Electric arc furnace steelmaking is based on electrodes to generate arcs, so that electric energy can be changed into heat energy in the arc, melting furnace burden and removing impurities such as sulfur and phosphorus, adding necessary elements (such as carbon, nickel, manganese, etc.) to smelt steel or alloy with various properties. Electric energy heating can accurately control the temperature of the furnace and produce low temperature waste gas. The heat efficiency of the arc steelmaking furnace is higher than that of the converter.

　　Technology development has a history of about 100 years in EAF steelmaking, although other methods always face the steelmaking challenges and competition, especially the high efficiency oxygen steelmaking impact, but the proportion of steel production of EAF steelmaking in the world steel output is still rising year by year. In the early 1990s, steel produced by EAF in the world accounted for 1 / 3 of the total steel output. In some countries, EAF was the main steelmaking technology in some countries, and the proportion of steel produced by EAF smelting was 70% higher than that in Italy.

　　In 1980s, widespread in the EAF steel production in continuous casting, and gradually formed a "energy-saving production process of a scrap preheating electric arc furnace smelting a refining continuous casting a continuous rolling, arc furnace is mainly used for rapid equipment scrap as raw material of steel-making. In order to fundamentally overcome the ultra high power AC arc furnace arc instability, three-phase power supply and current unbalance and severe impact on the power grid and the research of DC arc furnace, and put into industrial application on first Century 8O in the mid-1990s, DC arc furnace using only 1 root of the graphite electrode has been widely used in the world in 90s (2 with some graphite electrode DC arc furnace).

　　Greatly reduce the consumption of graphite electrodes is the greatest advantage of the DC arc furnace, before the end of 1970s, AC arc furnace per ton of steel consumption of graphite electrode in 5 ~ 8kg, graphite electrode costs accounted for 10% of the total cost of steel to 15%, although taken a number of measures, so that the graphite electrode consumption decreased to 4 6kg, or production costs accounted for 7% 10%, the use of high power and ultra high power steelmaking method, electrode yak is reduced to 2 ~ 3k.g / T steel, DC arc furnace which uses only 1 graphite electrode, graphite electrode consumption can be decreased to 1.5k.g / T steel under.

　　Both theory and practice show that the single consumption of graphite electrode can be reduced by 40% to 60% compared with the AC arc furnace.

　　The graphite electrode paste is a conductive material that is used to supply iron alloy furnace, calcium carbide furnace and other electric furnace equipment.

　　The electric current is produced by the electric arc in the furnace. The electrode is very important in the whole electric furnace. Without it, the electric furnace can not be produced. To make the electrode in the arc temperature under normal working, must have high resistance to oxidation and conductivity, which only made of carbon material electrode, this nature, because the carbon electrode can withstand up to 35 DEG C arc temperature only slow oxidation.

　　Raw materials to be updated"

　　Now used in the production of electrode paste material basically is general calcined anthracite coal, metallurgical coke powder, medium temperature coal tar pitch; should be updated to use electric calcined anthracite, calcined petroleum coke, change coal asphaltenes. Pu calcined anthracite specific resistance is higher than that of electrically calcined anthracite 70%; metallurgical coke powder was calcined petroleum coke 2.5 times better than that of the resistance, modified bituminous coal of toluene insoluble, coking value is higher than that of the medium temperature coal tar pitch. After the replacement of raw materials, the quality of the electrode paste on a step.

　　Although raw materials of upgrading to increase the cost of electrode paste, electrode paste the price increase, but must be able to use to reduce the production cost of the electrode paste manufacturers, improve the use of factory production stability and the quality of the products. The total cost of using the manufacturer will not increase or increase is not much.

　　Also some of the electrode paste manufacturers to update one or two kinds of raw materials, not all updated, no effect, or the effect is not obvious. In fact, the overall integration of the effect is not reflected, in particular, the use of modified coal tar pitch there are technical problems, the need for professional and technical personnel guidance.

　　Equipment to "update"

　　Equipment is the production of hardware, in advocating science and technology progress today, the hardware is not hard, it means that the competitiveness is not strong. Although some enterprises also updated some of the equipment, but overall equipment is not enough, we must from the crushing, screening, grinding, mixing, kneading, forming a comprehensive package. Especially the paste forming can not be used. Paste molding machine not only can produce large pieces of paste into small pieces of paste, but also increase the plasticity of the electrode paste, to solve the use of large paste paste in the furnace to melt easily formed holes. The effect of electrode paste was improved.

