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The carburetant are divided into using in steelmaking and iron casting and some other materials are also need the carburetant , such as the additive in brake pads, as the friction material . Carburetant belongs to the external carbon materials in steel and iron smelting. The high quality carburetant is essential agent additive for production of high quality steel. The carburetant has many kinds of raw materials, the production processes also are different, wood carbon, carbon coal, coke, graphite, etc., it has a lot of small types in the various categories . The high quality carburetant generally refers to the graphitization carburetant,under the condition of high temperature, the carbon atoms are arranged in graphite morphology, so it’s called as graphitization.…
The high purity and high strength graphite are commonly used in nuclear reactor and rocket structure material and the parts and devices required in fabrication of high purity metal, semiconductor materials and rare metal . The high purity graphite used in semiconductor consumption , the high purity graphite used in single crystal furnace, the crucible boat and dish of semiconductor materials smelting and the devices in smelting high pure metal . The impurity content of this kind of graphite material is requested by <0.01%; the bulk density is 1.55 ~1.75g/cm3. Its production process is generally the same compared with ordinary graphite process ,but we must choose the ash content is less than 0.05% of the raw materials for the graphite…
In recent years, with the vacuum heat treatment furnace level improving, the vacuum heat treatment won the favorite of some professional people because it has a series of advantages such as degassing, degreasing, anaerobic and automation and so on , but the vacuum heat treatment furnace has a high standard to electric heating element, the deformation, fracture and volatilization of high temperature electric heating element are the important factors of restricting the development of vacuum furnace. In order to solve this problem, we look to the "black gold" graphite. Graphite has the spotless advantages compared with other metal material ,so the graphite, as the heating element, almost can be used in different types of vacuum heat treatment furnace. The advantages…
