Graphite

Graphite electrode are manufactured with high quality raw materials including petroleum cokes, needle cokes and coal tar pitch through the production processes of calcining, crushing, screening, dosing, kneading, extruding, baking, impregnation, graphitization, machining. 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 tempertature. The graphite electrode are widely used in electric arc furnace and ladle refining furnaces foe steel making and used in ore smelting furnace for producing industrial silicocn,yellow phosphorus, corundum, nonmetals and so on, it is one essential part of the raw material industry.

Integrated supplier of anode materials for lithium-ion batteries< , br>XKT-Z2P Product Introduction ● Product introduction: using high-quality artificial coke as raw material, through grinding, granulation, carbonization, graphitization and other processes. ● Product features: high energy density, long  , cycle. ● Application scope: suitable for all kinds of energy storage/power cylindrical batteries, square batteries, soft pack batteries   Suggestions for Use The designed gram capacity of the material is 350mAh/g, and the compaction density is controlled at about 1.60~1.65g/cm3 (ad , justed according to areal dens ity and battery type); Appearance: The appearance of the product should be black powder, uniform color, no agglomeration, no sand and metal debris   Performance index: project unit Specifications Typical value testing method Particle size D10   μm ≥8 9.35 BT-2000 laser particle size analyzer D50 16.0±2.0 15.99 D90 ≤36 28.35 Ash % ≤0.10 0.01 GB/T 1429-2009 Tap density   g/cm3   ≥1.0   1.06 FZS4-4B of Beijing Iron and Steel Research  , Institute Type automatic tap density meter Specific surface area m2/g 1.3±0.3 1.55 Nitrogen adsorption method, Beijing Jinep F-SORB1400 BET analyzer Specific discharge capacity mAh/g ≥350.0 352 GB/T 18287-2000 General Specification for Lithium Ion Batteries for Cellular Phones First-tim , e efficiency % ≥93.0 94.2   Precautions during product use Ens , ure that the capacity of the negative electrode per unit area is greater than or equal to the capacity of the positive electrode per unit area to avoid lithium evolution during the charging process; Ensure that there is ,  a good interface between the isolation membrane and the electrode; The areal density a , nd compaction density of the electrode will

The graphite crucible for vacuum smelting of our company's intermediate frequency furnace is based on imported needle coke, three high graphite crushed and high-quality modified asphalt as the main raw materials. After firing at a predetermined temperature rise curve, it is then impregnated with high pressure, re-fired, and then graphitized at a temperature above 3000 ° C. The ultra-high power graphite crucible has the characteristics of compact and uniform structure, high strength, low resistivity, good thermal conductivity and high bulk density. It is widely used in high-frequency smelting of medium frequency furnaces, copper, copper alloys and non- ferrous metals. Product specifications: diameter Φ500 ～ 710 mm, height 500 ～ 1300 mm, smelting capacity 500 kg ～ 5000kg. 1.Handle with care during transportation, handling, and storage. Pay attention to waterproof and moisture- , proof. Do not damage it; 2. Purge the inner surface of the crucible with high pressure air before use; 3. Handle the smelting material gently, not too violent or too fast, and damage the inner wall of the crucible; 4. After the smelting is completed, the vacuum furnace can be destroyed only after cooling to a certain temperature; 5. The first time you pay attention to the slow temperature rise, it will help increase the service life.   Technical index of high power  , graphite crucible Technical index The difference between Graphite Crucible for Vacuum Smelting in Medium Frequency Furnace and Traditional Graphite Crucible. Ultra High Power Graphite Crucible Ultra-high power graphite crucible has the characteristics of high temperature resistance, strong thermal conductivity, good corrosion resistance and long service life. In the process of high temperature operation, the coefficient of thermal expansion is small, and it has certain strain resistance to quench and heat. It has strong corrosion resistance to acidic and alkaline solutions and excellent chemical stability. It does not take part in any chemical reactions in the smelting process. The inner wall of graphite crucible is smooth, and the melted liquid metal is not easy to leak and adhere to the inner wall of crucible, which makes the liquid metal have good fluidity and castability. In metallurgy, casting, machinery, chemical industry and other industries, it is widely used in the smelting of alloy tool steel and the smelting of non-ferrous metals and their alloys.   Product Specification Brandname diameter(mm) Height(mm) Upper bore inner diameter(mm) Bottom bore(mm) lnternal height(mm) SY-I 710 1360 570 540 1240 650 1360 540 510 1240 600 1280 490 460 1160 Description: S stands for plastic forming mode, Y stands for abnormal shape, l for melting copper, preciousmetals and rare earth alloy crucibles. The size and index requirements of crucible can be customized accord-ing to customer's requirements of furnace type pedestal.   Main Indicators ltems Unit Index Bulk density (≤) g/cm3 1.74 Specific resistance (≥) u·m 5.5 Flexural strength (≤) Mpa 11.5 Elasticity(≥) Gpa 14 Coefficient of thermal expansion (≥) 10-6/℃ 1.5 Ash (≥) % 0.2 Frequency of use (≤) T 60

