Electro Graphite Block
Electro graphite has a high purity and very good frictional properties to protect both the commutators and slip rings that is running on . In widest range of applications . Depending on the composition ratios and the production process .Following are properties
Products specifications welcome your inquiry with your request industry and grades.
Good Electrical Conductivity
Relatively high Specific Resistance to suit many commutation Conditions
High Peripheral Speeds
Reasaonably low Co-efficient of Friction
Due to the extreme conditions that traction Motors have on Carbon Brushes ,Electrographite Xingshi-Graphite produce all Grades with high Compression and Flexural strengths to be able to withstand those Mechanical and Electrical stresses .
We provide widely grades of graphite blocks :
Other Graphite block Characters :
Graphite block has the characteristics of high bulk density, low resistivity, oxidation resistance, corrosion resistance, high temperature resistance and good conductivity.
1. The graphite with the content of high-purity graphite more than 99.9% is called high-purity graphite. It has the advantages of excellent conductivity, heat conduction, pressure and corrosion resistance, small expansion coefficient, good self-lubricating and processing performance.
2. Good chemical resistance; can be used in all kinds of chemical reaction crucibles, test tubes, etc.
3. High thermal conductivity and thermal stability; various high temperature resistant products such as molten gold and silver
4. Sufficient mechanical strength and impact resistance;
5. It is easy to machine, and can be processed into various geometric products as required.
6. Graphite has the following special properties due to its special structure:
1) High temperature resistant type: the melting point of graphite is 3850 ± 50 ºC, and the boiling point is 4250 ºC. Even if it is burned by ultra-high temperature arc, the weight loss is very small, and the coefficient of thermal expansion is very small. The strength of graphite increases with the increase of temperature. At 2000 ºC, the strength of graphite doubles.
2) Conductivity and thermal conductivity: the conductivity of graphite is 100 times higher than that of non-metallic ores. The thermal conductivity is higher than that of steel, iron, lead and other metal materials. The thermal conductivity decreases with the increase of temperature, and even at extremely high temperature, graphite becomes an insulator.
3) Lubricity: the smaller the friction coefficient, the better the lubricity.
4) Chemical stability: graphite has good chemical stability at room temperature, can resist the corrosion of acid, alkali and organic solvent.
5) Thermal shock resistance: graphite can withstand the drastic change of temperature without damage when it is used at normal temperature. When the temperature changes abruptly, the volume of graphite changes little and cracks will not occur.
Application Area:
Graphite block / rod is used for lining and conducting materials of silicon carbide furnace, graphitization furnace and other metallurgical furnace, resistance furnace, and impermeable graphite heat exchanger. Widely used in electronics, metallurgy, chemical industry, steel and other fields, the products have excellent quality and stable performance.
Graphite with more than 99.9% graphite content is called high-purity graphite. It is an ideal crucible boat dish for inorganic nonmetal, heater for single crystal furnace, graphite for EDM, sintering mold, anode for electronic tube and metal coating,
Graphite crucible for semiconductor technology, emission electron tube, thyratron and graphite anode and grid for mercury arc rectifier.
Graphite electrode carbon rod is used for welding silver spot welding machine, carbon rod machine, butt welding machine, butt welding machine, silver spot and copper parts of electrical appliances and other hardware parts. It is the best and ideal tool material.
1. As refractories, graphite and its products have the properties of high temperature resistance and high strength. They are mainly used to make graphite crucibles in metallurgical industry. In steel making, graphite is often used as the protector of ingots and the lining of metallurgical furnace.
2. As conductive material, it is used in the electrical industry as the positive pole of electrode, brush, carbon rod, carbon tube, mercury positive current device, graphite washer, telephone parts, TV picture tube coating, etc.
3. As wear-resistant lubricating material, graphite is often used as lubricant in mechanical industry. Lubricating oil can't be used under the condition of high speed, high temperature and high pressure, while graphite wear-resistant material can work without lubricating oil at a very high sliding speed in the temperature of 200 ~ 2000 ºC. Many equipment for transporting corrosive media are widely made of graphite materials, such as piston cup, seal ring and bearing. They do not need to be added with lubricating oil when they are running. Graphite emulsion is also a good lubricant for many metal processing (wire drawing, tube drawing).
