Polishing copper rod is a type of copper material that has undergone surface finishing, with a smooth and shiny appearance and excellent electrical and thermal conductivity. The following is a detailed introduction about polishing copper rods:

1. Main features

High surface finish: Remove surface defects through mechanical polishing or chemical polishing to achieve a mirror or matte effect.

Excellent conductivity/thermal conductivity: The conductivity of pure copper (such as T2 purple copper) can reach 100% IACS (International Annealed Copper Standard).

Corrosion resistance: After surface oxidation, a protective film is formed to extend the service life (if corrosion resistance needs to be enhanced, tin plating or nickel can be used).

Good plasticity: easy to further process (such as bending, cutting, welding).

2. Common materials

Purple copper (pure copper): such as T1 and T2, with a purity of ≥ 99.9% and the best conductivity.

Brass (copper zinc alloy): such as H62, H65, with high hardness, balancing strength and decorative properties.

Bronze (copper tin alloy): It has good wear resistance and is commonly used in mechanical components.

3. Processing technology

Mechanical polishing: Use a grinding wheel, sand belt, or polishing wheel to gradually polish until smooth.

Chemical polishing: Dissolving surface impurities in acidic or alkaline solutions to achieve uniform gloss.

Electrolytic polishing: Electrochemical methods improve surface flatness, suitable for high-precision requirements.

4. Application Fields

Electronic and electrical: wire terminals, switch components, transformer windings.

Decoration engineering: lighting fixtures, furniture accessories, building decorative strips.

Mechanical manufacturing: bearings, valves, precision instrument parts.

Heat exchange system: radiators, condenser tubes, etc.

5. Specification parameters

Diameter range: usually from Φ 1mm to Φ 150mm (customizable).

Length: Standard 1m~6m, or cut as needed.

Surface roughness: Ra ≤ 0.8 μ m (mirror polishing can achieve Ra ≤ 0.2 μ m).

6. Precautions

Anti oxidation: It is recommended to seal the packaging or apply anti rust oil during storage.

Avoid scratches: When handling, it is necessary to protect the surface smoothness.

Selection suggestion: Choose pure copper according to the conductivity requirements, and choose brass/bronze for structural components

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