Tungsten-copper electrodes

Model No.: JDTG-TC-103

Brand: ZZJD

Place Of Origin: China

Size: Support customiztion

Material: Tungsten

Lead Time: 30 days

Tungsten-copper (W-Cu) electrodes are composite materials made by powder metallurgy, combining the high melting point, excellent electrical conductivity, and arc resistance of tungsten with the high thermal conductivity and good machinability of copper. They are widely used in high-temperature, high-current electrical discharge scenarios where pure metals fail to meet performance requirements.

Core Properties of Tungsten-Copper Electrodes

Tungsten and copper are immiscible (do not form alloys at the atomic level), so the composite retains the advantages of both components:

Common tungsten content ratios: 70%W-30%Cu, 80%W-20%Cu, 90%W-10%Cu — higher tungsten content improves arc resistance, while higher copper content enhances thermal conductivity.

Key Applications

1. Tungsten-copper electrodes are irreplaceable in high-energy electrical equipment due to their unique performance:

2. Electrical Discharge Machining (EDM): Used as EDM electrodes for processing hard metals (e.g., tungsten steel, titanium alloys) and precision molds. The high thermal conductivity of copper quickly dissipates heat from the discharge area, avoiding electrode burnout.

3. Welding Electrodes: Applied in resistance welding (e.g., spot welding of thin metal sheets) and plasma arc welding. They resist arc erosion and maintain stable current transmission.

4. High-Voltage Switchgear: Used as contact electrodes in circuit breakers, load switches, and lightning arresters. They withstand arc impact during switching and have low contact resistance.

5. Aerospace & Military: Used in rocket engine ignition electrodes, radar microwave components, and nuclear reactor thermal conductivity parts, adapting to extreme environments of high temperature and high pressure.

Advantages Over Pure Tungsten or Copper Electrodes