Superb Performance and Fundamental Classification of Graphite

Graphite, a type of non-metal material, is carbon crystalline with slivery colour, soft quality and metal luster. At present, graphite, typically as Isostatic Graphite has gotten wide application in metallurgy, mechanism, electric, chemical industry, textile, national defense and such industrial departments. Then, what superb performances graphite possesses make it outstand in every day application? Beneath, let’s come to them.

For 1 thing, it's the performance of high temperature resistance and higher strength resistance also as high thermal conductivity and electrical conductivity. Graphite is 1 of presently known material of highest temperature resistance. In metallurgy, graphite is used to manufacture graphite crucible. In steel production, it is utilized as protective agent for steel ingot and liner in metallurgic furnace. To be exactly, it has electrical conductivity 4 occasions greater than stainless steel, two occasions greater than carbon steel and one hundred times higher to carbon block such non-metal. Also, it has greater thermal conductivity than metal material like steel, iron and lead, which decreases in higher conductivity coefficient with the temperature raise.（Cz Crystal Grower）

For the second, it is the overall performance of excellent lubrication, plasticity and great chemical stability. Graphite has friction coefficient less than 0.1, which tends to make it feasible to spread out into ventilate and transmitting slice. Graphite is frequently utilized as lubricant agent in mechanical industry. A great deal of gear transporting erosive medium widely apply graphite material for manufacturing piston cup, sealing ring and bearing. When they operate, it’s totally free of lubrication oil. With characteristics of erosion resistance, good conductivity and low permeability, photovoltaic graphite following peculiar processing is widely applied in petrochemical business, hydrometallurgy, acid-base production, compound fiber and papermaking such industrial departments which save a lot of metal material.（Non Ferrous Continous Casting）

For the third, it is the overall performance of higher fusion point, stability and erosion resistance. Graphite is extensively applied in atomic energy business and national defense business. Because the decelaration material, a kind of impetus in atomic power industry, graphite consists of superb neutron decelaration agent to become applied in atomic power business. Uranium-graphite reactor is a kind of atomic reactor with a lot wide application at present. For graphite orientated to atomic reactor, graphite purity is extremely required which requires impurity content material to become less than tens of PPM and boron content material less than 0.5PPM.

Graphite is widely applied in industrial production for all these outstanding performances. Follows, let’s further come to discover concerning the classification of graphite.

Type 1, natural graphite. According to crystalline station of graphite, natural graphite can be classified into three kinds, flaky graphite, blocky graphite and amorphous graphite. Flaky graphite, some like carbon graphite sheet primarily exists in gneiss or marbles such initial class metamorphic rocks which create from carbon wealthy sediment metamorphism. Graphite block, with strong moulding capability, is really a type of very pure graphite which primarily consists in stratified rocks improvement by magma solidification. Amorphous graphite is really also composed of graphite crystal whose primary function is for manufacture in fire resistant material, coating material and lubrication.

Kind two, artificial graphite. In the business, the production of artificial graphite primarily takes strong or liquid graphitic carbon-rich material as the raw material. Within the condition of indifferent gas and catalyst, artificial carbon material is created following pure pyrolysis therapy and then turns into artificial graphite. Carbon graphite processing method consists of direct and indirect two methods. After thermo-technical and chemical treatment such improvement in graphite processing method, high purity graphite is acquired(Electric Discharge Machining).