2023-05-17

Mold graphite

The casting industry in the mechanical industry uses graphite materials as molds such as pressure casting, centrifugal casting, and hot squeeze of super hard alloy. It can use graphite molds as large as train wheels and small as small as precision parts. Graphite molds can be repeatedly used for multiple times. After the molding, the casting has a high degree of smoothness, and some can be used without further processing. The graphite material used for casting molds should be graphite with a dense texture, low thermal expansion coefficient, and good antioxidant performance. Graphite, which is used for casting with large casting size, can be composed of thicker particle size. It is used for casting small precision parts The graphite must be graphite with fine particles. The number of graphite used to make molds in China is large. In 2005, it was continuously cast about 1500T with graphite and sintering molds were estimated to cost 4000T. Table 4 is the specifications and technical perf

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

2023-06-25

Battery specific graphite application

With the gradual breakthrough of mass production and large-scale problems, the industrial application of Graphene is accelerating. Based on the existing technological research and development achievements in China, the first batch of commercial applications may be in the fields of mobile electronic devices, aerospace, and new energy batteries.The bendable screen attracted much attention at the Consumer Electronics Show, becoming the development trend of mobile device displays in the future. The future market of Flexible display is huge, and the future of Graphene as a basic material is full of hope.On the other hand, the commercialization of Graphene for new energy battery is an important field. The college can successfully develop flexible photovoltaic panels with Chinese Graphene nano layers on the surface, which can greatly reduce the cost of manufacturing transparent deformable solar cells, and can be used for small system applications in digital technology equipment such as Night

2023-06-13

How to Use Expanded Graphite

1. Protective purposesExpanded graphite can be used as a protective material to protect metals and other easily damaged objects, such as circuit boards and steel. Due to the fact that expanded graphite can expand up to 10 times, it can effectively block flames and prevent these objects from being burned by flames.2. Insulation purposeExpanded graphite can also be used as insulation material because it has good thermal resistance performance and can effectively block heat, so it can be used for insulation, such as electronic products. It can also be used for cooling, preventing heat loss, and thus providing insulation.3. Filtering purposeExpanded graphite can also be used as a filter material because it has adsorption properties and can be used to adsorb toxic substances, such as pollutants in water treatment, effectively removing pollutants from water. It can also be used for air purification to block the entry of harmful substances.4. Reinforcement purposeExpanded graphite can also b

2023-08-17

The position and role of carbon industry in the development of the national economy

Compared with large industries such as machinery, automobiles, electronics and electrical engineering, mining and metallurgy, railways, and transportation, the carbon industry is a small industry, but it occupies an important position and plays an important role in the development of the national economy in China. According to China's first five-year plan, 156 large-scale projects were newly built, of which the carbon industry accounted for two projects. For example, the development of the steel industry cannot be separated from carbon materials and products, especially electric furnaces for smelting alloy steel, which must have graphitized electrodes. Electrolytic aluminum production requires the consumption of 400-450kg of carbon anodes for each ton produced. In addition to ordinary civilian industries, carbon fiber composite materials have a wide range of applications in aviation, aerospace, nuclear energy, military and other fields, such as high specific strength, light weight, an

2023-10-17

How is expanded graphite produced?

Due to the fact that graphite is a non-polar material, it is difficult to intercalate with small polar organic or inorganic acids alone, so oxidants are usually required. The chemical oxidation method generally involves soaking natural flake graphite in a solution of oxidants and intercalators. Under the action of strong oxidants, graphite is oxidized, causing the neutral network of planar macromolecules in the graphite layer to become positively charged planar macromolecules. Due to the extrusion effect of isotropic positive charges between positively charged planar macromolecules, the spacing between graphite layers increases, and the intercalation agent is inserted between the graphite layers to form expanded graphite.Expanded graphite will rapidly shrink when heated at high temperatures, with shrinkage times reaching tens to hundreds or even thousands of times. The apparent volume of contracted graphite reaches 250-300 milliliters/gram or more. The shrunken graphite is in the shap

2024-03-19

The balance of graphite mineral exploitation and environmental protection

Battery dedicated graphite application

With the gradual breakthrough of mass production and large -scale issues, the pace of industrialization of graphene is accelerating. Based on my country's existing technological research and development achievements, the first batch of commercial applications may be mobile electronic equipment, aerospace, and new energy battery fields.The bending screen has attracted much attention at the consumer electronics exhibition and has become the development trend of mobile device display in the future. The future market of flexible display is huge, and the future of graphene as a basic material is also full of hope.On the other hand, an important area for commercialization of new energy battery batteries. The college can successfully develop a flexible photovoltaic board with a surface formation of the Chinese graphene nano -layer, which can greatly increase the cost of reducing production of transparent transparent and deformable solar cells. It can be used for small system applications in

2023-02-22

What are the characteristics of graphite board?

Graphite boards are generally used in industrial production such as metallurgical industry, chemical plants, and photoelectric catalysis. So what characteristics does it be so common to promote it in this field?Six characteristics of graphite board1. Easy process performance of graphite board: graphite board can be cut into different sizes, appearances, and thin thickness. It can give the membrane cutting plane board, which can be thinned from 0.05 to 1.5m.2. The heat resistance of graphite board: The maximum temperature of the graphite board can reach 400 ° C, at least less than -40 ° C.3. High -transmission thermality of graphite board: The thermal conduction rate in the plane map of the graphite board can achieve 1500W/mk, the heat transfer coefficient is 40%lower than that of aluminum, 20%lower than the copper.4. The coordination ability of graphite board: The graphite board is very easy to make a multi -layer board with metal materials, cable shestages or double -sided tape to en

2023-03-27

The specific use of graphite