Graphite electrode is made from top quality low sulphur petroleum coke and high quality needle coke imported from Japan, using high grade coal pitch and other low ash material as adhesion agent.
Graphite electrode has many advantages such as structure uniformity,low ash material,low electric resistivity, low impurity content,low coefficient of thermal expansion, good electrical and thermal conductivity, good oxidation resistance, strong ability of thermal and mechanical vibration resistance,high mechanical strength, high machining accuracy, matching precision of electrode and joint fit.ItemMass Transfer and Separation Equipment
unitNominal Diameter(mm)YB/T4090-2000
Industry Standard
Typical Values300-400450-550350-400450-550Electric ResistivityElectrodeμΩ·m≤6.2≤6.54.6-6.04.8-6.2Nipple≤5.5≤5.53.5-4.53.5-4.5
Bending strengthElectrodeMpa≥10.5≥10.0≥11.0≥11.0Nipple≥16.0≥16.0≥18.0≥18.0
Elastic modulusElectrodeGpa≤14.0≤14.0≤13.0≤13.0Nipple≤18.0≤18.0≤17.0≤17.0
Bulk densityElectrodeg/cm3≥1.65≥1.641.66-1.721.65-1.72Nipple≥1.72≥1.701.75-1.821.75-1.82Stamping
AshElectrode%≤0.3≤0.3≤0.3≤0.3NippleCTE
(100-600)ºCElectrode10-6/ºC≤1.5≤1.51.20-1.401.20-1.40Nipple≤1.4≤1.41.10-1.301.10-1.30
William ZhouBusiness DevelopmentShandong Rongfu New Material Technology Co.,ltdAdd: Room A311 Commercial center, Wensheng street south, Shouguang City, ShVariable-Frequency Drive andongMP: +86 19953656505www.rongfuindustry.com