Graphite crucibles play a vital role in various industries, including metallurgy, foundries, jewelry manufacturing, and more. These crucibles are essential for melting, casting, and refining metals at high temperatures.  Classification of Graphite Crucibles: Crucibles can be categorized into three groups: graphite crucibles, clay crucibles, and metal crucibles. YIDA as a lesding  Leading Supplier in China, specializes in manufacturing two types of graphite crucibles: machined graphite crucibles and graphite clay crucibles. Due to variations in performance, applications, and environmental conditions, the raw materials, production methods, technologies, and product specifications also differ. Natural crystalline graphite serves as the primary raw material for graphite crucibles, allowing them to retain the physical and chemical properties of natural graphite. These crucibles exhibit excellent thermal conductivity and high-temperature resistance. They have a low coefficient of thermal expansion during high-temperature applications and possess anti-strain properties in sudden cold and hot environments. Moreover, graphite crucibles demonstrate remarkable chemical stability in acidic and alkaline environments, showcasing strong corrosion resistance. With a wide range of sizes available, graphite crucibles are not limited by production scale, quantity, or smelting materials. They can be manufactured in any size and quantity while ensuring the purity of the smelting materials. As a result of their superior properties, graphite crucibles find extensive use in metallurgy, foundry, machinery, chemical, and other industrial sectors for smelting alloy tool steels, non- ferrous metals, and their alloys. They offer significant technical and economic benefits. Machined graphite crucibles Machined graphite crucibles, also known as high-purity graphite crucibles, are primarily machined using high-purity and high-density graphite materials, such as molded graphite material and isostatic graphite material. These crucibles are tailored to customers' specifications. Depending on the materials being melted, machined graphite crucibles can be further classified into steel melting crucibles, copper melting crucibles, gold melting crucibles, and analysis crucibles. Additionally, we can produce graphite arcs for various applications. Gold Refining Crucibles: Crucibles used for melting gold require raw materials with high purity and density. They should have a bulk density higher than 1.85g/cm3 and a total ash content of less than 50ppm. Gold melting crucibles are typically machined from high-purity, high-density, fine-grained graphite. The raw materials for these crucibles include molded graphite and isostatic graphite. Uranium Salt Refining Graphite Crucibles: These crucibles are large-sized graphite crucibles, commonly available in sizes such as Ф400mm × 700mm and Ф500mm × 800mm. The manufacturing process involves selecting high-quality, low-ash petroleum coke and then crushing, milling, blending, kneading, extrusion molding (or shaping), roasting, multiple impregnation, and graphitization purification. The primary raw material for these crucibles is isostatic graphite material. Graphite clay crucibles Graphite clay crucibles, also known as SiC graphite crucibles, consist mainly of silicon carbide (SiC) and graphite. They are primarily used for melting copper, aluminum, and other common metals. These crucibles have a relatively low cost and offer a large molten metal capacity. The main molding method for these crucibles is pressure forming. Important guidelines for crucible usage: Store the crucibles in a dry place to prevent exposure to rain. Before use, slowly bake them up to 500 degrees Celsius. The crucible should be filled based on its capacity, avoiding excessive pressure that could lead to metal cracking due to thermal expansion. When removing the molten metal, it is best to use a spoon and minimize the use of calipers or other tools. If tools are necessary, they should match the shape of the crucible to avoid generating excessive localized stress that could shorten the crucible's lifespan. https://www.yida-trading.com/

Apply to electric tools, rolling mill, motor, traction motor etc. Various kinds of AC/DC motor generator and exciter. In the current industrial electrical engineering projects, using carbon and graphite materials instead of copper wire harnesses as current-carrying friction contacts has become a trend and an important consideration item. Carbon or Graphite brushes with hardness and electrical resistance value required for DC motor and generator application. 1. All types and sizes of the brushes can be produced by us, whatever DIN standard or others. 2. We can also supply the graphite raw material of carbon brushes to meet the special requirement from customers. You only can produce the size and dimension to meet final user demand.

High-purity graphite refers to a form of graphite that has a high level of carbon content and a minimal amount of impurities. Graphite is an allotrope of carbon and consists of carbon atoms arranged in a hexagonal lattice structure. It is a highly versatile material known for its excellent thermal and electrical conductivity, low friction, and high chemical stability. The purity of graphite is determined by the amount of impurities present, such as ash, sulfur, nitrogen, and metals. High-purity graphite typically has a carbon content of 99% or higher, with impurity levels below 1%. The purification process involves various techniques, including chemical treatment, thermal treatment, and mechanical processing, to remove impurities and increase the carbon concentration. Apply to diamond bit and drilling tools with sintered mold etc.

