Pipe welding fixture

Abstract

The invention relates to a pipe welding fixture. The pipe welding fixture comprises two core rods and an opening piece. The core rods comprise matching surfaces and supporting surfaces. The outer sides of the core rods are provided with concave positions. The concave positions comprise top walls and side walls. Two blind holes are formed in each core rod. Two columns of through holes are formed ineach side wall, wherein one column of the through holes communicates with one blind hole, and the other column of the through holes communicates with the other blind hole. Heat conduction members areembedded in the concave positions and comprise inner lateral sides and outer lateral sides. The inner lateral sides are attached to the side walls. The outer lateral sides are flush with the supporting surfaces of the core rods. A plurality of through holes are formed in the heat conduction members. One openings of the plurality of through holes are in one-to-one correspondence communication withone column of the through holes. The other openings of the plurality of through holes are in one-to-one correspondence communication with the other column of through holes. The top end of one blind hole communicates with the refrigerant output end of a cooling system, and the top end of the other blind hole communicates with the refrigerant return end of the cooling system. The pipe welding fixture can avoid the local concentration of heat in a pipe.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a pipe fitting welding jig. Background technique [0002] When welding the workpiece outside the pipe fitting or butt welding the pipe fitting, it is usually necessary to use a fixture to position the pipe fitting. The existing fixture usually clamps and fixes the pipe fitting outside the pipe fitting. During the welding process, due to the thinner pipe wall thickness of the workpiece , The high temperature at the weld bead causes heat concentration, and the heat is difficult to dissipate quickly, which leads to the occurrence of missing welding and welding penetration in the weld bead, resulting in the scrapping of the workpiece. Contents of the invention [0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a pipe fitting welding jig, which can quickly dissipate the heat caused by welding, avoid heat concentration, and impro...

AI Technical Summary

Problems solved by technology

[0002] When welding the workpiece outside the pipe fitting or butt welding the pipe fitting, it is usually necessary to use a fixture to position the pipe fitting. The existing fixture usually clamps and fixes the pipe fitting outside the pipe fitting. During the welding process, due to the thinner pipe wall thickness of the workpiece , the high temperature at the weld bead causes heat concentration, and the heat is difficult to dissipate quickly, which leads to the occurrence of weld leakage and weld penetration in the weld bead, resulting in the scrapping of the workpiece

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