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Carbon carbon composite material is reinforced by carbon fiber and matrix carbon,and the quality of the carbon fiber is the key point to the carbon carbon composite material. And the most important process of the carbon fiber graphitization is the graphitization equipment and the high temperature treating technology. Carbon fiber is a fibrous carbon materials, has high specific strength, high specific modulus, high temperature resistance, ablation resistance, fatigue resistance, creep resistance, electrical and thermal conductivity, low density and thermal expansion coefficient and other a series of excellent properties, is advanced composite structures are the most important reinforcing material, is widely used in spacecraft, spacecraft, satellites, military and high-end sports activities. The industrial production of carbon fiber raw materials mainly asphalt…
Is crude oil by distillation light heavy oil separation, heavy oil again by thermal cracking process, and transformed into products, from the appearance, coke was irregular shape, size of massive black (or particles), metallic luster, coke particles with multi pore structure of petroleum coke (PETroleum coke), elements of the main composition for carbon, possession of 80wt% (WT is the abbreviation of weight is the weight percent content. 5WT% is equivalent to 50000PPM ((PPM is in the millions of content. And the rest of the hydrogen, oxygen, nitrogen, sulfur and metal elements. Petroleum coke has its unique physical and chemical properties and mechanical properties, itself is a heating portion of the non-volatile carbon, volatiles and mineral impurities (sulfur, metal compounds, water,…
With the rapid development of the world industry, graphite has been regarded as one of the important industrial mineral raw materials at home and abroad. At present, the graphite dies are widely used in the following aspects: - Graphite dies used for non-ferrous metal continuous casting and semi continuous casting In recent years, the advanced production methods of directly continuous (or semi continuous) producing rods or tubes from the state of molten metal were promoted at home and abroad. We have begun to use this method in domestic copper, copper alloy, aluminum, aluminum alloy and other aspects . Artificial graphite is considered as the most suitable material for continuous casting or semi continuous casting of nonferrous metals. Production practice has…
