Production process and product advantages of C18150 copper rod:

Production process

Vacuum casting and water seal extrusion technology

The vacuum casting process is used to reduce impurities and oxidation, and the extrusion blanking and solution treatment are combined with the water seal extrusion technology. The solution effect is optimized by controlling the extrusion temperature, speed and water temperature and other parameters, which significantly improves the yield rate and achieves energy saving and environmental protection. This process avoids the tediousness of traditional secondary heating and quenching, and improves production efficiency.

Solution-aging treatment

Material properties are strengthened through the "solution-aging" effect: the alloy elements are evenly distributed in the solution stage, and then the strengthening phase is precipitated by aging treatment, further improving the hardness, conductivity and thermal stability.

For example, the solution temperature is controlled at 900-1000℃, and the aging temperature is 400-450℃.

Cold working and continuous extrusion

Cold working (such as cold drawing, cold rolling) and continuous extrusion processes can refine the grains and improve the mechanical properties. Studies have shown that when the diameter is reduced to 8mm after extrusion, the material hardness, tensile strength (523MPa) and wear resistance are optimal.

Surface treatment and processing control

After processing, strong corrosion, weak corrosion, water washing and passivation treatment are required to enhance corrosion resistance, and high-temperature welding should be avoided to prevent performance loss.

Product advantages

Excellent physical properties

High electrical conductivity and thermal conductivity: electrical conductivity of 80–85% IACS, thermal conductivity of 320W/m·K, suitable for scenarios with high current and high heat dissipation requirements (such as resistance welding electrodes, conductive parts).

High hardness and strength: hardness HRB 75–83, tensile strength 450–550MPa, excellent wear resistance, can withstand high-load working conditions.

High temperature resistance and softening resistance

The softening temperature exceeds 500℃, and the performance can still be maintained stable in high temperature environment, which is better than pure copper (200℃) and silver-containing copper (350℃).

Good processing and welding performance

Supports conventional machining, cold heading, bending and other processes, with good welding performance (gas shielded welding is recommended), but oxyacetylene welding should be avoided.

Corrosion resistance and diverse applications

Resistant to atmospheric and seawater corrosion, excellent anti-oxidation performance, suitable for automotive welding electrodes, molds, high-voltage switch contacts, high-speed rail motor end rings and other fields. Compared with C18200, it has stronger deformation resistance and less adhesion.

Compliant with international standards

Meets ASTM B196, RWMA Class 2, ISO5182 and other standards to ensure global compatibility.