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  Introduction   A graphite rotor is a high-performance rotary component made from high-density, high-purity graphite, designed to withstand extreme heat, corrosion, and mechanical wear. As a critical part of aluminum melt refining systems, it is also called a degassing rotor or stirring rod. Its primary role is to remove hydrogen gas and inclusions from molten aluminum via rotary degassing, significantly improving the quality and mechanical properties of aluminum products. Beyond aluminum processing, graphite rotors serve chemical, metallurgical, and new energy industries where harsh operating conditions prevail.     What Is a Graphite Rotor & How Does It Work?   Basic Structure   A graphite rotor consists of two core parts:   - Rotor Shaft: Transmits torque and delivers inert gas (argon/nitrogen) to the melt.   - Impeller/Nozzle: Breaks gas into micro-bubbles and stirs the molten metal.   Working Principle   1. The rotor rotates at 200–700 rpm (adjustable via frequency converter) while inert gas flows through the shaft.   2. The high-speed impeller shears gas into micro-sized bubbles (1–5 mm), dispersing them evenly in the aluminum melt.   3. Bubbles absorb hydrogen via partial pressure difference and adsorb oxide inclusions (e.g., Al₂O₃) through surface tension.   4. Contaminant-laden bubbles rise and escape the melt, leaving purified aluminum with reduced porosity and higher purity.   Key Advantage   Unlike metal rotors, graphite’s chemical inertness prevents reaction with molten aluminum, ensuring no contamination and long-term stability.   Core Features of High-Quality Graphite Rotors   1. Exceptional High-Temperature Resistance   - Withstands continuous operation at 700–800°C (aluminum melting point) and short-term exposure up to 3000°C.   - Low thermal expansion coefficient ensures dimensional stability during rapid temperature changes.   2. Superior Corrosion & Oxidation Resistance   - Resists attack by molten aluminum, acids, alkalis, and most corrosive chemicals.   - Optional anti-oxidation coating (e.g., SiC-based) extends service life from 30 days to 50–120 days.   3. High Mechanical Strength & Durability   - Made from high-purity (99.9% C), high-density graphite (1.6–1.85 g/cm³) for excellent compression and wear resistance.   - Outperforms metal/polymer rotors in longevity, reducing maintenance and replacement costs.   4. Excellent Thermal Conductivity & Self-Lubrication   - High thermal conductivity accelerates heat dissipation, preventing local overheating.   - Self-lubricating graphite surface minimizes friction, eliminating the need for additional lubricants.   Main Applications   1. Aluminum & Aluminum Alloy Processing (Primary Use)   - Degassing & Purification: Removes hydrogen (<0.1 ml/100g Al) and inclusions for castings, foils, and automotive parts (wheels, engine components).   - Grain Refinement: Improves fluidity and mechanical properties (tensile strength, hardness) of aluminum products.   2. Non-Ferrous Metal Smelting   - Zinc, copper, and magnesium melt purification for high-purity ingots and precision castings.   3. Chemical Industry   - Corrosion-resistant stirrers and pump rotors for reactors handling strong acids, alkalis, and organic solvents.   4. New Energy & Metallurgy   - Lithium-ion battery anode material mixing and grinding.   - High-temperature furnace components and electrolytic cell stirrers.   Specifications & Customization   Standard Sizes   - Rotor Diameter: Φ70 mm – Φ250 mm.   - Impeller Diameter: Φ85 mm – Φ305 mm.   - Length: Customizable (300 mm – 1500 mm) based on furnace depth.   Material Grades   - High-Purity Graphite: 99.9% carbon content for standard aluminum processing.   - Ultra-High-Density Graphite: For heavy-duty, long-cycle operations.   - Coated Graphite: SiC or antioxidant coatings for extended service life.   Custom Options   - Impeller design (number of blades, angle) tailored to specific degassing efficiency requirements.   - Connection types (threaded, flange) to match existing equipment.   Why Choose Our Graphite Rotors?   1. Premium Raw Materials: Only high-purity, high-density graphite blocks with strict quality control (ISO 9001).   2. Advanced Manufacturing: Precision CNC machining for tight tolerances and optimal bubble formation.   3. Long Service Life: Proprietary anti-oxidation coating technology ensures 50–120 days of continuous use.   4. Cost-Effective: Reduced downtime and replacement frequency lower overall operational costs.   5. Custom Solutions: Tailored designs for unique furnace sizes, melt volumes, and degassing targets.   Conclusion   Graphite rotors are indispensable for modern aluminum processing and high-temperature industrial applications. Their unique combination of high-temperature resistance, corrosion resistance, and mechanical durability delivers reliable, cost-effective performance while improving product quality. Whether you need standard sizes or custom-engineered solutions, our high-quality graphite rotors are designed to meet your most demanding operational requirements.

