Cup-Type Tungsten Heater
1. What Is Cup-Type Tungsten Heater?Cup-type tungsten heater is a resistive evaporation source formed by precision winding single or multi-strand high-purity tungsten wire into a cup-shaped structure. It is also referred to as a cone-type tungsten heater. It is designed to contain evaporation materials in high-vacuum environments and enable stable vaporization through resistive heating, and is widely used in thermal evaporation coating systems.
2. Features of CTIA’s Cup-Type Tungsten Heater(1) High-temperature resistance: Tungsten’s 3420°C melting point enables the heater to maintain structural integrity under high vacuum and severe thermal loads, preventing deformation and operational failure.
(2) Stable thermal performance: The three-dimensional enclosed geometry stabilizes the heating zone, reducing material spattering and localized overheating.
(3) High loading capacity: The cup-shaped structure provides a larger material holding volume, suitable for medium- to high-load evaporation processes.
(4) Efficient material utilization: Concentrated heat input enhances evaporation efficiency and improves material utilization rate.
(5) Structural stability: High rigidity ensures geometric stability during repeated thermal cycling, reducing deformation or collapse risk.
(6) Low contamination characteristics: Low vapor pressure minimizes impurity release, making it suitable for high-purity vacuum environments.
3. Applications of CTIA’s Cup-Type Tungsten Heater
(1) Precision optical coating: Used for evaporating materials such as magnesium fluoride and silicon dioxide to produce anti-reflection coatings and multilayer optical interference films.
(2) Decorative vacuum coating: Used for metallization of plastic, glass, and metal substrates by evaporating materials such as aluminum and silver to achieve decorative finishes.
(3) Semiconductor and electronic components: Used for deposition of metal electrode layers and trace functional films, ensuring high-precision thin-film formation.
(4) Laboratory research: Used in universities and research institutes for small-scale and multi-material thermal evaporation experiments.
4. Specifications of CTIA’s Cup-Type Tungsten Heater(1) Material: High-purity or doped tungsten wire (≥99.95%)
(2) Structure: Cup-shaped (semi-enclosed)
(3) Wire diameter: 0.1–1.5 mm, customizable
(4) Strand count: 1–10 strands
(5) Cup dimensions: Diameter, depth, and overall size customizable
(6) Surface treatment: Chemical cleaning or electrolytic polishing
With over 30 years of expertise in tungsten heater manufacturing, CTIA GROUP provides advanced engineering design and precision manufacturing solutions. Based on application scenarios and operating temperature, CTIA optimizes key parameters including tungsten wire diameter, strand count, cup geometry, and overall dimensions. Integrated with surface treatments such as chemical cleaning and electrolytic polishing, CTIA delivers full-process customized solutions from design to final production.
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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