2023-09-05

The purpose and function of graphitization

Graphitization is a high-temperature heat treatment process in which the roasted product is placed in a high-temperature furnace and heated to a temperature above 2300-2500 ℃ in a protective medium, transforming the hexagonal carbon atom plane grid from a two-dimensional disordered arrangement to a three-dimensional ordered graphite structure.Its purpose and function are:1. Improve the thermal and conductive properties of materials;2. Improve the thermal stability, thermal shock resistance, and chemical stability of materials;3. Improve the lubrication and wear resistance of materials;4. Remove impurities from the material and improve purity;5. Reduce the hardness of the material to facilitate mechanical processing.

2023-05-04

Why add graphite powder to glass fiber?

Glass fiber enhanced plastic (FRP) is a composite composite material based on synthetic resin. It has the advantages of light weight, high strength, corrosion resistance, microwave transmission, electrical insulation, and reasonable performance design according to requirements. It has been widely used in aerospace, petrochemicals, transportation, construction, shipbuilding, machinery, environmental protection, textile and other fields. Glass fiber enhanced plastic (FRP) has good electrical insulation property. Under normal circumstances, the amount of graphite powder is 2.5 ~ 5%, which can reach 30 ~ 50%. So why add graphite powder to glass fiber?From an economic and technological perspective, it is best to choose inorganic abrasive materials, so the amount of graphite powder in the abrasion -resistant material of the glass fiber reinforcement is relatively large. In short, glass fiber wear -resistant materials, because its matrix is a polymer material, fills solid lubricants and vari

2023-07-25

What factors are influenced and gray -testing of scales graphite creep

1. The creep of scales graphite increases with the increase of temperature and stress time. It takes a long time at a lower temperature to observe the obvious creep, but at a higher temperature, the creep can be almost linear increased, that is, the peristalsis at a lower temperature increases only several times, and the temperature rises at a few times at a few times. The intervals when Baidu increased the index.2. The creep of scales graphite is also proportional to the exerted stress. In the same temperature and the same time, the greater the stress applied, the greater the creep.3. The creep of scales graphite is also related to the final heat treatment temperature of graphite. The higher the thermal treatment temperature, the smaller the scales of graphite.For the analysis of micro -quality impurities in scales graphite, the sample is usually pre -grayed or wet to digest carbon removal, dissolved ash with acid, and then determined the impurities in the solution. The measurement m

2023-02-08

Graphite flotation method

Floating is a commonly used and important mineral method. Graphite has good natural floating. Basically, all graphite can be purified by floating methods. In order to protect graphite scales, most of the graphite flotation uses multiple sections of processes. Graphite flotation collecting agents are generally used for kerosene, with a dosage of 100 to 200g/t. The foaming agent is generally used with pine or butad ether, and the amount is 50 to 250g/t.

Mechanical performance of expansion graphite at different temperatures

Expansion graphite has excellent chemical stability, heat resistance, sealing, self -lubricating, radiation resistance and high heat -conducting. It is widely used in industrial fields such as machinery, oil, chemical, metallurgy, aerospace, navigation, transportation, and transportation. It is an ideal advanced sealing material. The mechanical property of expanded graphite may be different at different temperatures.1. Within the temperature range of 400 degrees Celsius, the compressed elastic modulus, rebound rate, and compression rate of expansion graphite sealing materials are not significantly affected by the temperature, and the impact is not greatly affected.2. There are significant differences in the compression modulus, rebound rate, and compression rate of two samples made of different materials formulas and processes, and there are also appropriate differences in the compression strength.3. Within the temperature range from room temperature to 400 degrees, the pressure resis

2023-10-18

What is the purpose of spherical graphite?

Spherical graphite has a wide range of market applications, widely used in industry, agriculture, and mining. It has a wide range of applications and is an important additive material in industrial production. So where are spherical graphite used.1. Spherical graphite as refractory material: The graphite structure and its related products have the properties of high temperature resistance and high strength, and can be mainly used in the metallurgical machinery industry for graphite crucibles and other manufacturing processes.2. Spherical graphite as a conductive material: used for manufacturing electrodes, carbon tubes, positive electrodes for mercury rectifiers, telephone parts, television tubes, etc.3. Spherical graphite as a wear-resistant lubricating material: graphite is commonly used as a lubricant in the mechanical industry. Lubricants typically cannot be used at high speeds, temperatures, and pressures, and wear-resistant materials can be graphite at high sliding speeds.4. The

2023-07-26

The application of scales in the casting industry

1. Scales graphite is the main raw material for the casting industry.During the casting process, the scale graphite should be added to the casting, which helps the product to complete it faster and better, and improve the quality of the casting product. Therefore, the scale graphite for casting is the key raw material for the casting industry.2. How is graphite used to cast?Processing the cast -specific scales graphite into powder, and then add it to the outer surface of the casting and casting to make the casting easy to remove the mold. Casting dedicated scales graphite improves the surface quality of the casting, making the castings more abrasion and high temperature. This is the application of cast -specific scales graphite in casting and its abrasion resistance and high temperature resistance. There are many specifications for casting special sliced graphite powder. In different cast production areas, different thermal scale graphite should be used with different aims of casting.

2023-03-27

The specific use of graphite

2023-04-25

Pure method of high -carbon graphite

The flotation method is a type of energy consumption and reagent consumption and low cost in the conventional purification method of minerals. This is the advantage of the floating method purification method. For scales -shaped graphite, multi -segment mills cannot be completely unbuttoned, but they are not conducive to protecting large scales of graphite. Therefore, the use of flotal methods to further improve the graphite taste. High carbon graphite containing more than 99%of carbon must use chemical methods to use graphite.(1) Pure method of alkaline acid. The carbon content after the purity method of alkaline acid method can reach more than 99%, which has the characteristics of less one -time investment, high product quality, and strong process adaptability. The purity of metal mines can adopt the advantages of alkaline acid method). The alkaline acid method is a wide range of methods in my country today; its disadvantages are large energy consumption, long response time, large gr

2023-07-27

Summary of the characteristics, distribution and purification process of scales graphite

The scale graphite is high -pressure metamorphic. After weathering, it is generally blue -gray, yellow -brown or gray -white. It is mostly produced in tingling rocks, sliced rocks, crystalline litter and silicon hacks. Symbiosis is complicated, mainly consisting of sheet -like crystalline carbon, accompanied by long -stones, Yingshi, Black Cloud Mother, Pymaline Mine, Magnetic Yellow Elephant Mine, Golden Stone and other miscellaneous minerals. The graphite in the ore is a chip -like or blade -shaped, and the black or steel gray is mainly existing between the long stones, the time, the transparency of the pyroxyl, and the permeability of the glitter. It has obvious directional arrangement and consistent with the layer. Scales graphite is mostly natural crystal graphite with a layered structure and looks like fish scales. It belongs to the hexagonal crystal system. The crystalline state is good, the particle size is 0.05 ~ 1.5 microns, the thickness of the thin piece is 0.02 ~ 0.05 mm,