2023-06-27

Let's take a look at the uses of battery specific graphite in industrial applications

The special graphite for batteries has good chemical stability, and the specially treated graphite has the characteristics of corrosion resistance, good thermal conductivity, and low permeability, so it is widely used to make heat exchangers, reaction tanks, condensers, combustion towers, absorption towers, coolers, heaters, filters, and pumps, and is widely used in petrochemical, hydrometallurgy, acid-base production, Synthetic fiber, paper making and other industrial sectors, Can save a large amount of metal materials.It is a material for casting, casting, pressing and high-temperature metallurgy. Because of its low coefficient of thermal expansion of graphite and its resistance to rapid cooling and heating, it can be used as a mold for glassware. After graphite is used, Ferrous can be used to obtain castings with accurate size, smooth surface and high yield, which can be used without machining or slightly processing, saving a lot of metal. In the powder metallurgy process of produc

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

2023-07-31

The results of graphene composite materials in the field of aluminum alloy corrosion protection

Graphene is a flat film composed of carbon atoms. It has only one carbon atom and is almost completely transparent. The graphene composite material has the characteristics of high strength, good toughness, excellent conducting thermal and thermal performance. Environmental purification and other fields have broad application prospects.Due to its large reserves, high strength, and good processability, aluminum alloy has been widely used in modern industries, military aerospace and civilian fields. loss. Therefore, it is important to do the anti -corrosion work of aluminum alloy materials.In this project, the composite of gallery oxide participating in self -made water -soluble nano -coating materials and rare earth passivation has a significant promotion effect on aluminum alloy anticorrosion. Among them, graphene alleviates environmental pollution caused by organic emissions, improves the coatings itself. Anti -environmental aging ability, rare earth replace toxic hexavalent chromium,

2023-04-20

Electronic effect of graphene

The Legend of Graphite

Graphite, this black mineral, carries the legend of thousands of years. Since ancient times, graphite has been a symbol of people's wisdom. Whether in writing or painting, graphite has written a chapter of history with its unique charm. Its texture is delicate, and its color is profound. Each piece of graphite seems like a masterpiece of nature, quietly telling the story of the vicissitudes of time.In the wave of technology, graphite has demonstrated its extraordinary value. As an important industrial raw material, it plays a crucial role in fields such as metallurgy and chemical industry. Meanwhile, graphite is also a darling in the field of new energy, and its excellent conductivity and stability make it shine in fields such as batteries and electrodes. Graphite, with its toughness and durability, witnesses the progress of human civilization.However, the charm of graphite goes far beyond that. Under the influence of culture, graphite has become a carrier of art. Sculptors use graphi

2023-08-29

The main impregnating agents currently used for graphite

(1) Carbon based materials: Most carbon based materials use asphalt, but in order to control the filling rate, tar or asphalt is often mixed with low carbonization rate and low viscosity carbon based materials such as tar and creosote. They are carbonized through heat treatment after impregnation, so the residual material entering the pores is only carbon. The carbon process is currently a standard carbon process aimed at improving density, strength, conductivity, thermal conductivity, corrosion resistance, and wear resistance. It has become the most common treatment method for general carbon materials, especially in the production process of fine structured graphite and UHP electrodes for electric furnace steelmaking. It is an indispensable process. In order to achieve the same goal, there are also cases of impregnating synthetic resin and then roasting and carbonization. The carbonization of synthetic resin generally generates hard carbon, which is characterized by greatly increasin

2023-03-14

Do you know what is the difference between graphite powder and coal powder?

The chemical elements of the two are the same, but the structure is completely different. The coal is a molecular crystal, and the graphite is a atomic crystal. Usually we usually say that C powder is molecular crystals.Graphite: Natural crystal graphite, shaped like fish phosphorus, is a hexagonal crystal system, with layer -like structure, high temperature resistance, conductivity, heat conduction, lubrication, plasticity, acid and alkaline resistance. The scale graphite is divided into four categories according to the fixed carbon content: high pure graphite, high carbon graphite, medium carbon graphite, low -carbon graphite.Graphite powder is soft, gray -black; raw materials have heat -resistant conductivity, which can be used as refractory insulation materials, conductive raw materials and wear -resistant moisturizing raw materials. Graphite's unique process is processed into milk products. It is smooth and exquisite in viewing. It must use containers such as barrels and other co

2023-08-29

Types of products impregnated with graphite

(1) Small specification graphite electrodes and joint blanks, various specifications of graphite anodes, fine structure, high-strength, and high-density graphite. These products need to have high density and strength, as well as low electrical resistivity, so the baked semi-finished products are first impregnated with coal tar pitch and then graphitized.(2) Diaphragm type salt solution electrolysis cell graphite anode. Graphite anodes impregnated with coal tar pitch can generally last for 8-9 months, while graphite anodes that are not impregnated can only last for 5-6 months. The main reason for affecting the lifespan of graphite anodes is that the electrolyte penetrates into the pores of the anode, while hydroxide ions, sulfate ions, and hypochlorite ions in the electrolyte discharge on the anode, generating primary oxygen. This initial oxidation reaction of oxygen on the anode causes chemical corrosion, which accounts for about half of the loss. Additionally, chemical corrosion weak

2023-11-08

Graphite purification method

Graphite is a high-energy crystalline carbon material, which has high application value in high-performance materials due to its unique structure and characteristics such as conductivity, thermal conductivity, lubrication, high temperature resistance, and chemical stability. It is widely used in fields such as metallurgy, machinery, environmental protection, chemical engineering, fire resistance, electronics, medicine, military industry, and aerospace, and has become an essential non-metallic material for modern industry and the development of high, new, and cutting-edge technologies, The position in the development of the national economy is becoming increasingly important, and international industry experts predict that the 20th century will be the century of silicon, and the 21st century will be the century of carbon.Natural graphite in China has good geological conditions, wide distribution, abundant resources, and good quality, with reserves and production ranking first in the wo

2023-03-22

What are the causes of quenching cracks in high -strength graphite molds?

1. When the graphite mold is repaired and quenched, heating and quenching without annealing in the middle; 2. Excessive heating temperature for quenching is overheated or burned; 3. There are mechanical processing or cold plastic deformation stress in graphite mold; 4. There are severe mesh carbides in the material; 5. After quenching, the fire is not timely or the insulation time is insufficient; 6. Improper heat treatment operation of graphite mold. If heated or cooling is too fast, improper selection of quenching and cooling medium, low cooling temperature, too long cooling time, etc.; 7. When the graphite mold heats is processed by electric sparks, there are high stress stress and micro -cracks in the hardening layer; 8. The graphite mold is heat -treated and the grinding process is improper. 9. The shape of graphite mold is complex, unevenly thick, with sharp corners and thread holes, which make the heat stress and tissue stress too