Electric Arc Furnace Conductive Cross Arm

Electric Arc Furnace Conductive Cross Arm

The conductive cross arm is made of copper-steel composite plate or aluminum-steel composite plate, with a rectangular cross section and water cooling inside. It eliminates the many insulation links between the water-cooled conductive copper tube, electrode clamp and cross arm, greatly simplifying the cross arm structure. It is a new type of cross arm on ultra-high power electric arc furnace.

Composition of Conductive Cross Arm

The conductive cross arm is composed of electrode spray ring, electrode clamp, electrode clamp, electrode soot blowing device, electrode clamping system, cross arm body, water inlet pipe, water return pipe, oil inlet pipe, metal hose, water-cooled cable connection plate.

Electric Arc Furnace Conductive Cross Arm Structure

1. The hollow cross section and double-layer copper-steel composite plate are used to greatly reduce the skin effect, reduce impedance, and improve the electric heating efficiency;

2. The box-type structure of the hollow cross section and the internal water cooling channel greatly enhance the strength of the cross arm, which is conducive to the adjustment of electrode movement without causing vibration, and is conducive to arc stability;

3. The weight is lighter than the traditional steel tube cross arm, and the inertia is small, which is conducive to frequent lifting and lowering of the electrode.

Electric Arc Furnace Conductive Cross Arm Points

1. The electrode cross arm is welded with copper-steel composite plates, in which the copper layer is used for conductivity and the steel layer is used to support various mechanical forces.

2. There is a water interlayer in the electrode arm frame, which is cooled by water and can withstand the burning of the electric furnace flame.

3. The electrode clamp adopts a butterfly spring to drive the electrode to clamp, start or hydraulically release. The clamping force is large and the clamping electrode is reliable.

4. The electrode clamp is made of copper alloy or copper-steel composite plate, with internal water cooling and long service life.

The water-cooled composite conductive cross arm of the electric arc furnace is a rectangular beam structure, which is welded by copper-steel composite plates. The copper plate on its outer surface is conductive, which combines the two functions of the electrode cross arm, the conductive copper tube and the supporting electrode, into one. Since the conductive copper tube and many insulation links on the traditional electrode cross arm are cancelled, the structure is simplified, the diversion area is increased, and the impedance value and maintenance workload can be greatly reduced. 

It can be widely used in 5T-100T electric arc furnaces and large-tonnage ladle refining furnaces.