HP graphite electrode is the conducting element for electric arc furnaces steelmaking. It is made of petroleum coke, needle coke, coal pitch and produced by a series of strict production processes. High-current lines insert through the graphite electrode port inside the furnace body. This will releases electric energy in the arc furnace to heat the furnace.
The demand for the larger diameter electrodes has been increasing as EAF furnace sizes become larger. Graphite electrodes with diameter of 500 mm or 600 mm have become increasingly popular in recent years.
Anti-oxidation treatment for longevity.
High-purity, high-density, strong chemical stability.
High machining accuracy, good surface finishing.
High mechanical strength, low electrical resistance.
Resistant to cracking & spalling.
High resistance to oxidation and thermal shock.
Graphite electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.
DC electric arc furnace.
AC electric arc furnace.
Submerged arc furnace.
Table 1: Technical Specification of HP Graphite Electrode
|Diameter||Resistance||Density||Flexure Strength||Elastic Modulus||Ash Content||CTE||Current Load||Current Density|
|(≤, µΩ·m)||(≥, g/cm3)||(≥, MPa)||(≤, GPa)||(≤, %)||(100 °C – 600 °C)||(A)||(A/cm2)|
Table 2: Graphite Electrode Size & Tolerance
|Diameter (mm)||Length (mm)|
|Nominal Diameter||Actual Diameter||Nominal Length||Tolerance||Short Length|
There should be less than two defects or holes on the electrode surface, the maximum size of which is mentioned in the below chart.
There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width should be 0.3 to 1.0 mm.
The width of black area on electrode surface should be less than 1/10 of the electrode circumference and the length should be less than 1/3 of the electrode.
|SpecificationDefect Dimension||Nominal Diameter of Graphite Electrode (mm)|
|(< 20 mm should be negligible)||(< 30 mm should be negligible)|
|(< 5 mm should be negligible)||(< 10 mm should be negligible)|
Q1: Is your company AO HUI a manufacturer or trader?
A1: Manufacturer, some time we help our clients to purchase relevant products as a trader.
Q2: What’s the MOQ?
A2. No limitation.
Q3: Can we visit your factory?
A3: Of course ,welcome at any time,seeing is believing
Q4: What’s your payment terms?
Q5: Is your company accept customization?
A5: Professional technology teams and engineers all can satisfy you.
Q6: How do you guarantee quality?
A6: For every production processing,we have complete QC system for the chemical composition and Physical properties.After production,all the goods will be tested ,and the quality certificate will be shipped along with goods.
Q7: What’s the proportion of abroad business?
A7: Abroad market around 50%; Domestic market around 50%; and now export proportion is increasing.
Q8: Your company would provide samples?
A8: Yes, we could supply samples for free, and the freight will be undertaken by clients.