Tungsten Copper Discharge Tube Electrode
1. What's Tungsten Copper Discharge Tube Electrode?
Tungsten copper discharge tube electrode is a key component inside discharge tubes, designed to conduct discharge current and withstand arc impact. It is primarily used in gas discharge protection devices, high-voltage vacuum switching equipment, and spark gap devices. CTIA's tungsten copper discharge tube electrodes are manufactured using powder metallurgy and copper infiltration, combining tungsten's high melting point and arc erosion resistance with copper's electrical and thermal conductivity to maintain structural stability under high temperatures and transient high currents. During discharge, the copper phase melts and vaporizes, absorbing part of the heat and producing a sweating cooling effect that helps reduce thermal shock and electrode erosion.
2. Characteristics of CTIA's Tungsten Copper Discharge Tube Electrode
(1) Resistance to High-Temperature and Arc Erosion: Tungsten's high melting point helps maintain the electrode skeleton under intense arc exposure, reducing surface melting and material loss.
(2) Sweating Cooling for Thermal Shock Reduction: During high-energy discharges, the copper phase melts and vaporizes, carrying away part of the heat and reducing the thermal load on the electrode surface.
(3) Good Electrical and Thermal Conductivity: The copper phase ensures efficient current transfer and rapid heat dissipation.
(4) Low Thermal Expansion and Structural Stability: The tungsten skeleton restricts thermal expansion, reducing deformation during repeated thermal cycles and helping maintain electrode tip geometry and dimensions.
(5) Suitable for High-Energy Discharges: The combination of strength and electrical conductivity enables the electrode to withstand arc impact and repeated discharge loads. Service life depends on discharge energy and operating frequency.
(6) Adjustable Tungsten-Copper Ratios: Material composition can be selected according to discharge energy, operating frequency, and service life requirements.
3. Applications of CTIA's Tungsten Copper Discharge Tube Electrode
(1) High-Voltage Vacuum Switching Equipment: Used as arcing contacts in vacuum switches and circuit breakers, where good arc erosion resistance helps withstand intense arcing during switching operations.
(2) Ceramic Gas Discharge Tubes: Used in gas discharge protection devices for communication, power supply, and electronic equipment. During overvoltage events, the electrodes help establish a conductive path to safely discharge surge current.
(3) Lightning and Surge Protection Devices: Used in gas discharge lightning arresters and surge protection equipment, where electrodes withstand transient thermal loads caused by lightning or surge currents.
(4) High-Power Discharge Equipment: Used in electrode assemblies for high-energy pulsed discharge devices, accommodating short-duration high currents and repeated arc impacts for stable operation.
(5) Composite Discharge Contacts: Certain high-power ceramic discharge tubes adopt a composite structure consisting of a tungsten-copper working layer and an oxygen-free copper base, where the tungsten-copper layer resists arc erosion while the overall unit delivers enhanced electrical and thermal conductivity.
4. Specifications of CTIA's Tungsten Copper Discharge Tube Electrode
(1) Common Materials: CuW70, CuW75, CuW80, etc.
(2) Supply Forms: Round bars, plates, and precision-machined parts.
(3) Dimensions and Tolerances: Customized according to customer requirements.
CTIA GROUP combines nearly 30 years of tungsten copper alloy manufacturing experience with extensive knowledge of powder metallurgy and precision machining. For different discharge conditions and equipment requirements, CTIA offers tailored solutions covering material selection, dimensional design, and precision machining.
For any inquiry, please contact tungsten copper manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: tungsten-copper.com
WeChat:
