Electric Arc Furnace Graphite Electrodes 100-750mm

Graphite Electrode Product Parameters

Electric Arc Furnace (EAF) graphite electrodes, sized 100–750 mm, are purpose-built conductors that form the backbone of EAF steelmaking, where they convert electrical energy into intense heat (up to 3,000°C) via arcing between the electrode tip and molten metal bath.

​​Core Functions​​: In EAFs, these electrodes serve three primary roles:

(1) ​​Heat Generation​​: The arc plasma (ionized gas) between the electrode and scrap metal melts 50–300-ton scrap charges in 40–90 minutes;

(2) ​​Chemical Refining​​: They supply energy for post-melting adjustments (e.g., desulfurization, deoxidation) and enable stirring via electromagnetic forces induced by current flow, accelerating impurity removal;

(3) ​​Temperature Control​​: Precise current adjustment via electrode manipulation maintains optimal bath temperatures (1,550–1,650°C) for alloying and casting.

​​Technical Specifications​​: Diameters directly correlate with current capacity: 100–300 mm electrodes handle 20–60 kA (small EAFs), 300–500 mm support 60–100 kA (mid-sized EAFs), and 500–750 mm manage 100–120 kA (mega-EAFs). Lengths range from 1.8–3.5 meters, with tapered tips (1–2°) to distribute current evenly and reduce tip wear. High-purity graphite (ash <0.3%) minimizes energy loss, while isostatic pressing during manufacturing ensures uniform density (1.65–1.75 g/cm³) and mechanical strength (compressive strength >70 MPa).

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