2023-06-20

What are the characteristics of high-purity flake graphite

High purity flake graphite has good high-temperature resistance, conductivity, thermal conductivity, lubricity, and chemical stability. Graphite powder manufacturers are widely used in fields such as metallurgy, machinery, environmental protection, chemical industry, fire protection, electronics, medicine, military industry, aerospace, etc. It plays an increasingly important role in the national economy and is an indispensable non-metallic raw material for modern industrial and high-tech development. Trace impurities have a significant impact on the performance of graphite products. The higher the carbon content of high-purity flake graphite, the better its performance as a functional material.In order to analyze trace impurities in high-purity flake graphite, the sample is usually ashed or wet digested to remove carbon, the ash is dissolved in acid, and the impurity content in the solution is then determined. The ashing method does not require the use of ultrapure acids to dissolve a

2023-05-25

Graphite pad type

Flexible graphite pads are cut from flexible graphite thin slices (or metal enhanced). They are divided into four types according to the needs of the application:1. Flexible graphite pads: cut from flexible graphite thin slices for pipeline flange and valve cover. It is recommended that this kind of pads are small diameter pads, depending on its low mechanical strength.2. Flexible graphite pad MI: The carbon steel sheet with hooks (0.2 mm thick) is sandwiched in the middle by flexible graphite thin slices, and then cut into a specific size. The mechanical strength is high.3. Flexible graphite pad PM: Flexible graphite thin slices are attached to the two sides of the 0.2 mm thick 304 stainless steel sheet. It has a high mechanical strength and is easy to transport. Because it can also be cut into a complex shape, this kind of pad film can be cut. Widely applied to various industries.4. Flexible graphite pad PM-A: Replace the stainless steel slices in T/#1215 to 316 steel (50 microns),

2023-04-14

Can expand graphite development

Graphite crystals have a hexagonal layer -shaped structure composed of carbon elements. The carbon atoms on the layer of flat plane are combined with powerful covalent bonds. Therefore, under appropriate conditions, a variety of chemicals such as acid, alkaline metals, and salt can be inserted into the graphite layer, and a new chemical phase -Graphite Intercities on compounds (referred to GIC). When this intervertebral compound is heated to an appropriate temperature, it can quickly decompose instantly, generating a large amount of gas, so that the graphite is expanded into a new substance of worm -shaped, that is, the expansion of the intervertebral compound of the expansion. graphite.The expansion graphite was first discovered by the German SChaufautl. In 1841, Schaufautl soaked natural graphite in a mixture of thick HNO3 and thick H2SO4. In 1963, he first applied for expanding graphite manufacturing technology patents and industrialized production in 1968.The above is some of the

2023-12-15

Antioxidant treatment methods for graphite materials

As is well known, during the manufacturing process of graphite products, the thermal decomposition and condensation of organic carbon based raw materials form porous artificial graphite materials, with a general porosity of around 20% to 30%. Most of them are open pores, which increases the diffusion speed and depth of oxidizing gases, and deteriorates their antioxidant pr

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,

2023-10-11

High temperature resistant vacuum furnace graphite rod

1. Graphite rods have high density, good sealing performance, low air tightness, long service life, strong oxidation resistance, and low maintenance rate2. In terms of the application of vacuum furnace heating graphite rods, we can provide temperature design requirements for heating graphite rods, and we can provide free technical consultation and after-sales service to customers3. High purity graphite rods, graphite rods for bearings, graphite blocks, and graphite rods are used in precision instruments, aerospace industry, military industry, chemical industry, and metallurgical industry.4. These products can be used to make graphite heaters (heating graphite rods), graphite instruments, graphite bearings, graphite crucibles, graphite heating elements and tubes for vacuum furnaces, graphite furnace nails, graphite racks, graphite tools, templates, etc5. Modifiable performance: high temperature and chemical resistance, good thermal conductivity, low coefficient of thermal expansion, an

2023-09-04

How are graphite electrodes consumed in electric furnace steelmaking?

The consumption of graphite electrodes is mainly related to the quality of the electrodes themselves, as well as to steelmaking operations and processes.(1) Electrode end consumption. Its consumption includes the sublimation of graphite material caused by high arc temperature, as well as the loss of chemical reactions between the electrode end and molten steel and slag. The electrode end consumption is also related to whether the electrode is inserted into the molten steel to increase.(2) Oxidation loss on the outer surface of the electrode. In recent years, in order to improve the smelting rate of electric furnaces, oxygen blowing has been widely used, which has led to an increase in electrode oxidation losses. In general, the oxidation loss on the outer circular surface of the electrode accounts for about 50% of the total electrode consumption.(3) Residual loss of electrodes or connectors. A small section of electrode or connector that is continuously used at the connection between

2023-04-03

The shortcomings and prevention of graphite mold heat treatment process

Graphite board antioxidant solution increases the period of use

After the formation of graphite board, it must be solved by antioxidantization. Generally, antioxidants are used, which is a thick liquid state. The ingredients are heat -resistant nano -ceramic particles. In the natural environment of air oxidation within 1300 ° C in the application temperature of the graphite board, its antioxidant actual effect is very good. After a variety of specifications of graphite boards with pre -immersed in the antioxidant protective film, its liquid can penetrate into the pores of the graphite board. The sexual protective membrane is exactly the reasonable blocking gas of this layer of protective membrane immediately touched with the graphite plate to produce oxidation reactions. Then it can reasonably resist the air oxidation of the graphite board and increase the use period of graphite board.The period of use of graphite boards has continued to increase, and the service life of traditional raw materials has already increased significantly. It is confirme

2023-12-05

Explain in detail the uses of flake graphite?

Scale graphite is also very common in our daily lives. Because its advantages are quite prominent, there are also many people who choose to use it. Today, I also take this opportunity to introduce to you the uses of flake graphite? If you want to know, come and take a look quickly.Flake graphite is a natural graphite ore with a shape similar to fish scales, and is a hexagonal crystal with a layered structure. Now this product has good acid and alkali resistance, high temperature resistance, conductivity, thermal conductivity, and lubrication performance. Refractory materials and coatings widely used in the smelting industry. Stabilizers for military fireworks such as magnesia carbon bricks and crucibles, desulfurization promoters for the smelting industry, pencil leads, carbon brushes for the electrical industry, electrodes in batteries, catalysts for the chemical industry, etc. Lubricants, release agents, drawing agents, conductive coatings, etc. Flake graphite has a lubricating effe