Semi-automatic gas shield welding construction technology for aluminum conductors

Abstract

The invention discloses semi-automatic gas shield welding construction technologies and particularly discloses a semi-automatic gas shield welding construction technology for aluminum conductors, belonging to the technical field of arc welding production of non-ferrous metals. The invention provides the semi-automatic gas shield welding construction technology for the tubular aluminum conductors which has safety for operation, high production efficiency and ensured welding quality. The construction technology comprises the following steps of: firstly assembling the tubular aluminum conductorsneeded to be welded, meanwhile, mounting a U-shaped wire-feeding wheel, a flexible plastic wire-guiding sleeve and an air-cooling welding gun on a four-wheel wire feeder, then mounting the four-wheelwire feeder on the positive pole of semi-automatic gas shield welding equipment; and cleaning the range of 30-50 mm away from the periphery of welding junction parts of the tubular aluminum conductors, preheating the welding junction parts which are eligibly cleaned to the temperature not lower than 200 DEG C, switching on the welding power source of the semi-automatic direct-current gas shield welding equipment, carrying out welding on welding junctions till a whole welding junction is finished welding.

Description

technical field [0001] The invention relates to a construction process for semi-automatic gas shielded welding, in particular to a construction technology for semi-automatic gas shielded welding of aluminum conductors, and belongs to the technical field of arc welding production of non-ferrous metals. Background technique [0002] Aluminum conductors made of aluminum materials have been widely used in the power industry as electrical energy carriers. Tubular aluminum conductors are used in the indoor and outdoor overhead busbars of substations, and the connecting lines from generators of thermal power plants to main transformers. The power plant generator lead wire is generally a closed tubular aluminum conductor, the middle pipe is a conductor, the outer pipe is a closed shell, and the conductor and the shell are supported by a porcelain bottle, which we call aluminum busbar; aluminum busbar equipment is due to transportation problems due to manufacturing considerations , ...

AI Technical Summary

Problems solved by technology

[0003] During installation and construction, the traditional welding process is oxygen welding and manual tungsten argon arc welding; oxygen welding requires auxiliary special flux, and the preparation process before welding is complicated. During welding, one is serious burning of alloy elements, and the other is poor weld formation. , The third is that the welding deformation is large, and the fourth is that the welding wire has to undergo chemical cleaning processes such as alkali washing and acid neutralization, which brings unsafe factors to welders caused by strong acid and alkali burns

Manual argon arc welding requires special welding equipment, the welding speed is slow and the labor efficiency is low, the strong arc heat radiation is harmful to the welder, and the welding wire also has a chemical cleaning process

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