Steel pipe inner burr tool

Abstract

The invention discloses a tool for removing burrs inside a steel tube. The tool comprises a center shaft, three arc-shaped blades are arranged on the center shaft, hinged to the center shaft, and located on the one-third outer walls of the center shaft respectively, the upper end and the lower end of the center shaft are respectively provided with a fixing plate, the arc-shaped blades are arranged between the two fixing plates, check blocks are arranged on the fixing plates, one side of each check block is an arc-shaped concave surface, the arc-shaped concave surfaces make contact with arc outer side lines of the arc-shaped blades. The tool further comprises blade angle adjusting mechanisms arranged between every two adjacent arc-shaped blades. According to the tool, removing efficiency of welding flux residues and protrusions on the inner wall of the steel tube is improved, when the center shaft rotates and the arc-shaped blades make contact with the welding flux residues and the protrusions on the inner wall of the steel tube, the arc-shaped blades are greatly impacted by interaction force exerted on the arc-shaped blades, the check blocks can support the arc-shaped blades when the included angle between the arc-shaped blades and the center shaft is maximum and the arc-shaped blades are impacted to the maximum degree, and therefore the arc-shaped blades are prevented from damage.

Description

technical field [0001] The invention relates to auxiliary equipment for an argon arc welding machine, in particular to a steel pipe internal burr cutter. Background technique [0002] When welding steel pipes, in order to ensure a good welding effect, the welding head and the steel pipe to be welded are generally placed in a semi-closed box to facilitate the introduction of protective gas and avoid sparks splashing around during welding. However, after the partial welding of the steel pipe is completed, the weld seam is directly exposed to the air. Due to the difference between the air temperature and the temperature of the weld seam itself, the weld seam will directly change from high temperature to low temperature. The strength of the steel itself reduces the stability of the steel pipe, and in severe cases it will directly cause the weld seam of the steel pipe to be de-welded; and a certain amount of burrs will be generated inside and outside the steel pipe near the weld ...

AI Technical Summary

Problems solved by technology

However, after the partial welding of the steel pipe is completed, the weld seam is directly exposed to the air. Due to the difference between the air temperature and the temperature of the weld seam itself, the weld seam will directly change from high temperature to low temperature. The strength of the steel itself reduces the stability of the steel pipe, and in severe cases it will directly cause the weld seam of the steel pipe to be de-welded; and a certain amount of burrs will be generated inside and outside the steel pipe near the weld seam during welding, which makes the flow rate of the fluid in the pipe drop when the steel pipe is in use. , and the protrusions at the weld are easily corroded, which leads to a decrease in the overall strength of the weld and reduces the service life of the steel pipe; traditional internal burr removal equipment mainly focuses on the solder residue and protrusions around the weld and the weld However, the solder residue and protrusions scattered to other parts of the inner wall of the steel pipe during welding are not cleaned thoroughly

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