Spun Tungsten Crucible
Spun tungsten crucible is a high-temperature container manufactured through the hot spinning process. Using high-purity W1 tungsten plate as the raw material, it achieves denser structure and more stable high-temperature performance by controlling the microstructure through multi-pass hot spinning and intermediate annealing. Compared to sintered tungsten crucible or welded tungsten crucible, spun tungsten crucible demonstrates superior structural uniformity, deformation resistance, and long-term service stability, making it ideal for high-end vacuum and ultra-high-temperature thermal field systems.
1. Key Features of CTIA's Spun Tungsten Crucible
(1) High-Density Structure: Hot spinning ensures a uniform microstructure and density of 18.6–19.3 g/cm³, effectively eliminating porosity.
(2) High-Temperature Stability: Maintains structural integrity up to 2600°C in vacuum or inert atmospheres.
(3) Creep and Deformation Resistance: Reinforced grain structure ensures shape stability and dimensional integrity during long-term high-temperature operation.
(4) High Purity: Fabricated from W1 tungsten to minimize contamination risk for high-purity molten materials.
(5) Design Flexibility: Enables precise control over complex contours and gradient wall thicknesses to adapt to diverse thermal fields.
2. Manufacturing Process of CTIA’s Spun Tungsten Crucible
Spun tungsten crucible is produced through a series of processes, including powder metallurgy billet preparation, hot-rolled tungsten plate fabrication, precision blanking, multi-pass hot spinning, intermediate stress-relief annealing, finishing, vacuum cleaning, and testing. The spinning process effectively optimizes the grain flow structure, enhancing both creep resistance and overall service life.
3. Applications of CTIA’s Spun Tungsten Crucible
(1) Sapphire Crystal Growth: Carries high-temperature melts while ensuring thermal field stability and purity.
(2) Rare Earth and Reactive Metal Smelting: Ideal for melting and refining highly reactive metals while minimizing impurity introduction.
(3) Vacuum Evaporation Coating: Acts as a reliable evaporation source carrier, enhancing process stability and film uniformity.
(4) High-Temperature Vacuum Systems: Maintains structural integrity under extreme thermal cycling during heat treatment and material testing.
(5) Advanced Material Research: Facilitates the melting and study of superalloys, ceramics, and functional materials.
4. Specifications of CTIA’s Spun Tungsten Crucible
Specifications of CTIA’s spun tungsten crucible is shown in the picture as follows:
CTIA GROUP, with over 30 years of experience in tungsten crucible manufacturing, provides high-density, high-temperature stable spun tungsten crucible tailored to different equipment thermal field designs and high-temperature operating conditions, ensuring reliable performance in sapphire crystal growth, vacuum evaporation, and high-temperature melting applications.
For any inquiry, please contact tungsten crucible manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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