Recovery types

Scrap copper recycling

Scrap copper recycling

  Elemental copper is copper, is so named because its color is purple. Various properties of copper. Copper is pure copper, the melting point is 1083 degrees Celsius, no, relative density is 8.9 mg five times. Heavier than ordinary steel or 15%. It has a rose-red, after the surface oxide film purple, it is commonly referred to as copper. It contains some copper oxide, also known as oxygen-containing copper.
&Nbsp;  copper is so named because was purple. It is not necessarily pure copper, sometimes adding a small amount of deoxidizing elements or other elements in order to improve the performance of materials and
And, therefore, classified. China's copper processing materials in components can be divided into: ordinary copper (T1T2, T3, T4), (TU1, TU2, high purity, vacuum and oxygen-free copper), Deoxy copper (TUP, and TUMn), add a small amount of special copper alloy elements (arsenic, copper, tellurium copper, silver and copper) in four categories. Electrical conductivity and thermal conductivity of copper behind silver, is widely used in making electrical conductivity, thermal conductivity equipment. Copper in the atmosphere, water and some non-oxidizing acids (hydrochloric acid, dilute sulfuric acid), alkali, salt solutions and a variety of organic acids (acetic acid, citric acid), has a good corrosion resistance, for the chemical industry. In addition, copper has good weldability, cold, semi-finished and finished products made of thermoplastic processing. In the 1970 of the 20th century, the copper output more than the production of other types of copper alloys.
Trace impurities in copper to copper electrical conductivity, thermal conductivity have a severe performance impact. Titanium, phosphorus, iron, silicon and significantly reduce the conductivity, while cadmium, zinc and other effects are small. Oxygen, sulfur, selenium, tellurium in copper solubility is very small, with copper to produce brittle compound, has little effect on conductivity, but can reduce the processing of plastic. Average copper in hydrogen or heated in reducing atmosphere of carbon monoxide, hydrogen or carbon monoxide and grain boundary of cuprous oxide (Cu2O), produces a high pressure steam or carbon dioxide, copper can be broken. This phenomenon is often referred to as copper "hydrogen". Harmful oxygen on weldability of copper. Generate low melting point eutectic lead-bismuth or copper, copper hot short and brittle bismuth is a film distribution when the grain boundary, and copper to produce cold and brittle. Phosphorus could significantly reduce the conductivity of copper, but copper can improve the liquidity, improved weldability. Right amount of lead, tellurium and sulfur to improve machinability. Room temperature tensile strength of annealed copper plate was 22~25 kgf/mm 2 elongation 45~50%, Brinell hardness (HB) for 35~45.
Has excellent electrical conductivity, thermal processes, ductility and corrosion resistance. Mainly used for making generator bus ﹑ ﹑ cables, switchgear, transformers and other electrical equipment and heat exchangers, pipe processes, thermal conductivity equipment such as solar heating systems flat panel. Into brass, and bronze copper alloy, copper-nickel alloy commonly used categories.
Pure copper is purple-red metal, commonly known as "red", "white copper" or "copper."
Copper rich ductility. Like a drop of water the size of pure copper, you can pull into a two-filament, or rolled into bigger than the bed almost transparent foil. Very good conductivity of copper is the most valuable properties, second only to silver in the all metal. But copper is much cheaper than silver, so the electrical industry "hero".
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