A method for replacing and repairing the connecting plate of copper cross-arm electrode cable

Abstract

The invention relates to a replacing and repairing method for a red copper cross arm electrode and a cable connecting plate. The replacing and repairing method includes the repairing steps that copper steel composite plates are replaced with T2 red copper plates; four strengthening studs are additionally arranged at an end between an electrode box and the cable connecting plate and are welded to an end plate of the box; four holes are drilled in the corresponding positions of each T2 red copper plate, and chambering is carried out on one face close to the electrode; the T2 red copper plates with the drilled holes are fixedly connected with the cross arm electrode through the studs; gas metal arc welding is adopted for completing welding between the T2 red copper plates and the cross arm electrode, and welding is carried out according to a certain sequence; and the three T2 red copper plates are folded to be in a shape of a Chinese character 'qi' and are attached to welding lines of the cross arm electrode box and the cable connecting plate in three directions to conduct annular welding. The process is simple and rapid, the repairing cost is low, the requirements for the external environment and condition are not high in the repairing process, safety production accidents can be effectively reduced after the method is applied, the service life of equipment is prolonged, the using cost of the equipment is reduced, and the daily maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of welding repair methods, and relates to a method for replacing and repairing a connecting plate of a copper cross-arm electrode cable. Background technique [0002] At present, most of the copper electrode cross arms and cable connecting plates of HF refining furnaces in my country's steelmaking plants are copper-steel composite plate structures. Through the large current of 30000~40000A required for production, the current must be effectively transmitted to the copper-steel composite connecting plate through the cable connector, and then to the cross-arm electrode for work. Due to the inconsistent electrical conductivity and thermal conductivity of copper and steel during production, the thermal expansion and cold contraction of the steel plate and copper plate in the copper-steel composite plate are also inconsistent. During the production process, the copper plate on the surface of the cable connection p...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a method for replacing and repairing the connection plate of the copper cross-arm electrode cable, which can overcome the poor safety and operability of the prior art, High labor intensity, low efficiency, poor effect and other shortcomings, and can achieve good results in terms of safety, efficiency, quality, labor costs, etc.