2023-04-21

What should be paid attention to when processing refractory materials with flake graphite?

Impregnation object and type of impregnating agent

In carbon products, there are several types of products that need to be impregnated:(1) Products with higher density, mechanical strength, and lower resistivity are required. Such as ultra-high power electrodes, various joint blanks, graphite anodes, mechanical carbon products, etc.(2) Impermeable graphite required for chemical equipment. For example, heat exchangers, pumps, chemical pipelines and fittings, sealing rings and sealing rings used on chemical equipment, etc.(3) Products used for producing wear-resistant materials. For example, piston rings, bearings, directional rings, sliding electrical contacts, etc.(4) Products with special requirements. Such as high-density and high-strength graphite.The commonly used impregnating agents include asphalt, synthetic resins, metals, lubricants, inorganic compounds, etc., which can be selected according to the different performance requirements of the impregnating object. When selecting impregnating agents, it is necessary to pay attentio

2023-05-19

Kish graphite structure

The crystal features of KISH graphite are manifested as layer -shaped branches crystal structure, as shown in Figure 1. When the front C is observed, the graphite hexagonal ring is almost overlapped and has branches, and the graphite A direction remains connected.Kishh graphiteFrom the KISH graphite inside the melt, first assembled in the fuse, and then floated to the surface of the liquid to form a volume knot. The KISH graphite directly generated from the surface is assembled on the surface.

2023-09-08

Excellent Electrical Conductivity of Carbon Graphite Materials and Their Applications

Graphite 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

2023-04-07

Graphite powder has the cause of self -lubrication performance analysis

Graphite powder is a wear -resistant material, and its self -lubrication performance is its most important feature. Graphn powder has a good self -lubrication performance due to its special layer -shaped crystal structure. The following are the analysis of the reasons for the self -lubricating property of graphite powder:The carbon atoms in graphite lattles are arranged in hexagonal on different planes. The distance between the carbon atoms in the same plane layer is 1.42 meters, and the distance between the carbon atom of each plane layer is 3.35. They are staggered along the same direction, repeat the position of the first plane in the third plane, the fourth plane repeats the position of the second plane, and so on. In each plane layer, because the carbon atoms are relatively tight, the binding forces between them are relatively large, and the carbon atom between layers and layers is far from each other, which is easy to separate and relatively slide. This is the main reason why gr

2023-04-19

Causes of inflated graphite powder

1. The purity of the selection of raw materials for the selection of nuclear high pure graphite is the same as the prerequisite for production, and it is related to the ash component of the raw materials selected by the production. The civilian type can expand graphite products that are that regularity: raw materials are ash, and their products are also large. Therefore, the oil coke ash selected by the production nuclear high -pure graphite specifies the mouth. 15%of the following, although the boron component proposes the requirements, it will be analyzed, and the specific data information will be 0.5pp. the following. Results The total ash was divided into 5 PPMs, and the boron components were mouth. LPPM up and down, the section of the hot neutron absorption is 3.8, 94 mubes. 2. High temperature adjustment treatment and other halogen to solve the temperature of the temperature when the graphitization of the product, and whether it carried out another halogen solution, which is a f

2023-11-23

What are the uses of graphite powder

Graphite powder is a widely used chemical raw material in our modern industry. What are the uses of graphite powder? Let's take a look together.What are the uses of graphite powder1. Used as a demolding lubricant in the production of catalysts in the fertilizer industry.2. High temperature resistant lubricant base material, corrosion-resistant lubricant base material.3. Powder metallurgy release agents and metal alloy raw materials.4. Used for making carbon film resistors, conducting dry molds, and preparing conductive liquids.5. Make fillers or performance modifiers for rubber, plastic, and various composite materials to improve their wear resistance, compression resistance, or conductivity.

2023-06-05

Immersion graphite

Plug -in graphite, also known as immersive graphite or immersion immersion graphite. Category of non -transparent graphite.Immersion graphitePinyin: jinzishimoEnglish name: ImpregNated GraphiteNote: Use synthetic resin to penetrate graphite to fill its surface and internal pores, and then make the heat treatment to curing the resin and make it. Compared with graphite, mechanical strength is improved and thermal conductivity is unchanged. With the difference in penetrating resin, there are different varieties such as phenolic graphite and bran glycoling graphite.

2024-04-23

Graphite, the Power of Tranquility

Graphite, seemingly ordinary, contains the power of tranquility. It is not ostentatious or ostentatious, but silently supports the backbone of modern industry. Whether it is steel smelting or new energy development, graphite provides solid support for industrial development with its stable performance and outstanding characteristics.The power of graphite is also reflected in its contribution to the environment. As an environmentally friendly material, graphite plays an important role in replacing traditional high polluting materials. Its use not only reduces energy consumption and waste emissions, but also promotes the development of green industries.The power of graphite is also a spiritual force. It represents resilience and perseverance, reminding us to remain calm and firm in the face of difficulties and challenges. Let us work together to explore the greater potential of graphite and contribute more to the progress and development of humanity.

2023-08-22

Methods and Classification of Carbon Graphite Mechanical Processing

The 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