2013年8月23日星期五

Introduction and use of tungsten

Tungsten wire  (English TungstenAlloys; abbreviated W-Alloys) (a) Product description: Tungsten gold is rare in the world a colored minerals, annual output is very low, very versatile ingredient of material is mainly used for casting. Tungsten ore from a white sand, ore line especially tiny, after mining, milling, water re-election, refining and other multi-channel technology, get up 95_ above grade tungsten ore, and then through the high-temperature furnace to produce refined shape the finished product is tungsten. Melting point of tungsten: 3500 ℃. Tungsten present mainly in China and Russia, China is now the world's largest exporter of tungsten. Typically the purity tungsten should at 99.95_ or more, and must be issued by authority of the examination and analysis test reports, for example: non-ferrous metals and electronic materials analysis and testing center analysis test report. (Two) Usage: 1, processing car knife blade, tungsten lighting equipment and a variety of thermal conductivity with 2 advanced automobile crankshafts, cylinder ingredients, heat-resistant steel casting various ingredients 3, widely used in firearms, artillery, rockets, satellites, aircraft and ship

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