Tungsten Heater in Filament
Tungsten heater is a resistive tungsten filament element fabricated from high-purity or doped tungsten wire and precisely wound into single-helical, double-helical, or other geometric structures. Tungsten heater is also referred to as a tungsten filament in lighting applications. Tungsten filament exhibits stable luminous performance and mechanical strength at high temperatures and is mainly used in lighting applications and cathode heating in cathode ray tubes.
Features of CTIA’s Tungsten Heater in Filament
(1) High-temperature resistance: tungsten has a melting point of approximately 3410°C, maintaining structural stability without melting or failure under high temperatures.
(2) Anti-sag performance: doped tungsten forms a stable grain structure, improving resistance to deformation at high temperatures.
(3) Stable electrical performance: consistent resistivity with minimal thermal variation, enabling precise control of temperature and luminous output.
(4) Low evaporation rate: low vapor pressure reduces material evaporation and deposition at high temperatures, extending service life.
(5) Structural consistency: high-precision winding and forming ensure dimensional stability, suitable for mass production.
(6) Multiple structures: supports single-helical, double-helical, and customized geometries for different lighting and thermal distribution requirements.
Applications of CTIA’s Tungsten Heater
(1) Lighting sources: used in incandescent lamps, halogen lamps, and industrial lighting applications for stable luminous output.
(2) Vacuum electronic devices: used as cathode heating elements in cathode ray tubes (CRT) and electron tubes, providing thermionic emission heating.
(3) Infrared heating systems: used in quartz infrared heaters and radiant heating equipment for fast heating and thermal radiation output.
(4) Electric heating devices: used as core heating elements in ovens and electrical heating systems.
(5) Scientific instruments: used as stable light or radiation sources in spectrophotometers and analytical equipment.
Working Principle of Tungsten Heater
When an electric current is applied, the tungsten heater generates heat due to electrical resistance, rapidly raising its temperature to incandescence or thermionic emission levels. At sufficient temperature, the filament emits visible light through thermal radiation, and under higher temperature conditions, it can also generate thermionic emission, enabling dual functionality as a light source and electron source.
Specifications of CTIA’s Tungsten Heater
Material: tungsten (W ≥ 99.95%) or doped tungsten wire
Winding structure: single-helical, double-helical, or customized geometry
Wire diameter: 0.02–1.5 mm
Operating temperature: up to 2000–2600°C under vacuum or inert atmosphere
Melting point: 3410°C ±20°C
Electrical characteristics: low resistance, high-current carrying capability
Operating environment: vacuum, inert gas, or controlled atmosphere
Surface condition: chemical cleaning, alkaline cleaning, or electrolytic polishing
Characteristics: low evaporation rate, anti-sag performance, long service life under thermal cycling conditions
CTIA GROUP has over 30 years of experience in tungsten heater manufacturing and customization. Based on application requirements, power, voltage, and installation space, key parameters including wire diameter, doping, helical structure, heating length, and lead design are optimized. Surface treatments such as electrolytic polishing and alkali cleaning are applied. Full-process customization is provided from material selection to manufacturing.
For any inquiry, please contact tungsten heater manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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