Advantages of Tungsten Carbide Tubes as Electrode Tubes

Tungsten carbide tubes (primarily tungsten-copper alloy tubes or pure tungsten tubes) are high-performance electrode materials, particularly suitable for EDM, resistance welding, and high-temperature discharge applications. Considering their physical and chemical properties, their key characteristics and advantages are as follows:

1. Core Features

Extreme Temperature Resistance: High melting point and structural stability at high temperatures, significantly superior to ordinary metal electrodes

High Strength and Density: Exceptional deformation resistance, capable of withstanding high-voltage arc shocks without deformation

Excellent electrical and thermal conductivity: Electrical conductivity of approximately 42% IACS (tungsten copper tube) ; good thermal conductivity

Wear and Corrosion Resistance: Service life exceeding 1,500 hours with low wear

2. Core Advantages‌

‌Low-loss machining‌: Optimized for EDM machining of hard materials

‌Arc erosion resistance‌: Resistant to high-temperature arc erosion, with a stable electrode shape, suitable for high-speed welding

‌High compatibility and precision‌: Supports processing of 0.02–0.33 mm thin wires

‌Excellent thermal stability‌: Maintains low thermal expansion at high temperatures, preventing thermal deformation of the workpiece

3. Typical Application Scenarios‌

Electro-spark electrodes: Used in tungsten steel mold processing, they address the large discharge and slow speed issues of conventional electrodes, improving machining accuracy and efficiency.

Resistance welding electrodes: Used in the automotive and aerospace industries, they reduce marks and improve weld quality when welding high-strength steel.

High-temperature components: Used in single-crystal furnace thermal field supports and nuclear reactor cladding materials, leveraging their radiation and thermal shock resistance.