High-Purity Graphite Rotor for Aluminum Molten Metal Degassing   Introduction   High-purity graphite rotors are the core key components of rotary degassing systems, widely applied in aluminum alloy smelting, molten metal purification and non-ferrous metal processing industries. Manufactured from ultra-fine grain, high-density graphite materials with strict precision machining technology, our graphite rotors perfectly solve the problems of hydrogen inclusion, impurity residue and porosity defects in molten aluminum. They are essential equipment accessories to improve aluminum product quality, reduce production loss and extend equipment service life.   Different from ordinary graphite parts, our graphite degassing rotors adopt professional anti-oxidation impregnation and coating treatment. They maintain stable mechanical performance and chemical inertness in long-term high-temperature molten metal environments, effectively overcoming the defects of easy oxidation, wear and breakage of traditional rotors, and providing reliable support for continuous industrial production.   Working Principle of Graphite Rotor   The graphite rotor assembly consists of a graphite shaft and a graphite impeller (rotor head). During operation, the rotor is driven by the motor to rotate at a high speed, and inert gases such as nitrogen and argon are evenly injected into the molten aluminum through the rotating rotor structure.   The high-speed rotating impeller cuts the air flow into a large number of tiny and uniform bubbles, which are fully dispersed in the molten metal. These fine bubbles fully contact with hydrogen, oxide inclusions and impurities in the aluminum liquid, adsorb and carry harmful substances to the liquid surface to complete degassing and slag removal purification. This physical purification method has no pollution to the molten metal and can significantly reduce the porosity rate of aluminum castings, greatly improving the compactness and mechanical properties of finished products.   The rotor speed supports stepless frequency conversion adjustment, with a maximum speed of 700r/min. It can adapt to different molten metal volumes and purification process requirements, realizing efficient and stable metal purification.   Core Product Advantages   1. Ultra-High Purity & Density Material Our graphite rotors are made of ≥99% high-purity graphite raw materials, with uniform internal structure and high density. The product has excellent high-temperature resistance, can work stably in the high-temperature environment of molten aluminum above 700℃ for a long time, and will not deform or crack. It has strong resistance to molten aluminum erosion and metal flow impact, far exceeding the service life of ordinary graphite rotors. 2. Professional Anti-Oxidation Treatment All products are treated with special resin impregnation and high-temperature anti-oxidation coating. The surface forms a dense protective layer, which effectively isolates air and high-temperature oxidation. It solves the problem of rapid wear and failure of exposed rotor parts in high-temperature working environment, and the overall service life is increased by 30%-50%. 3. Precision Machining & Stable Operation Adopting CNC integrated precision processing technology, the rotor shaft and impeller have high matching accuracy, smooth rotation without jitter, stable air output and uniform bubble dispersion. It is compatible with mainstream degassing equipment such as SNIF, MINT and ALPUR on the market, with strong versatility and no need to modify the equipment. 4. Corrosion & Chemical Stability Graphite has excellent chemical inertness, resisting corrosion of acid, alkali, salt and various organic solvents. It does not react chemically with molten aluminum, zinc and other non-ferrous metals, ensuring zero impurity pollution to molten metal and effectively guaranteeing the purity of finished metal products. 5. Customized Size & Flexible Matching We support standard and customized size production. The conventional rotor diameter ranges from 70mm to 250mm, and the impeller diameter ranges from 85mm to 350mm. We can customize special specifications, shaft lengths and impeller structures according to customers’ equipment parameters and production process requirements to meet diverse industrial production needs.   Product Application Scenarios   Our high-performance graphite rotors are widely used in various precision metal smelting and purification fields:   - Aluminum alloy casting, aluminum ingot and aluminum profile production - Automotive, aerospace aluminum parts precision manufacturing - Non-ferrous metal molten aluminum, molten zinc degassing and slag removal purification - Hardware casting, die-casting industry metal liquid refining - Industrial continuous smelting and automated production lines   Why Choose Our Graphite Rotor   As a professional graphite product supplier focusing on foreign trade export, we focus on the R&D, production and customization of high-quality graphite industrial accessories. We abandon inferior low-density graphite raw materials and strictly control every production process from raw material selection, high-temperature pressing, precision machining to anti-oxidation treatment.   1. Quality Assurance: All products are inspected layer by layer, with stable quality and consistent performance, supporting long-term bulk supply for industrial customers. 