　　The graphite electrode is mainly made from the petroleum coke and needle coke, coal tar pitch as the binder, after calcination, mixing, kneading, pressing, baking and graphitization, and made the processing machine, it is a conductor in an electric arc furnace to form arc release electricity for heating and melting of the charge, it can be divided into ordinary power, high power and ultra high power according to the quality index level.

　　Graphite electrodes has compact and even structure, good electric conduction and heat-conducting properties, high mechanical strength and strong oxidization corrosion resistance at high temperature through calcination, intermediate crushing, screening, dosing, mixing, compression, roasting, high pressure impregnation, graphitization, machining and other processes, it is widely used for arc furnaces and submerged arc furnaces to smelt various alloy steel, yellow phosphorus, industry silicon, brown aluminum oxide and other alloy and nonmetal materials and is an important component of modern raw material industry.

　　Graphite electrode is used in EAF and LF for steel making, as well as in electric smelting furnace for producing industrial silicon, phosphorus, etc. the graphite electrodes are widely use in electric furnaces and ladle refining furnaces for steel making and used in electric smelhing furnaces for producing industrial silicon, yellow phosphorus, corundum, nonmetals and so on. It is one essential part of the raw material industry.

　　The programmable properties of the graphite electrodes: good electrical conductivity;high resistance to thermal shock; high mechanical strength.Our products are characterized by superior compact structure, good electrical and thermal conductivity, high mechanical strength and high resistance to oxidation and corrosion in high temperature.

　　The advantage of the graphite electrode, graphite electrode is more and more widely used in the iron and steel industry.It makes less pollution and saves more power,it's good for our environment.The graphite electrode has long working-life,as it needn't to be changed often,that reduce the labor indensity of the works and avoid much danger.

　　1, by the wet graphite electrode, to be dry before use.

　　2, remove the foam plastic protective cap on the hole of the spare graphite electrode, and check whether the thread in the electrode hole is complete.

　　3, with oil and water of compressed air to clean up the spare graphite electrode surface and the hole of the screw thread; avoid cleaned with a group or a wire brush wire cloth.

　　4, the joint carefully screwed standby graphite electrode end (not recommended the connector directly into the furnace to replace the down electrode) electrode hole, not collide with thread.

　　5, the electrode sling (recommended spreader of graphite material) electrode hole screwed into the other end of the inner electrode standby.

　　6, lifting the electrodes, the soft cushion material to alternate electrode installed below the connector at one end, to prevent the collision loss joint ground; rings with a hook extending into the sling for lifting, lifting electrode should be smooth to prevent electrode from the B-side loose or and other fixing devices collision.

　　7, will alternate electrode hanging to stay connected to the upper electrode, electrode hole alignment falls slowly; spinning reserve electrode, the spiral hook and electrode rotation decreased; when the distance between two branches of the electrode surface was 10-20mm, again with compressed air to clean the exposed part of the electrodes at both ends and joints; in the lower electrode, not too fierce, otherwise because of the fierce collision, resulting in damage to the thread of electrode holes and joints.

　　8, with a torque wrench to tighten the alternate electrode, until a electrode end close contact (electrode and connecting the right connections cracks less than 0.05mm).

　　Graphite is very common in nature, and graphene is the highest intensity substance known to man, but scientists may still need to spend several years or even decades to find a graphite into a large high quality graphene "thin film" method, so you can use it to human made a variety of useful material. According to scientists, graphene in addition to abnormal firm, also has a series of unique characteristics, graphene is the best known conductivity material, which makes it has great application potential in the field of microelectronics. Researchers have even considered graphene as a substitute for silicon, which can be used to produce the next super computer

