Tapered Tungsten Crucible
Tapered tungsten crucible is a high-temperature refractory container made of high-purity tungsten for vacuum melting, high-purity material preparation, and crystal growth applications, featuring a tapered structure that improves melt flow and discharge behavior, enabling more concentrated and smoother melt movement while reducing adhesion and residue formation.
Tapered tungsten crucible features a sidewall with a certain inclination angle compared with cylindrical tungsten crucible and is not a standard geometric cone. It adopts a variable wall-angle design intended to optimize thermal field distribution and melt flow behavior, enabling smoother and more concentrated melt movement under gravity, thereby improving melt pool morphology and interface stability. The cone angle can be adjusted according to equipment thermal field conditions and installation requirements to achieve better process compatibility.
Performance Features of CTIA’s Tapered Tungsten Crucible
(1) High-Temperature Adaptability: Tungsten features a high melting point and low vapor pressure, making it suitable for vacuum and inert atmosphere high-temperature environments.
(2) Melt Control Capability: The tapered geometry optimizes melt flow paths for processes requiring directional control.
(3) Thermal Field Compatibility: The structural design helps smooth local temperature gradients and stabilize thermal transitions.
(4) Design Flexibility: Cone angle, wall thickness, and height can be customized according to equipment and process requirements.
Applications of CTIA’s Tapered Tungsten Crucible
(1) Vacuum Melting: Used for stable melting of high-temperature metals and high-purity materials under controlled conditions.
(2) Semiconductor Material Preparation: Applied in purification and preparation of high-purity materials with improved process stability.
(3) Crystal Growth: Used in sapphire and infrared crystal growth for improved melt and interface control.
(4) High-Temperature Metal Purification: Reduces impurity retention and evaporation loss during refining and remelting processes.
(5) Research Equipment: Used in academic and laboratory systems for high-temperature material and thermal field studies.
(6) Directional Solidification and Thermal Field Research: Supports analysis of melt flow and solidification interface behavior.
(7) High-Temperature Vacuum Sintering: Maintains structural stability in powder metallurgy and refractory material processing.
Specifications of CTIA’s Tapered Tungsten Crucible
(1) Purity: ≥99.95%
(2) Top Diameter: 50–500 mm
(3) Height: 50–600 mm
(4) Wall Thickness: 3–30 mm
(5) Cone Angle: Customizable
(6) Density: ≥17.8 g/cm³
(7) Operating Environment: Vacuum or inert atmosphere
(8) Working Temperature: ≤2600°C
(9) Note: Cone angle, bottom structure, and overall geometry are customizable
CTIA GROUP has been deeply rooted in tungsten crucible field for over 30 years and provides tungsten crucibles in various structural forms including tapered, cylindrical, and boat-shaped (tungsten boat), and performs structural optimization and customized design combined with thermal field distribution and process requirements to meet high temperature application needs such as vacuum melting, crystal growth, and high purity material preparation.
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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