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Carbon carbon composite material due to its excellent thermodynamic properties has been widely used as solid rocket engine nozzle throat liner material, but graphite throat lining material due to the absence of carbon fiber reinforced, low strength, poor thermal shock resistance, low reliability; and multidimensional weaving and integrated felt carbon carbon throat lining, the complex production process, cycle is long, the production cost is higher. Acupuncture has no weft fabric preform due to its internal alternating vertical layer straight pull carbon fiber, greatly improve material X - Y to the mechanical properties of, by paving layer between carbon fiber net fetal Z to acupuncture, improves the strength between layers of materials. The forming process of carbon carbon composite material with…
Graphite powder soft, black gray; greasy feeling, can pollute the paper. Hardness of 1 ~ 2, along the vertical direction with the increase of impurities in its hardness can be increased to 5 ~ 3. Proportion of 1.9 to 2.3. Under the condition of isolated oxygen, its melting point is above 3000 degrees Celsius, it is one of the most temperature resistant minerals. At room temperature the chemical properties of graphite is relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvent; material has high temperature resistant conductive performance, do refractory materials, conductive materials, wear-resistant lubricating material. Material profile Graphite powder soft, black gray; greasy feeling, can pollute the paper. Hardness of 1 ~ 2, along the vertical…
Many kinds of materials have been developed and used in graphite crucibles after many years of high speed development, and the graphite crucibles made of different materials has different characteristics in its application. Graphite crucible materials can be roughly divided into artificial graphite, graphite - clay material and graphite - silicon carbide material. Artificial graphite crucible is made from graphite electrode material. The main component of graphite-clay crucible are natural flake graphite and clay. Now it’s only used in high temperature melting of iron casting and steel casting and the melting of precious metals. Graphite - silicon carbide crucible is made from the natural flake graphite and silicon carbide .Most of the melting of non-ferrous metals such as copper alloy…
