2023-11-21

Material characteristics of graphite powder

Graphite powder is a substance that is very sensitive to chemical reactions. In different environments, its resistivity will change, which means its resistance value will change. However, there is one thing that does not change. Graphite powder is one of the good non-metallic conductive substances. As long as the graphite powder is kept uninterrupted in an insulated object, it will also be electrified like a thin wire. However, there is no accurate number for the resistance value, Because the thickness of graphite powder varies, the resistance value of graphite powder will also vary when used in different materials and environments. Due to its special structure, graphite has the following special properties:1) High temperature resistant type: The melting point of graphite is 3850 ± 50 ℃, and the boiling point is 4250 ℃. Even after being ignited by an ultra-high temperature arc, the weight loss and thermal expansion coefficient are very small. The strength of graphite increases with te

2023-10-27

Characteristics of graphite crucibles

Graphite crucibles have good thermal conductivity and high temperature resistance. During high-temperature use, their coefficient of thermal expansion is small, and they have certain strain resistance for rapid heating and cooling. Strong corrosion resistance to acid and alkaline solutions, with excellent chemical stability. Graphite crucibles, due to their excellent performance, are widely used in industries such as metallurgy, casting, machinery, and chemical engineering for the smelting of alloy tool steel and the melting of non-ferrous metals and their alloys. And it has good technical and economic effects. The production of domestic graphite crucibles has reached or even exceeded that of imported crucibles:1. The high density of graphite crucibles enables them to have good thermal conductivity;2. The graphite crucible has a specially made and dense molding material on its surface, greatly improving the corrosion resistance of the product and extending its service life;3. The ther

2023-12-14

What are the characteristics of graphite bearings?

Graphite bearings are important high-temperature bearings that utilize the self-lubricating, high-temperature resistance, and chemical inertness of graphite materials to operate under high temperature and strong corrosion conditions that ordinary bearings cannot withstand. The main functions of graphite bearings are:

2023-05-10

Scales graphite has the cause of lubrication and the conditions of use

Scales graphite has many high -quality characteristics, especially good lubrication, so that it is widely used in many fields. Why is the scales graphite good lubricating, and under what conditions are better lubricating performance? Graphite manufacturer Xiaobian will analyze in detail for you:1, scales graphite is lubricated.The scales graphite played its good lubrication when there is water vapor and air. The presence of water and air enables the surface of the scale graphite to absorb water and gas molecules, which increases the distance between the sliding solution and weakens their binding force. On the one hand, the adhesion is also provided by the free keys on the edge of the base surface of the scales. Because water and gas molecules occupy these free keys, the adhesion force is reduced. This is why the scales are lubricated.2, scales graphite lubricating conditions.Scale graphic can only have good lubrication only in the case of water and air. For example, in a thin high alt

2023-02-22

What are the characteristics of pre -immersed graphite board

The pre -immersed graphite board manufactured by our company uses high -quality graphite carbon raw materials, plus organic chemical complexes with strong alkali resistance. It is made of compression, vacuum pump pre -immersing, and high -temperature thermal treatment methods. It has an extraordinary acid resistance and thermal resistance. It is the idealized lining raw material for machinery and equipment such as ammonium sulfate reflection slot and ammonium sulfate storage slot in the chemical manufacturing industry.Pre -immersed graphite board has the following features:1. High -quality corrosion resistanceGraphite board uses high -quality graphite carbon materials, coupled with strong alkali resistance organic chemical complex, reasonably lowered the pore rate of the product and enhances the volume density of the product. Therefore Strong wear resistance.2. Stable characteristics, strong durabilityThe pre -immersed graphite board uses high -strength organic chemical glue for fusio

2023-11-27

Graphite powder from graphite manufacturers

Graphite powder produced by graphite manufacturers is a widely used industrial material, which is obtained by crushing, grinding, and screening high-purity graphite through rolling. The key to the type of graphite powder is the particle size, which varies from 50 to 30000 mesh. The more mesh the screen, the finer the particle size, and the higher the price. Previously, our country's technological strength could not be achieved, and high-end graphite powder relied on imports. However, at present, Chinese manufacturing enterprises have introduced cutting-edge overseas powder mills, which can produce fine graphite powder with global particle size and have been applied in many industries both domestically and internationally.Graphite manufacturers offer various types of graphite powder, including lubricating graphite powder, conductive graphite powder, nanotechnology graphite powder, high-purity graphite powder, and graphite powder screens with mesh sizes of 150, 425, 1000, 3000, 5000, 65

2023-12-06

The difference between graphite and coal

There are differences between graphite and coal in the following four aspects:Composition and structure: Graphite is composed of carbon elements, and its structure is composed of face centered cubic crystal structures. Carbon atoms are connected by strong covalent bonds. Coal, on the other hand, is mainly composed of alkyl groups and aromatic rings, with alkyl groups containing more hydrogen elements.Physical properties: Graphite has excellent conductivity, which is comparable to metals such as copper and silver. Coal, on the other hand, is a type of sedimentary rock containing carbon, which has the characteristics of providing thermal and chemical energy.Usage: Graphite is widely used in the manufacturing of pencil leads, electrodes, refrigerants, ships, anti-corrosion coatings, and lithium batteries due to its conductivity and other excellent properties. Coal, on the other hand, is mostly used as a biofuel and is widely used in fields such as power generation, barbecue, and water he

2023-03-27

What is the ultra -fine graphite powder used in industrial production

Today, the editor of Qingdao Risheng Graphite will tell you what the ultra -fine graphite powder has in industrial production, I hope to help everyone.

Fluorine

Graphite structure composition

Graphite is a transitional crystal between atomic crystals, metal crystals, and molecular crystals. In the crystal, covalent bonds are formed by sp2 hybridization between carbon atoms on the same layer. Each carbon atom is connected to three other carbon atoms, and six carbon atoms form a regular hexagonal ring on the same plane, extending to form a layered structure. Carbon atoms in the same plane each have one p orbital left, which overlaps with each other to form delocalized π - bonds. Electrons can freely move in the lattice and be excited, so graphite has a metallic luster and can conduct electricity and heat transfer. Due to the large distance between layers and the low bonding force (van der Waals force), each layer can slide, resulting in a lower density of graphite compared to diamond, a softer texture, and a smoother texture. [1]The distance between each layer of graphite is 3.40 Å, which is combined by van der Waals forces. The layers belong to molecular crystals, and the d