2. Cost-Effective: Factory direct sales eliminate intermediate links, providing competitive wholesale prices while ensuring high quality, helping customers reduce production and replacement costs. 3. Fast Delivery: Standard size products are in stock, customized orders have short production cycles and fast delivery efficiency. 4. Professional Service: We provide one-stop services including product selection, scheme customization, technical guidance and after-sales support, and solve equipment matching and product use problems for customers at any time.   Final Summary   High-quality graphite rotor is an indispensable core accessory for improving the yield and quality of non-ferrous metal smelting. Our high-purity anti-oxidation graphite rotor has the advantages of high temperature resistance, corrosion resistance, long service life and stable purification effect, which can effectively optimize your metal smelting process, reduce defective rate and create greater economic benefits for production.   We welcome global customers from the metallurgical and casting industry to consult and customize samples. We are committed to providing reliable and high-cost graphite degassing rotor solutions for global industrial manufacturers.

Graphite Rotor: The Core Component for Molten Aluminum Purification   In modern aluminum casting and non-ferrous metal refining, graphite rotors are irreplaceable core components in molten metal degassing systems. They are widely used in aluminum die-casting, secondary aluminum recycling, and automotive/aerospace component casting, helping foundries efficiently remove hydrogen and impurities from molten aluminum, significantly improving product quality and production efficiency .     What Is a Graphite Rotor?   A graphite rotor is a high-temperature resistant rotating part made of high-purity, high-density, fine-grain graphite, often with anti-oxidation coatings or resin impregnation to enhance durability . A complete assembly consists of two main parts:   - Graphite Shaft: Connects to the drive system, transmitting power for rotation.   - Graphite Impeller (Rotor Head): The submerged part that breaks inert gas into micro-bubbles for degassing . It is designed to operate stably in molten aluminum at 700–800°C, with typical specifications: rotor diameter Φ70–250mm, impeller diameter Φ85–305mm, and adjustable speed up to 700r/min.   Working Principle   The core function is rotary degassing & impurity removal:   1. Inert gas (argon/nitrogen) is injected into the molten aluminum through the rotor’s central channel.   2. The high-speed rotating impeller breaks the gas into micron-sized bubbles (10–100μm), dispersing them evenly in the melt.   3. Bubbles absorb hydrogen and adsorb oxide inclusions while rising, carrying impurities to the surface for removal.   4. The streamlined impeller reduces rotation resistance, ensuring full contact between bubbles and molten metal (degassing efficiency ≥50%).   Key Features & Advantages   1. Exceptional High-Temperature Resistance   Withstands long-term erosion by 700°C+ molten aluminum without softening or deformation; stable in inert atmosphere up to 1000°C.   2. Superior Chemical Stability   Inert to molten aluminum and inert gases, avoiding secondary contamination; resists corrosion from acids, alkalis, and salts.   3. Excellent Thermal Shock Resistance   Resists rapid temperature changes without cracking, adapting to frequent start-stop operations in foundries.   4. High Efficiency & Cost Savings   - Generates fine bubbles for thorough degassing, reducing casting porosity by 60%+.   - Self-lubricating graphite minimizes friction loss, extending service life (2–3 months in continuous use).   - Lightweight design reduces energy consumption compared to metal rotors.   5. Customizable Design   Available in various sizes, lengths, and impeller shapes; supports CNC precision machining to match different furnace types and degassing requirements .   Main Applications   - Aluminum Die-Casting: For automotive parts (engine blocks, wheels), electronic components, and household appliances .   - Secondary Aluminum Recycling: Purifies recycled aluminum melt to meet primary aluminum quality standards .   - Aerospace & Defense: Produces high-precision aluminum components with strict porosity requirements.   - Metallurgical Foundries: Used in non-ferrous metal (copper, zinc) refining and degassing systems.   Why Choose Our Graphite Rotors?   - High-Purity Raw Materials: Made from 99.9%+ pure graphite with high density (1.75–1.85g/cm³) for maximum durability.   - Advanced Anti-Oxidation Treatment: Silicon carbide (SiC) coating or resin impregnation extends service life by 30–50%.   - Precision Manufacturing: CNC-machined impellers with streamlined design ensure optimal bubble dispersion and degassing efficiency.   - Strict Quality Control: 100% inspection for dimensional accuracy, density, and oxidation resistance before shipment.   - Custom Solutions: Tailored rotor size, coating, and design to fit your specific furnace and production needs .   Conclusion   As a critical component for molten aluminum purification, high-quality graphite rotors directly impact casting quality and production costs. Our graphite rotors combine premium materials, advanced technology, and precise craftsmanship, delivering reliable performance and long service life for your aluminum processing operations. Contact us today to get customized graphite rotor solutions and elevate your production efficiency!

