Spiral Tungsten Heater
A spiral tungsten heater is a resistive heating element wound from single or stranded tungsten wire. As a widely utilized heating component, its helical structure increases electrical resistance and thermal output within a limited spatial volume. This design facilitates rapid heating and uniform heat distribution while reducing the risk of localized hot spots. It is suitable for vacuum applications requiring rapid temperature elevation and localized thermal zones.
Spiral tungsten heaters are manufactured from high-purity tungsten materials or doped tungsten alloys to enhance high-temperature stability. This allows the elements to maintain structural integrity at operating temperatures exceeding 2000°C while exhibiting low vapor pressure characteristics.
Spiral tungsten heaters are classified into single and double spiral structures. Single spiral tungsten heater features a simplified structure suitable for general vacuum heating applications with standard thermal uniformity requirements. Double spiral tungsten heater utilizes a dual-layer structure to provide concentrated heating, improved thermal field uniformity, and enhanced structural stability, making it suitable for applications requiring precise temperature uniformity.
CTIA controls winding uniformity and forming precision, ensuring stable matching of pitch, turns and wire diameter. Targeted heat treatment is applied to reduce residual stress, preventing deformation or collapse under high-temperature operation, thereby improving structural stability and operational reliability. Process optimization based on pure tungsten and doped tungsten materials further enhances anti-sag performance and meets long-term high-temperature operating requirements.
Spiral tungsten heaters are widely used in vacuum evaporation sources, localized heating in vacuum furnaces, and various vacuum thermal processing applications, such as CRT aluminum coating, mirror manufacturing and decorative coating processes.
Spiral tungsten heaters are widely used in vacuum evaporation sources, localized heating in vacuum furnaces, and various vacuum thermal processing applications, such as cathode ray tube (CRT) aluminum coating, mirror manufacturing and decorative coating processes. The following table presents the basic information of CTIA’s spiral tungsten heaters:
With more than 30 years of expertise in tungsten heater manufacturing, CTIA GROUP has developed advanced engineering design and precision manufacturing capabilities. Based on application requirements, thermal zone configurations, and power specifications, CTIA GROUP systematically optimizes key structural parameters including tungsten wire diameter, strand count, spiral diameter, pitch, number of turns, and overall length. Combined with surface treatments such as electrolytic polishing or chemical cleaning, CTIA GROUP delivers end-to-end customized solutions, ensuring precise alignment with real-world operating conditions.
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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1.Tungsten heater quotation table
2. Catalog of tungsten heater
3. Tungsten heater models
4. Stranded tungsten wire for making tungsten heater