Tungsten Crucible in Quartz Glass Melting
Tungsten crucible in quartz glass melting refers to the critical containment vessel used in the high-temperature melting, purification, and shaping of high-purity quartz (SiO₂). It stably contains molten quartz under high vacuum or inert atmosphere while providing a uniform heating environment, ensuring melt stability and consistent forming quality.
Tungsten crucible is primarily utilized in high-purity quartz glass melting, optical-grade quartz preparation, and specialized high-temperature glass forming processes, with widespread applications in optical communication, optical components, and high-temperature laboratory material preparation.
Why Use Tungsten Crucible for Quartz Glass Melting?
The melting temperature of quartz glass typically exceeds 1700°C, while the process is highly sensitive to impurities, placing strict requirements on the high-temperature stability and purity of the crucible material. Quartz glass melting mainly requires the crucible material to:
(1) Maintain structural stability at elevated temperatures without significant deformation;
(2) Minimize impurity introduction and melt contamination;
(3) Provide excellent thermal stability and temperature uniformity, and
(4) Withstand long-term continuous high-temperature operating conditions.
CTIA’s tungsten crucible is engineered with the following features to support the high-temperature and high-purity requirements of quartz glass melting:
(1) High-temperature structural stability: Maintains structural integrity during long-term operation above 1700°C with minimal deformation.
(2) High-purity control capability: High-purity tungsten material minimizes impurity migration and helps improve quartz glass purity.
(3) Dimensional stability: Maintains dimensional consistency during prolonged continuous heating, supporting stable melting conditions.
(4) Thermal field uniformity: Stable thermal conductivity promotes uniform temperature distribution and improves melting consistency.
(5) Thermal shock resistance: Withstands frequent heating and cooling cycles, reducing structural risks caused by thermal shock.
(6) Vacuum environment stability: Maintains reliable performance under high-temperature vacuum or inert atmosphere.
Specifications of CTIA’s Tungsten Crucible
（1）Purity: W ≥ 99.95%
（2）Density: 17.8 ~ 18.5 g/cm³
（3）Dimensions: diameter 100 ~ 700 mm, height 100 ~ 1200 mm, wall thickness 5 ~ 30 mm
（4）Fully customizable in all dimensions to meet specific application needs.
CTIA GROUP has specialized in tungsten crucible manufacturing for over 30 years. Tungsten crucible can be systemically optimized in wall thickness distribution, structural stability, and thermal field matching according to the thermal field structure and process requirements of different quartz glass melting furnaces, providing an integrated solution from material preparation to precision forming.
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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