Tungsten Crucible in Photovoltaic Monocrystalline Silicon Melting
Tungsten crucible in photovoltaic monocrystalline silicon melting refers to high-temperature containment vessel utilized in single crystal silicon high-temperature melting and thermal zone systems. Tungsten crucible directly holds high-temperature silicon melts within vacuum or inert atmospheres, serving as a physical interface for heat transfer and temperature control to stabilize thermal boundary conditions during monocrystalline silicon growth. Manufactured from high-purity tungsten powder (W ≥ 99.95%) to establish a dense matrix through powder metallurgy sintering or hot spinning followed by precision machining to finished dimensions, tungsten crucible is specifically configured for integration into industrial high-temperature silicon material melting furnaces and photovoltaic thermal zone systems.
Why Select Tungsten Crucibles for Photovoltaic Monocrystalline Silicon Melting?
During photovoltaic monocrystalline silicon melting, melt temperatures typically exceed 1400°C, accompanied by prolonged thermal holding and cyclic thermal variations, which demands exceptional structural stability and purity control from the crucible material. CTIA’s tungsten crucibles exhibit engineered material characteristics to meet the technical demands of high-temperature silicon material melting and thermal zone system applications:
(1) High-Temperature Stability: With melting point of approximately 3410°C, they withstand extended exposure to intense thermal zones while maintaining structural integrity.
(2) Low Vapor Pressure: Exhibits minimal volatilization within vacuum and inert atmospheres to help sustain silicon melt purity.
(3) Creep Resistance: Preserves dimensional stability under prolonged high-temperature thermal cycling, mitigating deformation risks.
(4) Thermal Zone Stability: Provides stable thermal conductivity to facilitate uniform thermal zone distribution, enhancing crystal growth consistency.
(5) Thermal Shock Resistance: Withstands frequent temperature fluctuations and complex thermal cycling operating conditions.
Specifications of CTIA's Tungsten Crucibles
（1）Purity: ≥ 99.95%
（2）Density: 17.8 ~ 18.5 g/cm³
（3）Diameter: 50 ~ 700 mm
（4）Height: 50 ~ 900 mm
（5）Wall Thickness: 2 ~ 35 mm
（6）Customization: Dimension and structure optimization available from CTIA GROUP
Tungsten crucible is primarily deployed in specialized high-temperature thermal zone structures, auxiliary melting systems, laboratory silicon material research, and select specialized high-temperature silicon melt environments.
CTIA GROUP utilizes over 30 years of manufacturing experience in tungsten crucible production to align with photovoltaic monocrystalline silicon thermal zone specifications. Production parameters incorporate engineering optimization for wall thickness distribution, structural strength, and thermal matching. Technical solutions integrate full-cycle processing from raw material preparation to final precision shaping.
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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