The length of the aluminum guide rod is 2000 ~ 2200mm, the cross section is rectangular, the size depends on the current passing through it, and the general current density is 35 ~ 40A/cm2.The cross-sectional area of aluminum guide rod in common use in China is rectangle or square.The conductive surface on the aluminum guide bar contacting with the large horizontal bus shall be processed. It shall be flat and smooth with less oxidation film on the surface to reduce the contact resistance.
Cast steel claw head is cast steel made of ZG25.According to the number of Anode carbon block assembly, the claws have three claws, four claws, six claws. The claws are arranged in a straight line or a rectangular shape. Each carbon block is connected with at least two claws.The aluminum guide rod and the cast steel claw are connected by an aluminum steel explosion welding block (or directly exploding the aluminum rod and the steel claw together).Explosive welding block is a double material combining steel and aluminum by means of detonating explosive. It can realize the transition of steel and aluminum to aluminum welding.This kind of explosive welding block has strong welding, high mechanical strength and small surface contact resistance.The aluminum - aluminum welding between the upper surface of the welding block and the anode guide rod is completed by argon or carbon arc welding, while the steel plate on the lower surface and the steel - steel welding on the top of the cast steel claw are completed by arc welding.Before assembly, the claw head should be sand washed and coated with graphite slurry, which can prevent the erosion of the steel claw head by molten iron, improve the contact state between the steel claw and cast iron, reduce the contact pressure drop, and facilitate the removal of phosphorus and iron during the guide rod cycle.Guide rod and steel claw connector, also referred to as "anode guide rod".The anode rod is recycled during production.After removing the residual group from the electrolytic cell, pressing the dephosphorizing iron ring, straightening the guide rod and sand washing the claw head, and coating the graphite, the residual group can be used to cast the new Anode carbon block assembly again.
