2022-11-23
2023-09-181. Used as refractory material: Graphite and its products have properties of high temperature resistance and strength, and are mainly used in the metallurgical industry to manufacture graphite crucibles. In steel, graphite is commonly used as a protective agent for steel ingots and as a lining for metallurgical furnaces.2. High temperature metallurgy industry: Due to the small thermal expansion coefficient of graphite and its ability to withstand changes in rapid cooling and heating, it can be used as a mold for glassware. After using graphite, black metal can obtain castings with precise dimensions, high surface finish, and can be used without processing or slight processing, thus saving a large amount of metal.
2023-09-18The graphite rotor rotating nozzle is made of high-purity graphite. In addition to considering the need to disperse bubbles, the structure of the nozzle also utilizes the centrifugal force generated by stirring the aluminum alloy melt to evenly mix the melt into the nozzle with the horizontally sprayed gas, forming a gas/liquid flow to spray out, increasing the contact area and contact time between the bubbles and the aluminum alloy liquid, and improving the degassing and purification effect.Due to the characteristics of graphite such as self-lubrication, high temperature resistance, and corrosion resistance, graphite materials are made into graphite shaft sleeves, graphite sleeves, and other graphite processing parts with different specifications according to the use of different mechanical equipment. Our company has been engaged in the processing and manufacturing of graphite products in recent years. The most important characteristics of the processing of graphite shaft sleeves and
2023-09-08With the continuous expansion of the application field of graphite materials, more and higher requirements have been put forward for it. Therefore, it is necessary to introduce new supplementary process methods in industrial production to facilitate the acquisition of products with special properties that cannot be obtained using ordinary methods. This process method is the compaction of carbon graphite materials.Carbon graphite material is a porous material, with a densification process that involves filling the pores or coating surface of carbon graphite material with different forms of carbon, metal, alloy, or other non-metallic substances. The purpose of densification process is mainly to improve the density, strength, conductivity, thermal conductivity, corrosion resistance, and wear resistance of the product, and sometimes to ensure that the product is impermeable to gases and liquids. However, there is a limit to compaction, and it is not possible to require all the pores in th
2023-09-08Graphite can conduct electricity because carbon atoms have two 2P electrons with the same spin direction, which are in the valence band (also known as the π band) when in the ground state. When excited, it transitions to the empty conduction band (π * band) above, leaving an equal number of holes in the valence band. Electrons carry negative charges while holes carry positive charges. When subjected to an electric field, electrons and holes move in opposite directions, thus contributing to electrical conduction. Due to the close arrangement of carbon atoms in graphite crystals and the deep degree of electron co-occurrence on the 2P band of each carbon atom, the valence band is wider and can slightly overlap with the upper conduction band. The gap width between them can be reduced to 0.01eV. Therefore, as long as the electrons in the valence band are slightly excited, they can transition to the conduction band, leading to an increase in conductivity. Therefore, the resistance of carbon
2023-09-07The processing methods for different types of carbon graphite products are different. In summary, the mechanical processing methods for carbon graphite products include: turning, drilling, planing, grinding, milling, cutting, and others.Car: mainly used for processing circular surfaces, such as the inner and outer circles of the car; In addition, it is used for threading, and can also be used for flat end faces, boring, and cutting. The commonly used machine tool is a lathe, which processes products such as steel making and submerged arc furnace electrodes, mechanical carbon graphite bearings and sealing rings, various small carbon rods, graphite crucibles, and graphite tubes for movies, batteries, and electric arcs.Planing and milling: Mainly used for machining flat surfaces, commonly used machine tools include planing and milling machines. Mainly used for processing graphitized anodes, chemical anode plates and various carbon blocks, hard alloy sintering boats, plates, pallets, meta
2023-09-07(1) Used for electric arc steelmaking furnaces. Electric furnace steelmaking is a major user of graphite electrodes. Electric furnace steelmaking uses graphite electrodes to introduce current into the furnace,Utilize the high-temperature heat source generated by the arc between the electrode end and the furnace material for smelting.(2) Used for submerged arc furnaces. The submerged arc furnace is mainly used for the production of industrial silicon and yellow phosphorus, and its characteristic is that the lower part of the conductive electrode is buried in the furnace material,Arc is formed within the material layer and the heat energy emitted by the resistance of the furnace material is used to heat the furnace material. A submerged arc furnace with a high current density is requiredGraphite electrodes are required.(3) Used for resistance furnaces. The graphitization furnace for producing graphite products, the furnace for melting glass, and the electric furnace for producing silico
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