Folded Tungsten Boat
What's Folded Tungsten Boat?
Folded tungsten boat is boat-shaped evaporation tungsten boat formed from high-purity tungsten sheet through multiple precise bends, mainly used in vacuum coating equipment requiring frequent thermal cycles. Tungsten crucible is bent from a single tungsten sheet, featuring a central recess for evaporation material and extended ends for electrode connections.
Compared with welded tungsten boat, folded tungsten boat has no welds or heat-affected zones, offering more stable structural strength and uniform thermal field under high temperatures.
Advantages of CTIA’s Folded Tungsten Boat
(1) Structural Stability: Formed from single tungsten sheet without welds, reducing high-temperature cracking risk.
(2) Thermal Deformation Resistance: Low thermal expansion coefficient ensures minimal collapse or deformation under repeated thermal cycles.
(3) Uniform Thermal Field: Folded structure improves heating area stability and prevents local overheating.
(4) Excellent High-Temperature Performance: With a melting point of 3,422°C, tungsten enables stable operation above 1,800°C.
(5) Processing Adaptability: Enables deeper grooves and special folded-edge designs compared with stamped tungsten boat.
Applications of CTIA’s Folded Tungsten Boat
Folded tungsten boat is widely used in semiconductor metallization coating, LED chip electrode evaporation, solar cell thin-film deposition, optical coating, vacuum metallurgy, and scientific research. In demanding vacuum evaporation systems, tungsten crucible maintains stable thermal field, enhancing evaporation efficiency and thin-film uniformity.
Specifications of CTIA’s Folded Tungsten Boat
(1) Purity: ≥99.95%
(2) Density: ≥19.1 g/cm³
(3) Length: 50–300 mm
(4) Width: 7–50 mm
(5) Slot depth: 5–20 mm
(6) Thickness: 0.1–2.0 mm
CTIA GROUP supports customized folded tungsten boat solutions.
CTIA GROUP has over 30 years of experience in tungsten boat manufacturing, providing structural optimization and dimension design tailored to equipment thermal fields and evaporation processes. Strict control of raw material purity, precision machining, and surface treatments such as cleaning, alkaline washing, polishing, and mirror finishing ensure tungsten crucible maintains structural stability and uniform thermal field under high-temperature and high-vacuum conditions, improving evaporation efficiency and thin-film consistency.
For any inquiry, please contact tungsten boat manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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