Removing device for residue in pipeline flash butt welding line

Abstract

A device for removing internal residues in pipeline flash butt welding seams, comprising a device body, the device body includes a hydraulic mechanism, a slag removal push knife, a guide wheel assembly and a push rod, wherein the slag removal push knife is arranged on the hydraulic mechanism and The opening and shrinking adjustment is realized through the hydraulic mechanism. The push rod is set on the hydraulic mechanism to control the movement of the device body in the pipeline. Smooth walking inside. The present invention has the advantages of compact structure, low manufacturing cost, and easy miniaturization of the whole machine. By being used in conjunction with pipeline flash welding equipment, the residue on the inner wall of the weld can be removed after pipeline flash welding, and the efficiency of slag removal is high, and the surface of the weld seam after slag removal The quality is good, and the present invention has strong adaptability, and is suitable for cleaning the slag in the inner welding seam of the metal pipe with a nominal diameter of 219-600 mm and a wall thickness of 8-20 mm.

Description

technical field [0001] The invention relates to the technical field of pipeline flash butt welding seam slag cleaning equipment, in particular to a pipeline flash butt welding seam internal slag removal device. Background technique [0002] Flash butt welding is an advanced welding method. The welding process parameters are easy to control and adjust, the process is stable, and the joint quality is good. Compared with the traditional welding method, it has the following advantages: ① It belongs to solid phase welding, there is no molten pool, and the welding quality high; ② no need to add deposited metal, the chemical composition of the welded joint is the same as that of the base metal; ③ no need for gas protection or slag protection, eliminating the source of pollution; ④ high degree of automation, does not rely on manual welding skills; ⑤ short welding cycle, high welding efficiency. [0003] Although flash welding technology has many advantages, there is a very critical ...

AI Technical Summary

Problems solved by technology

The labor intensity of manual grinding workers is high and the efficiency is low; the flame cutting method uses oxygen burning to remove slag, because the flash welding slag contains a lot of metal oxides, this method will lead to an increase in the weld defect rate, and the weld surface quality after slag removal is relatively poor Poor, it is difficult to ensure the quality of the weld seam

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