  What is Graphite Plug?   Graphite plug, also known as graphite stopper plug, is a solid refractory sealing component made of high-density graphite. It is mainly used for blocking, sealing and flow cut-off of molten metal outlets in industrial furnaces, smelting crucibles and high-temperature containers. With compact structure and excellent high-temperature stability, graphite plugs are ideal sealing consumables for metal smelting and casting industries.   Key Performance Features of Graphite Plug   1. Superior High Temperature Stability Made of high-density graphite, the graphite plug will not soften, melt or deform under continuous high temperature above 2800℃. It adapts to long-term high-temperature smelting working environment.   2. Tight Sealing & Good Closure After precision grinding processing, the contact surface is smooth and flat with excellent fitting performance. It can perfectly block the liquid outlet to prevent molten metal leakage and ensure production safety.   3. Strong Anti-Corrosion & Anti-Adhesion Graphite material is not wetted by molten metal such as steel, iron, copper and aluminum. The surface repels melts without adhesion, which is easy to clean and reuse moderately.   4. High Mechanical Strength & Wear Resistance Through high-pressure compression molding, the product has high density and strong compression resistance. It can resist mechanical friction and impact during furnace opening and closing.   5. Easy Installation & Low Maintenance Integral forming structure without internal gaps. It is simple to install, disassemble and replace. No complex maintenance is required to reduce enterprise production costs.   Main Application Scenarios   - Metallurgical Smelting Furnace: Used for outlet sealing of intermediate frequency furnaces, electric arc furnaces and smelting crucibles to control molten metal discharge.   - **Non-Ferrous Metal Casting: Applied in aluminum alloy, copper alloy and zinc alloy smelting industry for rapid flow cut-off.   - High-Temperature Reaction Vessel: Sealing and blocking for high-temperature chemical reactors to isolate gas and liquid.   - Industrial Kiln Accessories: Matched with graphite crucible and graphite mold to improve the overall sealing performance of the kiln.   Product Parameter Standard   - Carbon Purity: 99.5% - 99.9%   - Bulk Density: 1.80 g/cm³ - 1.90 g/cm³   - Hardness: 45-55 Shore hardness   - Service Temperature: Normal use at 2800℃   - Surface Treatment: Precision polishing, smooth seamless surface   - Shape: Cylindrical, circular truncated cone, customized irregular shape   Advantages of Our Graphite Plug Products   1. Raw material optimization: Adopt low-ash high-purity graphite to reduce impurities and avoid metal contamination.   2. Densification treatment: Secondary high-temperature impregnation process to enhance oxidation resistance and prolong service life.   3. Strict quality control: Each batch of products is inspected for density, hardness and flatness to ensure stable quality.   4. Global supply capability: We support bulk wholesale and small-batch trial orders, with stable stock and fast delivery.   Purchase & Custom Service   We provide one-stop graphite plug customization solutions. According to customer’s furnace caliber, pressure resistance requirement and smelting temperature, we customize exclusive size and structure.   Our graphite refractory products have been exported to Europe, Southeast Asia, the Middle East and other regions. With reliable quality and competitive factory price, we have won long-term cooperation from global industrial customers. Send us an inquiry now to get customized samples and ex-factory price.

