2023-08-28

The purpose of graphite machining

Various carbon graphite products, although they have a certain shape and size after forming, undergo expansion and contraction, deformation and bending, collision or corner dropping during the process of roasting, impregnation, and graphitization treatment from the pressed blank to the graphitized blank. The surface adheres to some fillers and insulation materials, resulting in roughness and unevenness. Their shape and size change to a certain extent, and they cannot achieve the shape of the product during use, Due to strict requirements for size and surface roughness, it cannot be used without mechanical processing. In addition, some products have complex structures and shapes that cannot be directly produced by forming methods, such as metal continuous casting and rolling graphite crystallizers, electric spark machining graphite molds, carbide sintering graphite boats, discs, and other special graphite products. Some products require interconnection when used, such as the connection

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

2023-06-07

Graphite special nature

Due to its special structure, graphite has the following special nature:1. High temperature resistance: The melting point of graphite is 3850 ± 50 ° C, and the boiling point is 4250 ° C. Even if it is burned by ultra -high temperature arc, the loss of weight is small and the thermal expansion coefficient is small. Graphite strength is strengthened with the temperature, and at 2000 ° C, the graphite strength doubles.2. Conductive and thermal conductivity: The conductivity of graphite is 100 times higher than that of ordinary non -metal ore. Thermal conductivity exceeds metal materials such as steel, iron, and lead. The thermal conductivity decreases with the temperature increase, and even at a very high temperature, the graphite becomes the heating body. Graphite can conduct electricity because each carbon atom and other carbon atoms in the graphite only form three co -price bonds, and each carbon atom still retains a free electron to transmit charge.3. Lubrication: The lubrication per

2023-04-21

What should be paid attention to when processing refractory materials with flake graphite?

What are the scope of application of graphite anode?

High -purity graphite board is made of high -quality high -purity graphite. High -purity graphite refers to the carbon content of graphite more than 99.99%. High -purity graphite producers use oil coke as raw materials. Production, after the production of rigorous high -purity graphite processing process. High -purity graphite has excellent characteristics such as good conductivity, heat resistance, acid suppression, alkali etching, and easy production and processing. High -purity graphite products are generally used to refractor and thermal insulation materials and building coatings in the metallurgical industry. , Pencil core in the light industry, motor carbon brush produced by the electrical equipment industry, electrical grade of electricity production produced by the rechargeable battery industry, and the production of metal catalysts in the organic fertilizer industry.The anode oxygen graphite board is also called graphite positive film, graphite positive rod, which has high -q

2023-04-13

High pure graphite characteristics and application

High pure graphic refers to the carbon content of graphite greater than 99.99 %, and high pure graphite has the advantages of high strength, high density, high purity, good shock resistance, high temperature resistance, anti -oxidation, small resistance coefficient, corrosion resistance, and precision processing. It is an ideal inorganic non -metal material. It is used to process and make electric heating elements, electro -spark processing graphite, sintering molds, electronic tube anode, etc., which are widely used in the metallurgical industry's high -grade refractory materials and coatings Light industry's pencil core, carbon brush of electrical industry, electrode of the battery industry, and catalyst additives of the fertilizer industry, etc., high pure graphite can be produced, and can also produce graphite, graphite sealing materials and composite materials, graphite products, graphite reduction reduction reduction High -tech products such as additives have become an important

2023-08-17

Impregnation object and type of impregnating agent

In carbon products, there are several types of products that need to be impregnated:(1) Products with higher density, mechanical strength, and lower resistivity are required. Such as ultra-high power electrodes, various joint blanks, graphite anodes, mechanical carbon products, etc.(2) Impermeable graphite required for chemical equipment. For example, heat exchangers, pumps, chemical pipelines and fittings, sealing rings and sealing rings used on chemical equipment, etc.(3) Products used for producing wear-resistant materials. For example, piston rings, bearings, directional rings, sliding electrical contacts, etc.(4) Products with special requirements. Such as high-density and high-strength graphite.The commonly used impregnating agents include asphalt, synthetic resins, metals, lubricants, inorganic compounds, etc., which can be selected according to the different performance requirements of the impregnating object. When selecting impregnating agents, it is necessary to pay attentio

2023-08-07

Impermeable graphite material

Impermeable graphite is an ideal material with good corrosion resistance and thermal conductivity in chemical production. It can be used to make heat exchangers, reaction tanks, absorption towers, gas combustion towers, hydrochloric acid synthesis furnaces, graphite centrifugal pumps, jet pumps, and various pipelines and joints. Impermeable graphite is divided into three categories:1. Impregnated impermeable graphite products - This is made by impregnating the graphite matrix. Impregnating agents not only reduce the porosity of graphite, but also increase the compressive strength and tensile strength of graphite materials by 1-2.5 times and 4-5 times respectively; Increase bending strength by 2-3 times; Increase the impact strength by 2-2.5 times. Commonly used impregnating agents include phenolic resin, furfural ketone resin, furfural alcohol resin, organic silicon resin, water glass, paraffin, divinylbenzene, asphalt, etc.2. Pressed impermeable graphite product - is a material made

2024-03-06

Graphite: Uncovering the unique properties and wide applications of this amazing material

Graphite, a seemingly unremarkable mineral, hides a multitude of amazing properties and applications. It is not only an ancient material for writing and painting, but also a key element of modern industry and technology.The unique properties of graphite stem from its layered structure. Each layer of graphite is tightly bound by carbon atoms through covalent bonds, while the layers interact with each other th

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