Small-gauge copper wires are prone to oxidation during storage and use, which can lead to reduced conductivity, poor contact, and even shortened service life. Here are some common ways to prevent oxidation:<\/p>
Choose oxygen-free copper or high-purity copper (such as T2 copper), which has a low oxygen content and is not easily oxidized.<\/p>
If copper clad aluminum (CCA) or copper clad steel (CCS) materials are used, ensure that the surface copper layer is thick enough to avoid rapid oxidation.<\/p>
Tin plating: Tin plating on the surface of copper wire can form a protective layer, effectively preventing copper oxidation and improving welding performance.<\/p>
Coating protection:<\/p>
Apply antioxidant (such as antioxidant oil, special anti-rust oil).<\/p>
Apply an oxidation-resistant paint (such as polyurethane paint) to block out air and moisture.<\/p>
Phosphating: helps improve corrosion resistance and is commonly used for copper wire for industrial purposes.<\/p>
Avoid humid environment: the storage humidity should be controlled below 40% to prevent the moisture in the air from oxidizing the copper.<\/p>
Avoid high temperatures: Keep the temperature below 25\u00b0C to avoid accelerated copper corrosion due to thermal oxidation.<\/p>
Sealed packaging:<\/p>
Store in vacuum packaging or sealed plastic bags.<\/p>
Using moisture-proof bags or sealed barrels to store can effectively isolate the air.<\/p>
Desiccant can be placed inside the package to reduce the impact of moisture.<\/p>
Keep away from corrosive substances:<\/p>
Avoid contact of copper wire with acid, alkali, salt and other chemical substances such as sulfur, chlorine, etc.<\/p>
Keep away from battery and chemical product storage areas to avoid chemical reactions that accelerate oxidation.<\/p>
Avoid exposure: Wrap with plastic film, carton or rust-proof cloth during transportation to avoid contact with air.<\/p>
Reduce friction: Use foam or soft materials to isolate to prevent scratches during transportation. Scratched areas are more susceptible to oxidation.<\/p>
Prevent rain: Use waterproof covers or sealed packages during transportation to avoid moisture and oxidation.<\/p>
Control the production environment: Maintaining a low humidity and low oxygen environment can reduce the time the copper wire is exposed to the air.<\/p>
Use antioxidant oil: Apply antioxidant oil to the copper wire after drawing and annealing to form a protective film.<\/p>
Summarize<\/p>
To prevent oxidation of small-sized copper wire, the key is to start from multiple links such as material selection, surface treatment, storage and transportation, and production process. In particular, storage environment control, tinning treatment and anti-oxidation coating are the most effective anti-oxidation methods.<\/p>","protected":false},"excerpt":{"rendered":"
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