Tank inner ring submerged-arc welding back face protection soldering flux conveying type full-automatic conveying recycling machine

Abstract

The invention discloses a tank inner ring submerged-arc welding back face protection soldering flux conveying type full-automatic conveying recycling machine. The machine mainly comprises a lift truck, a soldering flux storage tank and a soldering flux conveyer. The machine is characterized in that the soldering flux conveyer and the soldering flux storage tank are arranged on the lift truck, soldering flux flows out of the soldering flux storage tank and is stacked on a conveying belt of the soldering flux conveyer through a soldering flux conveying pipe, and soldering flux which is conveyedout of the soldering flux conveyer and falls into a soldering flux collecting disc is pumped back into the soldering flux storage tank through a soldering flux pumpback pipe. According to the full-automatic conveying recycling machine provided by the invention, it is guaranteed that submerged-arc welding obtains the required depth of penetration and melt-through is prevented, the radiographic inspection percent of pass is high, energy, materials and manpower are saved, scattered soldering flux can be prevented from contaminating a site environment, and the welding production efficiency is improved.

Description

technical field [0001] The invention relates to the field of railway intermodal welding, in particular to a protective flux transmission type automatic conveying and recycling machine. Background technique [0002] During the submerged arc welding of the inner ring of the tank, in order to prevent welding through, the welding current and voltage should not be too large. After welding, the depth of penetration must reach half of the thickness of the plate. The base metal is formed in the form of cracks in the outer ring submerged arc welding, but the pass rate of radiographic flaw detection inside the overall weld is very low, resulting in a large number of repairs. Or when the submerged arc welding of the inner ring requires full penetration, it is necessary to use a tray to support the flux on the back of the weld, and at the same time manually add flux protection manually. The methods and equipment are very backward, and the protection effect is not good. Its shortcomings...

AI Technical Summary

Problems solved by technology

[0002] During the submerged arc welding of the inner ring of the tank, in order to prevent welding through, the welding current and voltage should not be too large. After welding, the depth of penetration must reach half of the thickness of the plate. The base metal is formed in the form of cracks in the outer ring submerged arc welding, but the pass rate of the internal radiographic flaw detection of the overall weld is very low, resulting in a large number of repairs

Or when the inner ring submerged arc welding requires full penetration, it is necessary to use a tray to support the flux on the back of the weld, and at the same time manually add flux protection manually. The methods and equipment are very backward, and the protection effect is not good.

Its shortcomings are: (1) When the back of the inner ring submerged arc welding is not protected by flux, the qualified rate of radiographic flaw detection is low, which wastes energy, materials and manpower

(2) When the back of the inner ring submerged arc welding is protected by flux, the protective flux needs to be manually added, which is a waste of manpower

At the same time, a large amount of flux is scattered on the welding site, and the contaminated flux cannot be recycled, resulting in waste and polluting the site environment

(3) Reduce welding production efficiency

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