The graphite electrode has the advantages of easy processing, high metal removal rate in EDM, as well as a small loss of graphite. Therefore, more and more mold factory abandon the use of copper electrode and choose graphite electrode. So, what are the advantages of graphite?
1).The proportion of graphite is copper 1/5, the weight of the same volume of graphite is 5 times lighter than that of copper. the large electrodes made from copper are too heavy, in the long running, it is very unfavorable to the accuracy of the machine tool spindle on the EDM. But graphite is opposite and in safe handling!
2).The graphite can have a very high processing speed, the general speed of the processing of graphite is 3-5 times faster than the ordinary metal. And it can reduce tool wear and electrode loss when we choose suitable hardness tool and graphite,.
3).The graphite is easy to shape and will not be deformed, and some of the shape of the electrode with copper is not easy to make and can be easily achieved with graphite. Such as thin slice electrode, the copper deformed easily in machine processing and EDM. But graphite can easily reach and graphite in EDM can with larger current and processing speed, we don't worry about that deformation because of the high temperature and the workpiece is damaged.
4).The finishing and polishing of graphite, in general, the graphite after the processing do not need to be polished. It also reduces the precision error of the graphite electrode after forming and shortens the production cycle.
5).The EDM speed of graphite is quick and losss is mall because the melting point of copper is 1083 degrees Celsius, while the temperature of EDM at 1100 C, the copper electrode in the EDM is relatively easy to consume and wear. And the graphite in 3550 degrees will appear sublimation, as long as the proper processing parameters, graphite electrode can achieve the theoretical significance of the zero loss. So as to avoid the number of electrode processing.
6).In the design and programming of electrode, graphite electrode design is also different. Many mold factory usually reserved in different copper electrode roughing and finishing, and the graphite electrode can be used for the same amount, which reduces the number of workload and machine CAD/CAM. For this reason alone is enough to reduce the mold design and processing cycle, but also reduce the probability of error processing.

　　1、Graphite electrodes can be used As refractory material: graphite and its products have properties of high - strength, high temperature resistance, mainly used to produce graphite crucible in the metallurgical industry, in steelmaking in graphite is usually used for the protection of steel ingot agent, metallurgical furnace lining.

　　2、Graphite electrodes can be used as the Conductive material: in the electrical industry as manufacturing electrode, carbon brush, carbon rod, carbon nanotubes, mercury is the cathode, graphite gaskets, telephone parts, TV picture tube coating.

　　3、Graphite electrodes can be used as Wear resistant lubricating material: graphite is often used as a lubricant in the mechanical industry. Lubricating oil is often not used in high speed, high temperature and high pressure, while the graphite wear resistant material can be used in the temperature of the 200~2000 (a) at a very high speed, without lubricating oil. Many devices for conveying corrosive media are widely used in the piston cup, sealing rings and bearings, which do not need to be added to the lubricating oil. Shi Moru is one of many metal processing (drawing, drawing) the good lubricant.

　　4、Graphite Electroded material has good chemical stability. After special processing of graphite, with corrosion resistance, good thermal conductivity, low permeability characteristics, which is widely used in the manufacturing of heat exchanger, reaction tank, condenser, the burning tower, absorption tower, a cooler, a heater, a filter and pump equipment. Widely used in petrochemical, wet metallurgy, acid alkali production, synthetic fiber, paper and other industrial sectors, can save a lot of metal materials.

　　5、 For casting, foundry, molding and high temperature metallurgical material: due to graphite thermal expansion coefficient is small, and the capability of rapid quench heat changes, as the mold of the glass, the use of graphite black metal by casting, precise size, smooth surface and high rate of finished products, processed or minor processing can be used, so we can save a lot of metal. Production of hard alloy and other powder metallurgy process, usually made of graphite materials and sintered in the use of the porcelain boat. The crystal growth crucible, the area of the refining container, the support fixture, the induction heater and so on are all made of high purity graphite. Graphite can also be used for vacuum smelting of graphite heat insulation board and base, high temperature resistance furnace tube, rod, plate, grid and other components..

　　　Graphite electrodes are usually used for melting metal, such as aluminum melting and copper melting and so on. Graphite electrodes easier processing, and processing speed significantly faster than copper electrodes. For example, the use of milling machining graphite, its processing speed than other metal working 2 to 3 times faster and does not require additional manual processing, and copper electrodes require manpower grinding frustration. Similarly, if the high-speed machining centers graphite electrode, faster, more efficient manner, but also no dust problems. In these processes, select the right tools and graphite hardness can reduce the wear loss and damage of copper tools. If the time is relatively specific milling graphite electrode and copper electrode graphite electrodes, graphite 67% faster than the copper electrode in electrical discharge machining under normal circumstances, the use of graphite electrodes machining copper electrode faster than 58%.As a result, the processing time significantly reduced, while also reducing manufacturing costs.

　　Extruded graphite, the electrode material. Which according to particle size graphite points, can be divided into: the details of the graphite structure, coarse graphite (particle size generally about 0.8mm), there is a graphite electrode 3) lubrication: lubrication performance depends on the graphite flake graphite size, the larger scales, the smaller the friction coefficient, the better the lubricating properties.

　　If you need graphite or carbon by-products , We interested in supplying those materials for you. To buy graphite and carbon by-products please contact us and ask our sales manager for a quote.