Introduction to Graphite Nozzle   A graphite nozzle is a precision refractory component processed from high-purity artificial graphite raw materials. With a unique tubular and conical structure, it is specially designed to control the flow rate, flow direction and flow stability of molten metal, high-temperature gas and liquid. Thanks to graphite’s excellent physical and chemical properties, graphite nozzles have become indispensable consumables in high-temperature industrial scenarios, widely recognized in metallurgy, casting, aerospace and laser processing industries.   Core Advantages of Our Graphite Nozzle   1. Extreme High Temperature Resistance Graphite owns an ultra-high melting point of 3650℃. Our graphite nozzles maintain stable physical structure without melting or deformation under long-term ultra-high temperature working conditions. They perfectly adapt to severe high-temperature environments such as molten steel and molten aluminum casting.   2. Low Thermal Expansion & Thermal Shock Resistance The product features an extremely low thermal expansion coefficient. It will not crack or damage under rapid temperature rise and fall, effectively resisting thermal shock damage and extending service life.   3. Excellent Corrosion & Oxidation Resistance High-purity graphite material is chemically inert. It is insoluble in acid-base solutions and not wetted by molten metal. It can resist corrosion of various high-temperature melts and industrial chemicals.   4. Smooth Flow & Self-Lubrication The dense and smooth inner wall provides natural lubricity, reducing fluid friction. It ensures uniform and stable flow of molten metal to avoid blockage and improve casting yield.   5. High Dimensional Precision & Customization We adopt advanced CNC machining technology. All graphite nozzles have precise size tolerance, smooth cutting surface and customizable shapes including cylindrical, tapered and special-shaped nozzles.   Industrial Application of Graphite Nozzle   - Metallurgy & Metal Casting: Used for flow guiding of molten steel, molten copper and molten aluminum in continuous casting furnaces to control liquid metal flow steadily.   - Aerospace Industry: Applied to rocket engine tail nozzles to withstand ultra-high temperature combustion gas and ensure engine operation safety.   - Laser Welding & Cutting: Serve as auxiliary nozzles for high-power laser equipment to dissipate heat and improve processing stability.   - Chemical & Laboratory Industry: Suitable for high-temperature reaction vessels and gas spraying equipment for precise fluid control.   Product Technical Specifications   - Raw Material: High-purity artificial graphite (99.9% carbon content)   - Bulk Density: ≥1.75 g/cm³   - Compressive Strength: ≥65 MPa   - Working Temperature: ≤3000℃   - Processing Method: High-precision CNC machining   - Custom Service: Support customized size, aperture and appearance structure   Why Choose Our Graphite Nozzle   We are a professional graphite refractory supplier focusing on high-quality graphite deep-processing products. We strictly select low-ash high-purity graphite raw materials and adopt strict production quality inspection standards. Our graphite nozzles have uniform density, strong oxidation resistance and long service life.   We support OEM & ODM customization, provide free technical parameter consultation and fast global shipping. Whether for standard-size products or non-standard customized parts, we can meet your industrial production requirements. Contact us to get the latest wholesale quotation.    

