UHP400 UHP450 Graphite Electrode with Nipple for Eaf Furnace¹

Product Description Products Detail:Graphite electrode refers to a kind of high-temperature resistant graphite conductive material, which is made ofpetroleum coke and asphalt coke as aggregates and coal tar pitch as binder through raw material calcination,crushing and grinding, batching, kneading, molding, baking, impregnation, graphitization and mechanical processing.It is called artificial graphite electrode (graphite electrode for short), to distinguish it from natural graphite electrodeprepared with natural graphite as raw material. Processing Program:1) The graphite is immersed in oil. Before machining,the graphite material should be immersed in the engineoil for tens of hours to make the oil penetrate into thegraphite material, so that the ash powder will not flyduring machining and a smooth surface can be obtained.2) Paint scribing. After the electrode is rough machinedon the contour surface, a thin layer of white paint shall besprayed on the scribing surface before scribing, so thatthe lines are clear and convenient for machining.3) Perform machining. Application:(1) For electric arc steelmaking furnace(2) For submerged arc furnace(3) For resistance furnace(4) Used to prepare special-shaped graphite productsITEMPRHPUHPElectric Resistivity(μΩ·m)≤8.0≤7.0≤6.2Bending Strength(MPa)≥10.0≥10.5≥10.5Elestic modulus(GPa)≤12.0≤12.0≤14.0Bulk Density(g/cm3)≥1.66≥1.62≥1.58Coefficient of Thermal Expansion(X10-6/oC)≤2.7≤2.4≤1.5Ash(%)≤0.3≤0.3≤0.3Form of processing:There are mainly three types of graphite electrode machining: pressurized vibration method, CNC automatic forming method andmechanical processing method.(1) Pressurized vibration method: the pressurized vibration method requires a special machine tool, and the shape of the electrodemaster mold is opposite to that of the electrode. Graphite materials and forming tools are placed relatively during processing, leavinga certain gap. The processing fluid composed of water and abrasive is injected into the machine. At the same time of passing throughthe processing fluid, the graphite and the forming tool are subject to ultrasonic vibration. Under the action of abrasive impact force,the graphite is stripped to the required shape. The abrasive is SiC, B4C or diamond. The rougher the abrasive is, the faster themachining speed is. When the machine tool is working, it adopts sealed type and water curtain type for processing. It is suitable forEDM for mass production.(2) Numerical control automatic forming method: the numerical control automatic forming method requires a special graphite electrodeforming machine, which adopts the numerical control method, has an automatic tool exchange device, and can accommodate multipletools. In order to improve the processing environment, the graphite electrode is surrounded by a water curtain to prevent the graphitedust from dispersing everywhere. In addition, the wet machining method can also be used to prevent tool wear and graphite dustdispersion by using water-soluble cutting fluid. The machine tool has a high-performance filtering device, which can separate thecutting fluid from the graphite chips, and can ensure continuous processing for a long time. It is an ideal special equipment forgraphite electrode processing, and is suitable for electrode processing for moulds. However, its price is relatively high and it isnot widely used in China.(3) Machining method: the machining method is the main method adopted by domestic general mold manufacturers.  Graphite ElectrodeProjectNominal diameter mm 75~130150~225250~300350~450500~800LevelExcellent-Excellent-Excellent-Excellent-Excellent-Resistivity μΩ·m ≤Electrode8.510910.5910.5910.5910.5Nipple88888Flexural strength MPa ≥Electrode1010876.5Nipple1515151515Elastic Modulus GPa ≤Electrode9.39.39.39.39.3Nipple1414141414Bulk density g/cm3 ≥Electrode1.581.531.531.531.52Nipple1.71.71.71.71.7Thermal expansion coefficient 10-6/oCRoom temperature~600oC ≥Electrode2.92.92.92.92.9 Nipple2.72.72.82.82.8Ash content % ≤0.50.50.50.50.5 Company Profile: FAQ:Q: Are you a trading compnay or manufacture?A: We're factory.Q:How long is your delivery time?A: Generally it will need about 15-20 days if the goods are not in stock. Q:Do you provide samples?A: Yes, we could provide the stock free sample, buyer only pay the freight cost. Q:What is the main customers?A:The main customers are from all over the world.  

OK ! We suggest you detail your product requirements and company information here.
Enter between 20 to 4,000 characters.
Your inquiry content must be between 20 to 4000 characters.