CTIA's Tungsten Heater in Cathode Ray Tube Aluminum Coating
CTIA's tungsten heater in cathode ray tube aluminum coating refers to a critical resistive heating element designed for the vacuum evaporation process of cathode ray tube inner walls. Fabricated from high-purity tungsten wire through precision stranding, coiling, stamping, and surface treatment, the tungsten heater ensures stable evaporation and uniform deposition of aluminum. This process creates a consistent reflective layer on the inner surface of the phosphor screen, essential for manufacturing television tubes, computer monitors, and specialized oscilloscopes.
As film uniformity and cleanliness are critical to cathode ray tube manufacturing, the stability of the heating element directly determines deposition quality. CTIA's tungsten heater delivers the following features to meet these requirements:
(1) Stable thermal field: Uniform heat distribution facilitates consistent aluminum coating across large-area internal surfaces.
(2) Low contamination: Low vapor pressure in high-vacuum environments minimizes metal contamination risks.
(3) High-temperature stability: The structure remains stable under continuous evaporation conditions, effectively resisting deformation.
(4) Controlled resistance: Consistent electrothermal conversion efficiency allows for precise control of aluminum evaporation rates.
Specifications of CTIA's tungsten heater are as follows:
Material: High-purity tungsten wire or doped tungsten wire.
Wire diameter: 0.2~0.8mm, customizable.
Stranding: Single-wire or multi-strand (2, 3, or 4 strands).
Structural forms: U-frame, hump, funnel, coil, customizable.
Surface treatment: Electrolytic polishing or alkaline cleaning.
CTIA GROUP draws on over 30 years of manufacturing expertise to deliver optimized tungsten heater solutions, with strong capabilities in precision control of wire diameter, doping levels, and structural configurations. These specifications are tailored to the operating requirements of vacuum coating equipment, production conditions, and evaporation material characteristics. CTIA provides end-to-end customized services covering material selection, structural design, and advanced manufacturing processes.
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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