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As the top graphite manufacturer of China ,Beijing Greatwall Co,.ltd has widely ranged of graphite products production capacity,includes wide range of carbon and graphite products. The graphite is a good conductor of electricity and heat. It can be made into an excellent resistance heating element in the absence of oxygen. High strength can be maintained even when it is used under high temperature. The graphite matrix binds the reinforcement as a whole and transmits the load to the reinforcement, which enables the chemical vapor deposition to complete successfully. The chemical vapor deposition (CVD) is actually a gaseous mass transfer process in the atomic field. The reacting matters react in the gaseous condition and the produced solid matter deposits on the…
Carbon brushes are critical to the operation of the paper machine with direct current (dc) motors.Worn or failed brushes cost thousands of dollars per hour.Proper application of carbon brushes, for varying conditions, will provide optimal brush life and minimal commutator wear electrographitic and graphite(resin-bonded) are the two carbon brush families used extensively. Electrographitic brushes are made from lampblack or carbon black with pitch and tar binders. The carbon material may be kiln fired twice at 1100 degrees Centigrade to burn off the volatiles. Then,it is placed in electric induction or resistive furnaces to graphitization and the temperatures is about 2600 to 3000 degrees Centigrade. Electrographitic grades can also impregnated with resins to enhance their brush life and improve friction characteristics.…
Graphite Electrode is mainly usded for steel-making in electric furnace,mineral hot furnace and electric resistance furnace.Graphite electrode conducts electric current into the furnace.Electric current produces arc in the smelting district in the electric furnace,when the temperature increase to about 2000℃,smelting begins.Our a series of graphite electrode is applicable to the common furnace and high power furnace with high pressure and short arc. The graphite electrode must be stored in a clean and dry room. If the graphite electrode is pilled up outdoor, it must be covered with the waterproof cloth and the floors of the pile is prohibited more than 4. In the delivery of graphite electrodes, a waterproof cloth must be covered on the graphite electrodes. When workers are…
