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Copper and copper alloy powders are important raw materials of powder metallurgy products industry. Its usage amount only becomes secondly to the amount of iron. The copper powder is mainly used in the oil-bearing copper and powder metallurgy iron-based parts. On average, content of copper in mixtures of iron powder and Cu powder is about 5%. In 1964, China built the production bases of metallurgical electrolytic copper powder, tin powder, chromium powder, copper powder, copper alloy powder and non-ferrous metal powder. In 2001, an annual output of non-ferrous metal powder is 1320 tons, of which 1030 tons of electrolytic copper powder. Independent research of the technical personnel of enterprises, the development of successful copper powder oxidation treatment technology to promote the improvement of product quality. And the successful development of low pine than the Cu-Sn alloy powder, high-quality high lead and copper alloy powder, ultrafine nickel powder, ultrafine cobalt powder, non-ferrous metal powder products. After development, the production capacity of electrolytic copper powder increased from 300t to 4000t, by a single electrolytic copper powder 17 species of non-ferrous metal powder grades, "water atomization oxidation-reduction technology to produce low-loose than to the successful construction of the copper powder in the pilot production line. It has formed an annual output of large-scale production capacity. Part of the alloying of Cu-Rem diffusion alloy powder preparation process. The 20th century, especially since the 1990s, technological innovations have made great progress. Electrolytic copper powder production in China in 1990 to 1201 tons, 2000 to 3100 tons. A few years ago in the 21st century, 2004 to 6600 tons, doubling over the previous century. The variety and quality has greatly improved. Copper powder and copper alloy powder in the 1990 to 3500 tons (bronze powder (FCu 663) accounted for 90%, it is the peak output.). The annual output of 2100 tons in 2000, six outputs of 2200 tons in 2004, copper powder production decreased compared to 1990, mainly due to high levels of lead, 663 copper powder production declines. Water atomization redox process to produce low bulk density of copper powder, copper alloy powder, the amount listed. Vigorously develop water atomization redox technology process to produce copper powder with electrolytic copper powder with low bulk density characteristics, but also has good mobility of the water atomized copper powder. The process and electrolysis are relatively low energy consumption, low cost, low pollution, copper powder production and development trend of China, Changsha, and Beijing has formed the scale, and the products have been listed. Copper and copper alloy powders produced varieties: low bulk density, high strength pure copper powder. Cu-Rem powder and bearing with high lead, tin copper alloy powder, brass powder, 663 bronze powders. Hangzhou also the introduction of copper-lead alloy powder production line. A variety of high-quality performance copper alloy powder is expanding production. In 2005, because low bulk density of copper powder with atomization oxidation reduction process was put into production, copper powder and manganese powder alloy production is more than doubled and redoubled in 2002. It has reached 4670 tons while the electrolytic copper powder maintains in the more than 6000 tons. In the copper-based powder metallurgy products whose main body is copper powder, mechanical parts copper consumption reaches 5,000 tons in 2005. The amount of friction materials is more than 1300 tons and the amount of diamond tools is 2000 to 3000 tons. In the electrical alloy industry, copper powder dosage is about 200 tons. Copper production and technological progress have played important roles in national economic construction.Source:http://www.mhcmp.com
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