Friction welding method of aluminum guide rod and steel claw

Abstract

The invention discloses a friction welding method of an aluminum guide rod and a steel claw. The method for directly welding the aluminum guide rod and the steel claw in a friction mode is adopted, four stages of frictional heating are adopted, and the rotation speed, the friction pressure and the friction time of a main shaft in the friction process of each stage are set; according to upsetting, when rotation of the main shaft is not stopped completely, rapid feeding is started, the upsetting process is started, and the phase error of the aluminum guide rod and the steel jaw is smaller than +1 degree or -1 degree when braking is over by utilizing closed-loop control. The friction welding joint of the aluminum guide rod and the steel claw is beautiful, a whole static stretching contrast test of the joint is performed on the performance of the joint, the mechanical property of an anode guide rod assembly utilizing friction welding is larger than the mechanical property of an anode rod guide rod assembly utilizing explosion soldering flakes, and therefore the mechanical strength of the joint can meet the requirement of practical application.

Description

technical field [0001] The invention belongs to the technical field of friction welding, in particular to the friction welding of an aluminum guide rod and a steel claw. Background technique [0002] The anode conductive device is an important conductive part of the electrolytic cell. It is of great significance to design a new connection method of aluminum guide rod-steel composite structure for energy saving and consumption reduction of aluminum electrolytic production. At present, the general-purpose prebaked anode conductive device for aluminum electrolytic cells is composed of aluminum guide rods, aluminum-steel explosive welding composite sheets and cast steel claws. Although this device can basically meet the needs of the electrolysis process, there are also Many questions, such as: [0003] 1. The conductive bottleneck with high resistivity, the main function of the aluminum-steel explosion chip is to solve the connection problem of the two different materials of th...

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Problems solved by technology

[0004] 2. The joint is easy to crack, and the fusion welding between the aluminum guide rod and the aluminum end of the explosion piece and the explosion welding piece are easy to crack

[0005] 3. High labor intensity and large consumption of welding consumables. Aluminum-steel explosive discs are connected to aluminum guide rods and cast steel claws. At present, melting welding is used, and workers have high labor intensity and poor working conditions.

In order to reduce or avoid the problem of high-power friction welding phase, there is a method of friction welding with a transitional conical or circular pie-shaped steel sheet in the middle and aluminum guide rods and steel claws separately or at the same time. Part of the connection is automated, but the joint increases contact. Interface still has high resistivity issues

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