O3, and CeO2 each rare earth oxide content of 0.4 to 1.4% and the total content of the three rare earth oxide is from 2 to 2.2% and the balance is tungsten the rare-earth sintered tungsten billet into B203 swaging machine for processing, rotary forging temperature of 1625-1675 ℃, feed rate 1-2m / min, for conventional vertical billet 13X13X450mm melt using a die change system for: Φ13 -Φ12.5-Φ12-Φ11.2-Φ10.5-Φ10-Φ9.5-Φ9.0-Φ8.5-Φ8.0-Φ7.5-Φ7.0-Φ6.5;

2) The sample B203 after swaging under a hydrogen atmosphere annealed to eliminate stress, annealing temperature 2150-2250 ℃, feed rate of 0.7-0.9m / min;

3) The rare earth tungsten material annealed into B202 swaging machine for processing, swaging temperature: 1425-1475 ℃, feed rate: 2-3m / min, die change system: Φ6.0-Φ5.6- Φ5.2-Φ4.8-Φ4.4-Φ4.1;

4) The rare earth tungsten material was placed B201 B202 after forging swaging machine for processing, swaging temperature: 1325-137 5 ℃, feed rate: 3-4m / min, die change system: Φ3.8-Φ3 .5-Φ3.25-Φ3.0.

The present invention is adapted to changes of mechanical properties of composite rare earth tungsten multi-electron emission materials, using the rotary forging temperature of 1625-1675 ℃ conduct B203 rotary forging, swaging billet, as amended, 2150-2250 ℃ after rapid thermal annealing, and then in 1425- 1475 ℃ were swaging B202, B201 finally swaged at 1325-1375 ℃, can be processed by the above method for preparing a variety of specifications Φ3.0-Φ12.0 rare earth tungsten rod. This method low energy consumption, product yield.


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