Arsam MetalARSAM METAL
Elettrodi di grafite (UHP)
Graphite ElectrodeNUOVO

Elettrodi di grafite (UHP)

Ultra-high-power (UHP) graphite electrodes are needle-coke-based conductors that carry the high secondary current into electric arc and ladle furnaces, sustaining the arc that melts steel scrap. The graphitized needle-coke matrix gives low electrical resistivity (≤ 5.8 µΩ·m) and high bulk density (≥ 1.68 g/cm³), so the column runs cooler at high amperage, oxidizes more slowly, and resists thermal shock during charge cycling. Lower resistivity means less I²R loss and lower specific electrode consumption per tonne of liquid steel. Primary use is EAF steelmaking and ladle furnace (LF) refining, plus submerged-arc furnaces and foundry melting. Diameters span 300-700 mm to match transformer rating and current density. The UHP grade is specified where high current density, ash ≤ 0.3%, and flexural strength ≥ 10 MPa are needed to limit breakage and tip spalling under arc instability; HP suits lighter duty. Each shipment ships with COA and MTC. Multi-regional sourcing supports CIF Marmara delivery and Gebze bonded stock, 20 MT FCL. Send diameter, grade, and nipple connection for a firm RFQ.

Specifiche tecniche

Diameter300-700mm
GradeUHP / HP
Bulk Density≥ 1.68 g/cm³
Resistivity≤ 5.8 µΩ·m
Flexural Strength≥ 10 MPa
Ceneri≤ 0.3%

Applicazioni

Applicazioni industriali
EAF steelmaking
Ladle furnace (LF)
Submerged-arc furnace
Foundry melting

Domande frequenti

How do I choose between UHP and HP grade graphite electrodes?
Grade follows current density and furnace duty. UHP electrodes, with bulk density ≥ 1.68 g/cm³ and resistivity ≤ 5.8 µΩ·m, suit high-current EAF and LF operation where I²R losses and thermal shock are severe. HP grade fits lower power densities and submerged-arc or foundry melting. Match diameter (300-700mm) to your transformer secondary current and electrode regulation, then confirm nipple connection compatibility for the full column.
What specific electrode consumption should I expect, and how is sizing handled?
Specific consumption in modern EAF practice typically runs near 1.5-2.5 kg per ton of liquid steel, driven by tip oxidation, sidewall oxidation, and breakage rather than a fixed dosage. Lower resistivity and density ≥ 1.68 g/cm³ reduce tip wear at high current. Size selection pairs diameter to current density; we supply matched electrode-nipple columns by diameter (300-700mm) so joint integrity and consumption stay predictable across the full string.
What are the packaging, lead time, and minimum order terms?
Electrodes ship in wooden crates or pallets, capped and sealed to protect threads and prevent moisture pickup, with nipples pre-fitted or boxed separately. Typical movement is 20 MT FCL, with smaller LCL consignments available from Gebze bonded stock. Lead time depends on diameter and grade mix; delivery is quoted CIF Marmara or ex-bonded stock. Share your diameter, grade, and monthly tonnage for a firm schedule and MOQ.
What quality documentation and testing accompany each shipment?
Each lot ships with a COA reporting bulk density, electrical resistivity, flexural strength, and ash against the UHP/HP specification (density ≥ 1.68 g/cm³, resistivity ≤ 5.8 µΩ·m, flexural ≥ 10 MPa, ash ≤ 0.3%). MTC and dimensional records are available on request. Multi-regional sourcing is qualified to consistent test methods, and pre-shipment inspection or third-party verification can be arranged before release.
Can these electrodes substitute for or alternate with other carbon products?
Within graphite electrodes, HP grade can stand in for UHP only where current density and thermal-shock load are lower; substituting downward at full UHP power raises breakage and consumption. They are not interchangeable with Söderberg electrode paste, which is self-baking for continuous submerged-arc smelting. For recarburizing or deoxidation needs, a separate carbon raiser is the correct product. Send your furnace power, diameter, and duty cycle and we will match grade.

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Elettrodi di grafite (UHP) (Graphite Electrode)

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