What is copper wire? What are its applications?

For the above series of questions, many friends are not clear how to answer, the following, and we share the answer to these questions.

Copper wire is actually linear red copper, pure copper is rose red, the metal surface formed copper oxide film after showing purple, therefore, industrial pure copper is often called copper or electrolytic copper.

The red copper fire refining can get 99-99.9% of pure copper, electrolysis can make the purity of copper 99.95-99.99%, density of 8-9g/cm3, melting point 1083 degrees Celsius, pure copper conductivity is very good, a lot of used for manufacturing wires, cables, brushes, good thermal conductivity, Therefore, it is often used to manufacture magnetic instruments and instruments against magnetic interference, such as compass, aviation instruments, etc., and its plasticity is excellent, easy to hot press and cold pressure processing, can be made into tubes, rods, lines, strips, plates, foils and other copper materials, copper wire is one of them.

What is undeniable is that the application of copper wire is very wide, each year, 50% of the copper electrorefining is pure copper, used in the electrical industry, copper here, really have to be very pure, copper content needs more than 99.95%, only very small amounts of impurities, especially phosphorus, aluminum, etc. Will greatly reduce the conductivity of the copper, copper in oxygen a great influence on conductivity, Copper used in the electrical industry must generally be anaerobic copper, in addition, lead, bismuth and other impurities will make the crystallization of copper can not be combined together, resulting in hot brittle, will also affect the processing of pure copper.

This high purity of pure copper, generally refined by electrolysis, the impure copper as anode, pure copper as cathode, copper sulfate solution as electrolyte, when the current through, the anode of the impure copper gradually dissolved, pure copper will gradually precipitate on the cathode, so refined copper purity can reach 99.99%. Copper wire is a relatively pure copper, generally can be approximately considered as pure copper, conductivity, plasticity are better, but here it needs to be explained that its strength and hardness are slightly less than some.