High Power Graphite Electrode

1.Description Graphite electrode, mainly petroleum coke, needle coke as raw material, coal pitch as binder, calcination, ingredients, kneading, molding, baking and graphitization, machining and made, which is released in electric arc furnace in the form of arc conductor of electricity to heat melting furnace charge, graphite electrode with low resistivity,graphite electrode good conductivity, graphite electrode low ash, graphite electrode uniform and graphite electrode compact structure, good oxidation resistance, high mechanical strength, etc. 2. Technical Data of HP Graphite Electrodes  Items Classification Unit Nominal Diameter (mm) HP Graphite Electrode 200-400 450-500 550-600 Resistivity Electrode μΩm ≤ 7.0 7.5 7.5 Nipple 6.3 6.3 6.3 Bending Strength Electrode Mpa ≥ 10.5 10.0 8.5 Nipple 17.0 17.0 17.0 Young’s Modulus Electrode Gpa ≤ 14.0 14.0 14.0 Nipple 16.0 16.0 16.0 Bulk Density Electrode g/cm3 ≥ 1.60 1.60 1.60 Nipple 1.72 1.72 1.72 CTE（100℃-600℃） Electrode ×10-6/℃ ≤ 2.4 2.4 2.4 Nipple 2.2 2.2 2.2 Ash Content Electrode % ≤ 0.5 0.5 0.5 Nipple 3.Recommended current load of HP Graphite Electrodes Grade Nominal Dia. Allowable current  A Current density  A/cm2 HP electrode 200mm 5500～9000 18～25 250mm 8000～13000 18～25 300mm 13000～17400 17～24 350mm 17400～24000 17～24 400mm 21000～31000 16～24 450mm 25000～40000 15～24 500mm 30000～48000 15～24 550mm 34000～53000 14～22 600mm 38000～58000 13～21