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Characteristics of graphite and its application
发布时间: 2011-05-10 被读次数: 1952
 

  Characteristics of graphite and its application

  It has high strength and high toughness characteristics of fiber reinforced composite material. It has never left the strength and toughness of traditional carbon material, is a new type of biomedical materials have the potential of the name], and has good application prospects in human bone repair and bone substitute materials.

  1, as refractory materials

  One of the main uses of graphite is the production of refractory materials, including bricks, wax, continuous casting powder, casting mold, mold resistant and detergent material. In the past 20 years, two important changes in the refractory industry is MgO-C brick is widely used in steelmaking furnace lining, and the application of aluminum carbon brick in continuous casting process. The graphite refractories and steelmaking refractories are closely linked, the world's steel industry consumes about 70%.

  (1) magnesia MgO-C refractories is the middle of 60s, by 70s, the successful development of the United States, Japan began to MgO-C brick for steelmaking in electric arc furnace cooling water. At present in the world within the scope of MgO-C brick has been widely used in steelmaking, and has become a traditional use of graphite. At the beginning of 80s, began the MgO-C brick used as lining of oxygen top blowing converter. The British used oxygen steelmaking furnace lining materials mostly MgO-C brick, lining

  (2) aluminum carbon brick aluminum carbon refractory material is mainly used for continuous casting slab, a pipeline self protective cover, water nozzle and oil tube blasting etc.. 90% of the total amount of steel produced by continuous casting in Japan

  (3) wax pot forming graphite manufacturing wax pot and related products and refractory and related products, such as wax pot, retort, plug head and nozzle etc., with high fire resistance, low thermal expansion, metal smelting process, by metal infiltration and erosion are stable, high temperature and thermal shock stability the good and excellent thermal conductivity, so the increase of graphite pot and related products are widely used in the process of direct molten metal.

  Graphite flake graphite clay pot wax with the traditional carbon content more than 85% manufacturing, usually graphite flake should be greater than 100 mesh (BSS mesh), and the exhaustion of wax in the production technology is an important improvement, the type, size and quality of graphite flake has greater flexibility; the time is. Wax pot to replace the traditional clay graphite with silicon carbide graphite wax vortex is produced with the introduction of this technology in the steel industry with constant pressure. The constant pressure technology can also make the small flake graphite was used in clay pot by graphite, graphite flake containing 90% carbon accounted for about 45%, while in the SiC graphite wax pot, content of large scale components accounted for only 30%, graphite carbon content is reduced to 80%.

  2, steelmaking

  Graphite and other impurities can be used as the material for the steel industry carburetant. Using carburizing carbonaceous material range is very wide, including artificial graphite, petroleum coke, metallurgical coke and natural graphite. In the world of one of the main uses of steel carbon graphite or amorphous graphite.

  (3) wax pot forming graphite manufacturing wax pot and related products and refractory and related products, such as wax pot, retort, plug head and nozzle etc., with high fire resistance, low thermal expansion, metal smelting process, by metal infiltration and erosion are stable, high temperature and thermal shock stability the good and excellent thermal conductivity, so the increase of graphite pot and related products are widely used in the process of direct molten metal.

  Graphite flake graphite clay pot wax using traditional carbon content more than $5%, usually graphite should be greater than 100 mesh (BSS screen), and the exhaustion of wax in the production technology is an important improvement, the type, size and quality of graphite flake has greater flexibility; it is silicon carbide graphite instead of wax wax after clay graphite pot tradition, which is produced with the introduction of the constant pressure technology in the steel manufacturing industry. The constant pressure technology can also make the small flake graphite was used in clay pot by graphite, graphite flake containing 90% carbon accounted for about 45%, while in the SiC graphite wax pot, content of large scale components accounted for only 3a% stone.

  carbon carbon composite, graphite, graphite felt http://www.cfccarbon.com/

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