Graphite For Continuous Casting refers to graphite products used in continuous casting crystallizers. Metal continuous casting technology is a new technology that directly forms molten metal through a continuous casting mold. Because it is directly formed without rolling, which avoids secondary heating of the metal, it can save a lot of energy. The characteristics of continuous casting graphite are: fine particles, uniform texture, high bulk density, small porosity and high strength Apply to metal continuous casting crystallizer, etc.

Graphite For EDM EDM graphite, also known as Electrical Discharge Machining graphite, refers to a specific type of graphite material that is widely used as an electrode in the EDM process.  Why use graphite for EDM?  Graphite has many advantages, making it the most widely used material for EDM electrodes: Resistance to Thermal Shock: Graphite has excellent resistance to thermal shock, allowing it to withstand the intense heat generated during EDM processes. This thermal stability ensures consistent performance and prevents cracking or damage to the electrode, even under rapid temperature changes. Low wear during sparking: Graphite exhibits low wear characteristics during the sparking process of EDM. This means that the graphite electrode experiences minimal erosion or degradation, resulting in longer electrode lifespan and reduced need for frequent replacements. Superior Machinability: Graphite is relatively easy to machine, allowing for the production of complex electrode designs with high precision. It can be readily shaped and machined into intricate geometries, enabling the fabrication of intricate and detailed EDM electrode profiles. Good Thermal Conductivity: Graphite exhibits excellent thermal conductivity, effectively dissipating heat generated during the EDM process. This feature helps to prevent excessive heat buildup, maintaining stability and prolonging the electrode's lifespan. Low Coefficient of Thermal Expansion: Graphite has a low coefficient of thermal expansion, meaning it undergoes minimal dimensional changes with temperature variations. This characteristic allows graphite electrodes to maintain their shape and size even when subjected to high temperatures during EDM processes.  Excellent Geometric Stability: Graphite offers exceptional geometric stability during EDM operations. It retains its shape and form consistently, enabling the electrode to maintain the desired dimensions throughout the machining process. Lighter: It is five time less dense than Copper which means lighter electrodes. Graphite Grades and EDM Large grain graphite (about 20 µm) with low densities (1.76 g/cm3) Fine grain graphite (~10 µm) of high density (1.82 g/cm3) Very fine grain graphite (~4 µm) with densities greater than 1.86 g/dm3   Graphite grades can vary in terms of their grain size, which affects the material's performance during EDM. Fine-grained graphite offers higher precision and finer surface finishes, making it suitable for intricate and detailed machining operations. Coarser-grained graphite, on the other hand, provides better material removal rates and is often used for roughing operations. 

Model NO.：700UHP Grade: UHP (Ultra High Power) Application: melt scraps, DRI, etc. by arc energy Applicable Nipple NO.: 374T4N/374T4L UHP graphite electrode are mostly made of 100% high-specification needle coke. Compared with HP and RP grades, UHP electrode requires highest technical expertise in each of the main process steps in making them, particularly baking, extrusion and graphitizing. The electrodes come with a wide range of sizes, but diameter of 600mm and 700mm high performance. UHP graphite electrode is often used for ultra high power electric arc furnaces (EAF) with current density greater than 25 A/cm2. Features Low resistivity Good conductivity Low ash Compact and uniform structure Good oxidation resistance Mechanical strength High current carrying capacity. Outstanding resistance to breakage. High resistance to oxidation and thermal shock.

Model NO.：600HP Grade: HP (High Power) Application: melt scraps, DRI, etc. by arc energy Applicable Nipple NO.: 317T4N/317T4L HP graphite electrode is basically made of calcined petroleum needle coke and coal tar pitch, to be used in high-power electric arc furnace for steelmaking or to refine steel in ladle furnace that withstands current density of 18-25/cm2. It is an important conducting material for electric furnace steel-making that releases electric energy in the form of arc to heat and melt furnace burden. Additionally, KFCC HP graphite electrode can also be used as  conducting material to smelt yellow phosphorus, industrial silicon, abrasive material and etc. Features Low resistivity Good conductivity Low ash Compact and uniform structure Good oxidation resistance Mechanical strength High current carrying capacity. Outstanding resistance to breakage. High resistance to oxidation and thermal shock.

Model NO.：450RP Grade: RP (Regular Power) Application: melt scraps, DRI, etc. by arc energy Applicable Nipple NO.: 241T4N/241T4L/241T3L/273T3N RP Graphite Electrode is mainly made of common Cacined Petroleum Coke, Graphitized in lower temperature. With its higher resistivity, larger CTE value and weaker thermal shock resistance ability, RP graphite electrode allows lower current density that pass through the furnace. RP graphite electrode can carry current density lower than 17A/cm2 which is mostly used in regular power electric furnace for - steelmaking - silicon smelting - yellow phosphorus smelting - other smelting application Features Low resistivity Good conductivity Low ash Compact and uniform structure Good oxidation resistance Mechanical strength High current carrying capacity. Outstanding resistance to breakage. High resistance to oxidation and thermal shock.