    How to Choose the Right Graphite Rotor for Aluminum Die Casting   Introduction   In aluminum die casting, the graphite rotor is the core component for melt degassing and purification. Its selection directly affects degassing efficiency, melt quality, and production cost. Choosing a suitable graphite rotor can reduce hydrogen porosity, minimize oxide inclusions, and extend service life. This guide will walk you through the key factors to select the optimal graphite rotor for your aluminum die casting process.   1. Understand Core Functions & Working Conditions   A graphite rotor stirs molten aluminum (660–780°C) and injects inert gas (nitrogen/argon) to remove hydrogen and impurities. Key working conditions to note:   - Melt temperature: Common aluminum alloys require 700–760°C; higher temps demand better oxidation resistance.   - Gas type: Inert gases (N₂/Ar) are standard; chlorine-based gases require high-purity graphite with anti-oxidation coatings.   - Operation mode: Continuous (24h) or intermittent production affects rotor durability requirements.   2. Select Graphite Material Grade   Material quality determines rotor performance and lifespan. Prioritize high-purity isostatic graphite with these properties:   - Density: 1.70–1.90 g/cm³ → Higher density improves mechanical strength and corrosion resistance.   - Porosity: Low (≤15%) → Reduces aluminum penetration and oxidation; controlled porosity ensures uniform bubble distribution.   - Thermal conductivity: 120–180 W/m·K → Ensures even heat dissipation and thermal shock resistance.   - Anti-oxidation coating: Essential for temps >750°C → Extends lifespan by 30–50% in high-temperature or chlorine environments.   Avoid low-grade graphite: It oxidizes fast, sheds particles, and contaminates the melt.   3. Match Rotor Geometry & Design   Rotor design directly impacts degassing efficiency and bubble quality. Choose based on your casting volume and quality requirements:   Common Rotor Types   - Vane/Propeller Rotors: Simple, durable, cost-effective; ideal for standard, high-volume castings.     - Radial-Hole/Porous Rotors: Generate ultra-fine bubbles; perfect for high-precision castings requiring low hydrogen content.     - High-Shear Rotors: Narrow-gap design for extremely fine bubbles; used in aerospace-grade castings (higher wear).     Key Design Parameters   - Shaft length: Matches degassing chamber depth (tip 20–50 mm below melt surface to avoid vortex).   - Impeller diameter: Proportional to melt volume (larger diameters for 500–1000 kg batches).   - Connection type: Standard M8/M10/M12 threads for easy installation.   4. Optimize Operational Parameters   Even the best rotor fails with wrong settings. Align parameters with rotor specs:   - Rotation speed: 200–400 rpm (high-shear) or 80–150 rpm (standard); 300–350 rpm balances efficiency and wear.   - Gas flow rate: 15–17 L/min (optimal for most rotors); too high causes turbulence, too low reduces degassing.   - Immersion depth: Tip 30–50 mm below surface; anti-vortex plates recommended to prevent air entrainment.   5. Evaluate Supplier & Quality Assurance   - Certifications: ISO 9001, CE, and material test reports (MTR) for graphite purity.   - Customization: Supplier should tailor length, diameter, and coating to your furnace/degassing unit.   - Warranty & support: 6–12 month warranty; technical support for installation and maintenance.   Final Checklist for Selection   1. Confirm melt temp (700–760°C) and gas type (N₂/Ar).   2. Choose high-purity isostatic graphite (density ≥1.75 g/cm³).   3. Select geometry: Vane (standard), porous (high-precision), or high-shear (aerospace).   4. Match shaft length/impeller diameter to degassing chamber and melt volume.   5. Verify anti-oxidation coating for temps >750°C.   6. Align speed (300 rpm) and gas flow (16 L/min) with rotor specs.   7. Select a certified supplier with customization and warranty support.   Conclusion   The right graphite rotor balances material quality, design, and operational parameters. By focusing on high-purity graphite, application-specific geometry, and optimized settings, you can achieve efficient degassing, high-quality aluminum castings, and lower long-term costs. Always partner with a trusted supplier to ensure consistent performance and technical support

1. Correct clamping position of electrode holderThe electrode holder should not be clamped at the connection between the electrode and the electrode threaded hole.Sandwiched between white wires at each end of the electrode.At the same time, before clamping the electrode with the clamping device, the surface of the electrode and the clamping device is blown clean with compressed air to ensure the good conduction of current and heat flow between the electrode and the clamping device, to prevent damage to the clamping device due to arc, so as to prolong the service life of the cage limit.2. What are the measures to reduce the oxidation consumption of eAF electrode?(1) Reduce the oxidation consumption around the electrode, strengthen the sealing of the furnace, reduce the air intrusion into the furnace, minimize the exposure time of the red hot electrode outside the furnace, and standardize the oxygen blowing operation.(2) For smelting furnace, if conditions permit, spray cooling technology can effectively reduce electrode side oxidation consumption.(3) The oxidation resistance of the electrode body can be improved by spraying antioxidant on the electrode surface in the steel plant or by using antioxidant impregnation technology before the electrode leaves the plant.3. What is the influence of electrode phase sequence on the use of electrode?In the process of electric arc furnace (EAF) steelmaking, the jumping phenomenon of positive and negative phase sequence is very important.If the electrode phase sequence is clockwise, the electrode will become loose after being energized for a period of time, which is easy to cause the electrode to become loose or the joint to break.The correct electrode phase sequence should be counterclockwise so that the electrodes are connected more and more tightly during use.4. Why should the phase electrode be aligned with the top hole of the furnace cover when eAF steelmaking?The electrode column should be aligned with the top hole of the furnace cover.The electrode column should avoid friction with the furnace cover.Otherwise, friction with the cover during lifting and lifting will cause the cover to squeeze and break the electrode.For AC furnaces, the three-phase electrode column should be kept parallel as far as possible. 5. How to apply torque when tightening the electrode?When tightening the electrode, the torque applied should be appropriate and the operation should be continuous.If the torque is too small, it will lead to loose joints;If the torque is too high, the electrode joint hole will crack.Use special electrode tightening tools when tightening.Don't twist it too tight or too loose.If there is a gap in the end contact after tightening, it must be removed and cleaned before tightening again.

