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),

2023-03-14

What kind of wonderful use of graphite powder?

Graphite powder is widely used. Resources are carbon products, and the melting points are very high. Graphn powder can withstand high temperatures above 3000 ° C. Therefore, graphite powder has excellent high temperature resistance, and graphite powder resistance high temperature resistance can be widely used in high temperature resistance fields. Graphite powder is widely used in high temperature resistance. Casting is carried out in high temperature environments. In order to prevent the casting from deforming and broken at high temperatures, it is necessary to add graphite powder to the casting. Casting graphite powder can withstand the high temperature generated during the forging process, make the surface of the casting clean, without sticky sand, and ensure the quality of the casting.Graphite powder has unique physical chemical properties with high temperature resistance, corrosion resistance, good toughness, good thermal conductivity, good conductivity, and high carbon content.

2023-09-08

Excellent Electrical Conductivity of Carbon Graphite Materials and Their Applications

Graphite can conduct electricity because carbon atoms have two 2P electrons with the same spin direction, which are in the valence band (also known as the π band) when in the ground state. When excited, it transitions to the empty conduction band (π * band) above, leaving an equal number of holes in the valence band. Electrons carry negative charges while holes carry positive charges. When subjected to an electric field, electrons and holes move in opposite directions, thus contributing to electrical conduction. Due to the close arrangement of carbon atoms in graphite crystals and the deep degree of electron co-occurrence on the 2P band of each carbon atom, the valence band is wider and can slightly overlap with the upper conduction band. The gap width between them can be reduced to 0.01eV. Therefore, as long as the electrons in the valence band are slightly excited, they can transition to the conduction band, leading to an increase in conductivity. Therefore, the resistance of carbon

2023-08-14

Which raw materials are selected for the production of graphite electrodes

(1) Raw materials for the production of artificial graphite electrodes. All low ash raw materials such as petroleum coke and asphalt coke can be used to produce high-quality graphite electrodes. Adding asphalt coke is to improve the strength of the product. The production of ordinary power graphite electrodes can use ordinary quality petroleum coke as raw material; Produce high-power graphite electrodes using high-quality petroleum coke and some needle coke; To produce ultra-high power graphite electrodes, high-quality needle coke must be used as the raw material. To produce high-purity graphite electrodes, petroleum coke with very low ash content is required. In order to improve the lubricity and plasticity of the paste and improve the conductivity of the product, a portion of graphite chips is also added to the production ingredient of graphite electrodes.(2) Raw materials for the production of natural graphite electrodes. Using selected natural graphite as raw material and coal tar

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.

What is the purpose of expanding graphite

Adsorption agent of industrial oil.

Graphite products efficacy and advantages

First, graphite products have good adsorption.The gap structure of charcoal makes charcoal good adsorption, so charcoal is often used as adsorption materials for adsorption of water, odor, toxic substances, etc. We have done experiments. The graphite baking sheet used in the barbecue a few days ago looks very clean, but it will be heated on the induction cooker. We will see the fat and harmful substances adsorbed during the last time. Wipe it with a clean dining paper and use it.Second, graphite products have good thermal conductivity, fast heat transfer, uniform heating, and saving fuel.The baking sheet made of graphite, the pot, etc. heated quickly, and the fired food is evenly heated, cooked from the inside, the heating time is not only pure, but it can also lock the original nutrients of the food. We have done experiments. When we use graphite baking pan to barbecue, the induction cooker is hitting the fire at the beginning. It can be preheated in only 20-30 seconds. When you star

2023-11-07

What role does flake graphite play in our lives

Graphite is divided into two types: natural graphite; The second is artificial graphite. Although with the improvement of manufacturing technology, the function of artificial graphite is no less than that of natural graphite in many cases, natural graphite has always maintained its unique advantages in some fields.Among natural graphite resources, flake graphite (crystalline graphite) has low reserves and high value. It has good conductivity, thermal conductivity, lubrication, and oxidation resistance, and is widely used in industries such as metallurgy, machinery, chemical engineering, refractory materials, aerospace, etc. It is one of the indispensable non-metallic materials for the development of high-tech today.Natural flake graphite peelingThe flake graphite structure is flaky and has good surface properties, making it one of the best floatable minerals in nature. According to the size of the scales, flake graphite can be divided into large flake graphite (with particle sizes of

2023-03-28

Preparation of ultra -fine graphite powder

Graphite powder is soft, black and gray; it is greasy and can pollute paper. The chemical properties of graphite powder are relatively stable at normal temperature, insoluble in water, dilute acid, dilute alkali and organic solvents; the material has high temperature resistance resistance, which can be used for refractory materials, conductive materials, and wear -resistan

2023-10-26

Graphite electrode materials have the following six advantages

1、 Fast speed;Graphite discharge is 2-3 times faster than copper, and the material is not easily deformed. It has obvious advantages in the processing of thin ribbed electrodes. Copper has a softening point of around 1000 degrees, which is prone to deformation due to heating. The sublimation temperature of graphite is around 3650 degrees, and compared to copper, the thermal expansion coefficient of graphite material is only 1/30 of that of copper material;2、 Lightweight;The density of graphite is only 1/5 of that of copper. When using large electrodes for discharge machining, it can effectively reduce the burden on machine tools (EDM) and is more suitable for the application of large molds;3、 Low loss;Due to the presence of C atoms in spark oil, during discharge machining, high temperatures cause the C atoms in spark oil to decompose, forming a protective film on the surface of the graphite electrode, compensating for the loss of the graphite electrode;4、 No burrs;After the copper ele