4. Graphite has good chemical stability. After special processing, graphite has the characteristics of corrosion resistance, good thermal conductivity and low permeability, so it is widely used to make heat exchanger, reaction tank, condenser, combustion tower, absorption tower, cooler, heater, filter and pump equipment. Widely used in petrochemical, hydrometallurgy, acid and alkali production, synthetic fiber, paper and other industrial sectors, can save a lot of metal materials.
5. For casting, sanding, die-casting and high-temperature metallurgy materials: due to the small thermal expansion coefficient of graphite and its ability to withstand the changes of rapid cooling and heat, it can be used as a mold for glassware. After using graphite, ferrous metal can obtain accurate casting size, high surface finish yield, and can be used without processing or a little processing, thus saving a lot of metals. In the production of cemented carbide and other powder metallurgy processes, graphite materials are usually used to make ceramic boats for pressing and sintering. The crystal growth crucible of monocrystalline silicon, regional refining vessel, bracket fixture, induction heater, etc. are all made of high-purity graphite. In addition, graphite can also be used as heat insulation plate and base of vacuum smelting, high temperature resistance furnace tube, rod, plate, grid and other components.
6. It is used for heat insulation and radiation protection materials. After special processing, graphite can be used to make all kinds of special materials for relevant industrial departments.
7. Electrode: Graphite instead of copper as electrode
Graphite block is used for lining and conducting materials of silicon carbide furnace, graphitization furnace and other metallurgical furnace, resistance furnace, and impermeable graphite heat exchanger. Widely used in electronics, metallurgy, chemical industry, steel and other fields, the products have excellent quality and stable performance.
8. Graphite rod is commonly used in the electric heater of high temperature vacuum furnace. The maximum operating temperature can reach 3000 ºC, and it is easy to oxidize at high temperature. Except for vacuum, it can only be used in neutral atmosphere or reductive atmosphere. Its thermal expansion coefficient is small, its thermal conductivity is large, its resistance coefficient is (8 ~ 13) × 10-6 Ω· m, its processability is better than that of SiC and MoSi2, its high temperature resistance, extreme cold and heat resistance are good, and its price is cheaper.
9. Graphite crucible boat, dish and single crystal furnace for processing and manufacturing electric heating element, precious metal casting mold, smelting metal, etc.; graphite mold for heater, spark graphite, sintering mold, electronic tube anode resistance, metal coating, semiconductor technology; graphite products such as graphite electrode for launching electronic tube, thyratron and mercury arc distiller It is mainly used in various vacuum resistance furnaces, induction furnaces, sintering furnaces, brazing furnaces, ion nitriding furnaces, tantalum niobium smelting furnaces, vacuum quenching furnaces and other special graphite plates, graphite boat dishes, graphite tube heaters, conductive rods, graphite hearth plates, graphite bolts, nuts, graphite brackets, graphite molds
10. The high-purity graphite rod has the characteristics of high density, good strength, high wear resistance and good wear resistance. It is generally used for the materials of high-end graphite products, such as graphite ring, graphite bearing, wear-resistant graphite, graphite melting crucible, the surface can be polished, high-temperature graphite, strong acid and alkali resistance, and can be used to make chemical reactors and other products
11. Graphite block is used for lining and conducting materials of silicon carbide furnace, graphitization furnace and other metallurgical furnace and resistance furnace, as well as impermeable graphite heat exchanger. Widely used in electronics, metallurgy, chemical industry, steel and other fields, the products have excellent quality and stable performance. Graphite block is used as conducting electrode in the industry of electrolytic metal magnesium and electrolytic metal nickel. Graphite block is also widely used to make corrosion-resistant heat exchange equipment in chemical industry and furnace building materials for high temperature furnaces.
FAQ:
1.When can I get the price?
We usually quote within 24 hours after getting your detailed requirements,like size,quantity etc. .
If it is an urgent order, you can call us directly.
2.Price?
Before inquiry us the price, pls be kindly send us the detail data of the material you need.
We will give you our best price.
3. Do you provide samples?
Yes, samples are available for you to check our quality.
4.What is your terms of delivery?
We accept FOB, CFR, CIF, EXW, etc. You can choose the most convenient way for you. Besides that, we can also send the product to you by Air and Express.
5.Product packaging?
The product will be packed in wooden cases/pallets with steel strips, or according to your requirements.
6.Notice
Please note that the price on alibaba is a rough price.The actual price will depends on raw materials,exchange rate, and your order quantity .
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