Carbon and graphite productsA、Graphite electrode is mainly made of petroleum coke and needle coke as raw materials, using calcination, proportion, kneading, pressing, roasting, graphitization, mechanical processing and other binder.They are conductors that release electrical energy in the form of electric arcs to heat and melt furnace materials.According to its quality index can be divided into ordinary power, high power and ultra high power.Graphite electrodes include:(1) General power graphite electrode.The graphite electrode with current density less than 17A/cm 2 can be used in ordinary electric furnace such as steelmaking, ironmaking and smelting.(2) Oxidation resistant coated graphite electrode.The graphite electrode, coated with an oxidation protection, forms a conductive layer that conducts electricity and resists high-temperature oxidation, reducing the cost of the electrode during steelmaking.(3) High-power graphite electrode.Graphite electrodes with allowable current density of 2 / cm are mainly used in high-power electric arc furnaces for steelmaking.(4) Ultra-high power graphite electrode.Graphite electrodes with current densities greater than 25A/cm 2 are allowed.Mainly used in ultra-high power electric arc furnace for steelmaking.B、 graphite anodeMainly with petroleum coke as raw material, by calcination, batching, kneading, pressing, roasting, impregnation, graphitization, mechanical processing and become binder.Conductive anode used in electrolysis equipment in electrochemical industry.Include:(1) a variety of chemical applications of the anode plate.(2) various anodes.(3) special graphiteMainly with high quality petroleum coke as raw materials, raw materials, ingredients, mixing, pressing, crushing, remixing, molding, multiple roasting, multiple impregnation, purification, graphitization, mechanical processing as binder.It is widely used in aerospace, electronics and nuclear industries.It includes spectrum pure graphite, high purity, high strength, high density and pyrolytic graphite.(4) graphite heat exchangerC、The artificial graphite is processed into the desired shape, and then impregnated and cured with resin to make impervious graphite products for heat exchange.It is a heat exchanger based on artificial impervious graphite, mainly used in chemical industry.Include:(1) plug hole heat exchanger;(2) radial heat exchanger;(3) falling film heat exchanger;(4) tube heat exchanger.(5) Carbon electrodeD、Anthracite, metallurgical coke (or petroleum coke) and other carbon materials as raw materials, without graphitization.Not suitable for electric furnace smelting high grade alloy steel.Include:(l) Dusty electrodes (electrodes made of anthracite, metallurgical coke and bituminous coke);(2) Recovery electrodes (electrodes made of artificial graphite and natural graphite);(3) carbon resistance strip (carbon grid brick);(4) carbon anode (petroleum coke pre-baked anode);(5) Calcination of electrode billet.(6) carbon blocks

Carbon products can be divided into graphite electrode, carbon block, graphite anode, carbon electrode, paste, electric carbon, carbon fiber, special graphite, graphite heat exchanger and so on.According to the allowed current density, graphite electrode can be divided into ordinary power graphite electrode, high power graphite electrode and ultra-high power graphite electrode.The carbon block can be divided into blast furnace carbon block, aluminum carbon block, electric furnace carbon block.According to the processing depth, carbon products can be divided into carbon products, graphite products, carbon fiber and graphite fiber.According to the different raw materials and production process, carbon products can be divided into graphite products, carbon products, carbon fiber, special graphite products.Carbon products can be divided into multi-ash products and low-ash products according to ash content (ash content less than 1%).China's national and ministerial technical standards for carbon products are classified according to their different uses and production processes.This classification method basically reflects the different uses and different production techniques of products, and is also convenient for accounting.The following describes the classification and description of carbon products.