2023-10-27

Maintenance and upkeep of graphite crucibles

The graphite crucible must be strictly protected from moisture and must be stored in a dry place or on a wooden frame. When handling graphite crucibles, it is important to handle them with care and prevent them from falling or shaking. Before using them, they should be baked in a drying equipment or by the furnace to raise the temperature to 500 ℃. The graphite crucible should be placed below the surface of the furnace mouth to prevent wear and tear on the furnace cover. When adding materials, it should be based on the solubility of the crucible, and too much material should not be added to prevent tightening the crucible. The furnace outlet and crucible clamp should conform to the shape of the crucible, and the clamp in the middle should prevent damage to the crucible due to stress on the department. When removing slag and coke from the inner and outer walls of the crucible, it should be gently knocked to prevent damage to the crucible. A suitable distance should be maintained betwee

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

2023-04-18

What are the characteristics of high pure graphite accessories molding graphite?

Graphite is a kind of homogenous alien body for carbon. It is gray -black, opaque and solid. The density is 2.25 grams per cubic centimeter, the melting point is 3652 ° C, and the boiling point is 4827 ° C. The chemical properties are stable, corrosion -resistant, and it is not easy to react with drugs such as acid and alkali. Burning carbon dioxide in oxygen at 687 ° C. Oxidation can be oxidized by strong oxidatives such as concentrated nitrate and potassium hydanol. It can be used as an anti -wear agent and lubricant. High purity graphite is used as a neutron decelerator in the atomic reactor. It can also be used to manufacture crickets, electrodes, brushes, dry batteries, graphite fibers, heat exchangers, coolers, electric arc furnaces, and arc furnaces, and electric arc furnaces, electric arc furnaces, and arc furnaces, and electric arc furnaces. Arc lights, pencils of pencils, etc.Due to its special structure, graphite has the following special nature:(1) High temperature resista

2022-11-23

What you need to know in the daily use of graphite mold

Due to the special structure of the graphite mold. Therefore, in daily use, these special properties should also be understood by us.1. High temperature resistant type: the melting point of graphite is 3850+50°C, and the boiling point is 4250°C. Even in ultra-high temperature arc burning, the thermal expansion coefficient is very small, and the strength of graphite increases with the increase of temperature. At 2000°C , graphite strength increased - times;2. Lubricity: The lubricating performance of graphite depends on the size of the graphite flakes. The larger the flakes, the smaller the friction coefficient and the better the lubricating performance;3. Plasticity: Graphite has good toughness and can be made into very thin sheets;4. Chemical stability: Graphite has good chemical stability at room temperature, and is resistant to acid, alkali and organic solvents;5. Thermal shock resistance: When graphite is used at room temperature, it can withstand drastic changes in temperature wi

2023-05-17

Special graphite for electric spark processing

Electric spark processing is a new type of processing process in the mechanical manufacturing industry. Electric spark processing can process many metals with large hardness and can be processed. Copper materials can also use graphite materials. Graphite materials used for electrical electrodes used for electrical sparks must have the following conditions:(1) The structure is dense and uniform in tissue, and there should be no coarse particles and large pores;(2) There is a high mechanical strength and good processing performance. It can process complex shapes or sharp corners and thin slices;(3) Graphite tool electrodes, there are certain losses during the processing of electricity, this loss should be as low as possible;(4) The discharge characteristics are stable and the processing speed is fast. Therefore, graphite machining is generally used with graphite structure graphite or exquisite particle structure graphite. It is best to have the same sex in physical properties. Therefore

2023-10-08

Graphite anode usage

In an electrolytic cell, the current flowing into the electrolyte from this point is called a graphite anode plate. In the electrolysis industry, the anode is generally made into a plate shape, so it is called a graphite anode plate. It is widely used in ferries, wastewater treatment, industrial anti-corrosion equipment, or as a special material.Compared with other materials, graphite anode plates have advantages such as high temperature resistance, good conductivity and thermal conductivity, easy mechanical processing, good chemical stability, acid and alkali corrosion resistance, and low ash content; Used for electrolyzing aqueous solutions, producing chlorine, caustic soda, and electrolyzing salt solutions to produce alkali; For example, graphite anode plates can be used as conductive anodes for electrolysis of salt solution to produce caustic soda. Graphite anode plates can be used as conductive anodes in the electroplating industry, making them an ideal material for various elect

2023-03-06

What are the key features of graphite blocks?

1. Heat transfer and conductivity: Graphite has excellent heat transfer and conductivity. It is compared with general raw materials, and its heat transfer conductivity is moderate. It is 100 times higher than ordinary non -metal materials.2. Organic chemistry reliability: The gas -graphite has excellent organic chemical reliability, which can resist acidity, alkaline resistance, and organic solution.3. heat resistance: graphite block is one of the most heat -resistant raw materials that are already known to today. Its dissolution point is 3850 ℃ ± 50 ℃, and the melting point is 4250 ℃. Discard the least, and discard 0.8%according to weight graphite. It is not difficult to see that the heat -resistant function of graphite is excellent.4. Wetness: The moisturizing function of the graphite is similar to sulfide, and the friction resistance is lower than 0.1. Its moisturizing function changes with the size of the fish scales. The larger the fish scales, the smaller the friction resistance

2023-10-19

The Price of Spherical Graphite and Its Use

The price of spherical graphite is related to the use of graphite, which is widely used in many industrial fields.1. The price of spherical graphite is related to the use of graphite for refractory purposes, including bricks, crucible disasters, continuous casting powder, mold cores, molds, and refractory material detergents. Two important changes in the refractory industry are the widespread use of magnesium carbon bricks for steelmaking furnace lining and the application of aluminum carbon bricks in continuous casting. Graphite refractory materials, steel and other industries are closely related, and magnesium's MgO-C in the world has been widely used for steelmaking and has become a traditional use of graphite. Aluminum carbon bricks are mainly used for continuous casting of carbon refractory materials, and for flat protection of slabs such as pipelines and underwater nozzles. Molded refractory crucibles and related products produced from graphite crucibles and related products, su

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

2023-12-19

Rolling method of graphite plate