Production process and product advantages of W75Cu25/WCu75/CuW25 copper rods:

1. Production process

Powder metallurgy and solution infiltration process

Mainly made of high-purity tungsten powder and copper powder through static pressing, high-temperature sintering and solution infiltration of copper. This process ensures the density and uniformity of the material through steps such as powder pressing, sintering, and copper liquid infiltration. For example, CuW75 alloy achieves high density (14.50g/cm³) and stable mechanical properties through this method.

Rotary forging method

For WCu25 alloy wire, static pressing combined with rotary forging technology is used, processed at an initial temperature of 700-750°C, and the deformation is controlled (0.4mm per pass before 25%, and 0.3mm afterwards), and finally a high-performance wire with a density of 98.16% and a conductivity of 39.2% IACS is obtained.

Continuous casting and extrusion process

International large-scale enterprises use large-tonnage horizontal continuous casting furnaces to produce copper ingots, which are then processed into copper rods through reverse extrusion machines and finished with combined drawing technology. Domestic enterprises such as Boway Alloy use advanced continuous casting, extrusion and drawing equipment to ensure high precision and efficient production.

Low-cost short process

To reduce costs, single-mode electromagnetic casting copper-clad steel bad bars can be used, combined with the broaching machine straight drawing process to reduce material waste and improve efficiency, suitable for cost-sensitive applications such as grounding rods.

2. Product advantages

Excellent physical properties

High density and hardness: W75Cu25 density reaches 14.5-16.8g/cm³ (different processes may produce differences), hardness is not less than HB195, and some products can reach 252HV.

Electrical conductivity and thermal conductivity: electrical conductivity 38-39.2% IACS, thermal conductivity 200-230 W/m·K, suitable for electrodes and high temperature environments.

High temperature resistance: softening temperature ≥900°C, outstanding arc erosion resistance, suitable for resistance welding electrodes and high-voltage discharge tubes.

Advantages of processing and customization

Easy to cut and process, ordinary machine tools can be used for forming, but attention should be paid to the processing control of sharp-angled thin-walled structures.

Support customized sizes (such as 8×8×300mm bars) and shapes (discs, special-shaped materials, etc.) to meet diverse needs.

High surface finish, some products have passed ISO9001 certification, and the quality is stable.

Wide application areas

Electrode materials: used for resistance welding and electrospark machining, with low loss and high precision.

Electronic packaging: low thermal expansion coefficient (9.0-9.5×10⁻⁶/K) and high thermal conductivity, suitable for electronic component packaging needs.

High temperature industry: suitable for rare earth metal electrodes, glass kiln electrodes and ion implantation components, resistant to thermal shock and mechanical load.

Environmental protection and economy

Some processes (such as short process drawing) reduce scraps and energy consumption, and meet environmental protection requirements.

Provide factory direct sales and wholesale services, with strong price competitiveness and short delivery cycle (such as within 10 days).