国产真实乱子伦精品_久久综合亚洲色_伊人久久大杳蕉中文无码_亚洲AV无码AV吞精久久-无码精品日韩专区久久,成人免费高清A级毛片观看网站,自拍偷拍日韩,欧美国产伦久久久久久久

News

News

Location: Home > News > News

What is pure copper?

Time:2016-06-02 18:49:47 Source:江西保太集團(tuán)-江西保太有色金屬集團(tuán)有限公司 View Rate:9370

Summary:
Pure copper is rose red metal, which is purple after the surface forms a copper oxide film. Therefore, industrial pure copper is often called copper or electrolytic copper. The density is 8-9 g/cm3 and the melting point is 1083 °C. Pure copper has good conductivity and is widely used in the manufacture of wires, cables, brushes, etc.; it has good thermal conductivity and is commonly used to manufacture magnetic instruments and instruments that require anti-magnetic interference, such as compasses, aviation instruments, etc.; plasticity is excellent, easy to heat Pressure and cold pressure processing, can be made into tubes, rods, wires, strips, strips, plates, foils and other copper. Pure copper products are available in both smelted and processed products.