Copper Tungsten Finished Parts

Product Specification

Overview

Copper Tungsten Finished Parts are a composite material made of tungsten and copper. Due to their excellent high-temperature resistance, arc erosion resistance, and high electrical and thermal conductivity, they are widely used in aerospace, aviation, electronics, power, and metallurgy industries, particularly in the manufacture of high-temperature components such as high-voltage switch contacts, rocket nozzle throat liners, and EDM electrodes. For information on component ratios, custom processing, and delivery time, please contact us via email. We guarantee to provide our customers with the highest quality products and services.

Copper Tungsten Alloy Properties

• High electrical and thermal conductivity: The addition of copper significantly improves the alloy's electrical and thermal conductivity, ensuring efficient current transmission and rapid heat dissipation, making it suitable for high-frequency electronic equipment and high-temperature environments.
• High strength and wear resistance: It possesses high mechanical strength, toughness, and wear resistance, making it resistant to damage under high loads and repeated operation.
• Excellent arc erosion and ablation resistance: Tungsten's high melting point (approximately 3422°C) prevents the alloy from melting or evaporating under electric arc conditions, extending its service life, especially in welding or switching applications.
• Low coefficient of thermal expansion: The alloy has a low coefficient of thermal expansion, maintaining dimensional stability under temperature changes and reducing deformation or cracking caused by thermal stress.
• High-temperature resistance: It maintains good dimensional stability in high-temperature environments, making it suitable for harsh conditions such as aerospace and power systems.

Copper Tungsten Finished Parts Dimension

Copper Tungsten Electrode Material Application

1. Copper Tungsten Bar

• Electroforming electrodes: Electro-discharge machining (EDM) electrodes, electrolytic machining electrodes, featuring excellent electrical and thermal conductivity with low wear.
• Welding electrodes: Resistance welding electrodes, spot welding electrodes, exhibiting high-temperature resistance and non-stick properties to ensure welding precision and efficiency.
• Mechanical structural components: High-temperature-resistant shafts, valve cores, and inspection probes, combining strength with wear resistance.
• Medical equipment: Radiotherapy shielding rods, medical imaging components, utilising high-density and radiation shielding properties.

2. Copper Tungsten Plate

• Power equipment: High-voltage switch partitions, fuse contact holders, leveraging high-temperature resistance, ablation resistance, and heat dissipation.
• Electronics industry: High-power device packaging, heat spreader substrates, microwave tube heat sinks, meeting demands for high thermal conductivity and structural stability.
• Mechanical & Moulding: Precision mould inserts, wear-resistant liners, extending mould lifespan through high hardness and abrasion resistance.
• Aerospace: High-temperature spacecraft components, radar antenna structural parts, balancing lightweight construction with resistance to thermal shock.

3. Copper Tungsten Contacts

• High/Low Voltage Electrical: Circuit breaker contacts, relay contacts, contactor contacts, offering arc erosion resistance and reliable switching.
• Automotive Electrical Systems: Automotive relay contacts and ignition system contacts, designed for high-frequency switching and harsh operating conditions.
• Rail Transport: High-speed rail traction system contacts and signalling system contacts, capable of withstanding high currents and vibratory environments.
• Industrial Control: Core contacts for industrial relays and contactors, ensuring stable operation of control systems.

Tungsten Copper Products Process

① Select high-purity tungsten and copper powders, and mix them according to the designed composition ratio (e.g., W70Cu30, W80Cu20, etc.).

② Use mechanical mixing (e.g., ball milling) or atomized mixing, adding a small amount of forming agent to ensure uniform dispersion of tungsten and copper powders and avoid component segregation.

③ Select the molding method according to the product shape. Plates are commonly molded by compression molding, rods are extruded or isostatically pressed, and small contacts are powder injection molded.

④ Melting and high-temperature sintering (1100-1300℃, hydrogen protection) melts the copper powder and fills the gaps in the tungsten powder, forming a dense alloy.

⑤ Perform machining operations such as turning, milling, rolling, or drilling according to customer's size requirements to meet dimensional accuracy and surface finish requirements.

⑥ Surface treatment (polishing, electroplating) and heat treatment are performed to improve performance, and quality inspection is carried out throughout the entire process.

Copper Tungsten Finished Parts Pictures

Packing