Water-cooled electrode clamping equipment for steelmaking electric arc furnaces, ladle refining furnaces and ferroalloy refining furnaces. Electrode diameters Ø300–Ø600 mm (Ø11.8–Ø23.6 in), currents from 7.7 kA to 70 kA, nine standard sizes.
Steel plants describe this equipment differently depending on where they are. If any of these terms match what you are sourcing, you are on the right page.
Electrode clamp, electrode holder, clamping head, contact shoe assembly; the arm is the current-conducting arm or copper-clad electrode arm. Electrode sizes are quoted in inches — 12", 14", 16", 20", 24" — and transformer current in kA.
Electrode holder, electrode clamping ring, current-conducting electrode arm; Elektrodenhalter, Elektrodentragarm, bras porte-électrode. Electrode diameters in millimetres, currents in kA, arms usually described as copper-clad or copper-steel composite.
Give us the electrode diameter in inches or millimetres, the transformer secondary current, and the furnace type. Drawings carry both units, and replacement parts are built to match the arm you already have.
The clamp holds the graphite electrode and passes the current into it. Disc springs provide the clamping force and the clamp releases pneumatically or hydraulically when the electrode is regulated or changed. Click any photo to enlarge.
For steelmaking electric arc furnaces, ladle refining furnaces and ferroalloy refining furnaces. Electrode diameter Ø300–Ø600 mm (Ø11.8–Ø23.6 in), current 7.7 kA to 70 kA, nine sizes in total.
The arm is welded from copper-steel clad plate. The copper layer carries the current and the steel layer takes the mechanical loads, so one structure does both jobs — this is what North American plants call a current-conducting arm and European plants a copper-clad electrode arm.
The arm frame contains a water jacket. With cooling water flowing, the arm withstands the flame and radiant heat coming off the furnace.
Disc springs drive the clamping ring onto the electrode, giving a high and constant clamping force. Release is pneumatic or hydraulic, so the electrode is held reliably and let go quickly.
The clamp itself is made from chrome-copper alloy or copper-steel clad plate, water cooled internally, which is what gives it a long service life under arc furnace conditions.
The ring is the part that actually grips the electrode. Same range: Ø300–Ø600 mm (Ø11.8–Ø23.6 in), 7.7–70 kA, nine sizes, chrome-copper alloy or copper-steel clad plate with internal water cooling.
| Product | EAF electrode clamp, current-conducting electrode arm and electrode clamping ring |
|---|---|
| Furnace types | Steelmaking electric arc furnace (EAF), ladle refining furnace (LF), ferroalloy refining furnace |
| Electrode diameter | Ø300–Ø600 mm (Ø11.8–Ø23.6 in) |
| Current range | 7.7 kA – 70 kA |
| Standard sizes | 9 sizes across the range |
| Arm construction | Copper-steel clad plate, welded: the copper layer carries the current, the steel layer takes the mechanical loads |
| Cooling | Water jacket inside the arm frame, water cooled, withstands the flame and radiant heat of the furnace |
| Clamping | Disc springs drive the clamping ring onto the electrode; pneumatic or hydraulic release |
| Clamp material | Chrome-copper alloy or copper-steel clad plate, internally water cooled for long service life |
| Finish | Machined contact faces; surface treatment to specification |
| Customisation | Built to drawing, to sample or to the existing part |
| Electrode diameter (mm) | US equivalent (in) | Current |
|---|---|---|
| Ø300 | Ø11.8 | 7.7–70 kA depending on furnace and transformer rating |
| Ø350 | Ø13.8 | 7.7–70 kA depending on furnace and transformer rating |
| Ø400 | Ø15.7 | 7.7–70 kA depending on furnace and transformer rating |
| Ø450 | Ø17.7 | 7.7–70 kA depending on furnace and transformer rating |
| Ø500 | Ø19.7 | 7.7–70 kA depending on furnace and transformer rating |
| Ø550 | Ø21.7 | 7.7–70 kA depending on furnace and transformer rating |
| Ø600 | Ø23.6 | 7.7–70 kA depending on furnace and transformer rating |
Nine standard sizes cover the Ø300–Ø600 mm range. The size for your furnace follows the electrode diameter, the transformer secondary current and the existing arm geometry, and is confirmed on the drawing before production.
Electrode clamps, arms and rings for AC electric arc furnaces in steel plants and foundries.
LF secondary metallurgy stations, where the same clamping equipment holds and feeds the electrodes.
Submerged arc and refining furnaces producing ferroalloys, with the arm exposed to high radiant heat.
Most of what we ship replaces equipment already in service. Send the drawing, the old part or photos with the main dimensions, and we manufacture a part that fits your existing arm, mast and regulation system.
Send the electrode diameter, the transformer current and photos or drawings of the existing part. We confirm the size and the geometry, then quote with price, weight, lead time and packing.
WhatsApp: +86 188 3715 8450
Email: sales@furnacecopperparts.com