The Development Direction of Tungsten Industry in the World - Ⅱ

(3) Tungsten carbide

    Tungsten carbide industry occupies an important position in the national economy. The mainly raw material of cemented carbide is tungsten. According to the pertinent data from U.S., about 50% of the tungsten is used for cemented carbide manufacture. Currently more than 50 countries in the world produce carbide and the annual production is about 2.8 million tons. Developed countries in the world are in a leading position of carbide industry, mainly in the following areas:

    1) Precision dedicated tungsten carbide tools. According to the reports, the large-scale production line of sedan needs a large number of special carbide tools. The statistics data abroad shows that if the annual production capacity is 3 million cars, the requirements of special tungsten carbide tool output value should be $ 200 million to $ 300 million. At present, the productions of precision dedicated tool are basically monopolized by large foreign companies.

    2) Tungsten extrusion technology. For example, the advanced technology of plasticizing extrusion with powder is applied abroad, which is capable to produce ultrafine nanocrystalline carbide cutting tools, and complex shaped products. This technology has very significant economic benefits. For example, the output value of imports carbide bar with screw holes is up to RMB4,000.00/ kg, general ф6mm high-performance hard alloy extrusion bar output value is up to RMB1,000.00/ kg, however, general carbide products output value is only RMB200.00/ kg.

    (3) Nanostructures tungsten carbide. Rutger University took the lead of fluidization thermochemical conversion process (SCP) had successfully developed a nano-structured tungsten carbide cobalt composite powder, and quickly reached the scale of production, the powder grains less than 50 nm. Micro drill, tape cutter, scalpel manufactured by nanostructures  tungsten carbide have two times working life than the currently used microcrystalline alloy products, the nanostructures tungsten carbide will become one of the most popular new materials in the 21st century.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

• < Prev
• Next >