Electrode Holding Arm

The conductive cross arm of the electric furnace serves as a clamping and supporting electrode, and transmits electric 

energy to the electrode to heat it up. The requirements for the conductive cross arm are: light weight, good stiffness, 

low impedance and long life.

One end of the conductive cross arm is supported on the column, and the electrode is clamped at one end and has 

a lifting function. The light weight of the conductive cross arm means that the driving work for lifting the electrode 

column is relatively reduced. In the electric steelmaking process, the high-frequency arc of high power is formed 

between the end of the electrode and the molten steel, thereby causing strong electromagnetic vibration of the 

conductive cross arm, so the conductive cross arm should also have good rigidity and strength. In order to be able 

to melt the charge at maximum arc power, the conductive cross arm should also have a low resistance value and 

reactance value.

The copper-steel composite conductive cross arm is used as an upgraded product of the all-steel conductive cross 

arm. It is made by using the outer copper plate of the outer arm copper-steel composite plate of the cross arm to 

conduct electricity, thereby eliminating the conductive steel pipe or copper pipe of the conductive cross arm system 

and conducting the conductive cross arm. The two functions of the supporting electrode and the supporting electrode 

are combined into one, which reduces the resistance value and the reactance value of the conductive cross arm to 

some extent, and improves the electrical conductivity, but since the copper plate in the copper steel composite plate 

is relatively thin. The cross-sectional area is relatively small, so the resistance value and the reactance value have not 

been fundamentally improved.