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Repair welding method for pipeline all-position butt joint TIG (Tungsten Inert Gas) internal welding

An all-position, pipeline technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of welding penetration, increasing the difficulty of welding process, sticking tungsten, etc., and achieve the effect of low risk and stable and reliable welding quality

Active Publication Date: 2021-12-10
HARBIN WELDING INST LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the welding process, due to the limitation of the internal welding space, the molten pool observation system cannot be installed and the welded pool cannot be observed, and the inherent unevenness and gaps of the actual product groove formation increase the difficulty of the welding process. Therefore, there is a risk of sticking tungsten or welding through the bottom of the internal welding

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  • Repair welding method for pipeline all-position butt joint TIG (Tungsten Inert Gas) internal welding
  • Repair welding method for pipeline all-position butt joint TIG (Tungsten Inert Gas) internal welding
  • Repair welding method for pipeline all-position butt joint TIG (Tungsten Inert Gas) internal welding

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] The purpose of the present invention is to provide a repair welding method for all-position butt joint TIG internal welding of pipelines, which is used to improve the welding quality of all-position butt joint internal welding of pipelines.

[0029] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying d...

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Abstract

The invention discloses a repair welding method for pipeline all-position butt joint TIG (Tungsten Inert Gas) internal welding, the repair welding method comprises the following steps of fixing a tile-shaped block with a circular step on the outer wall of a pipeline, normally welding a certain thickness of a welding seam on the inner side of the pipeline according to a set process, and then carrying out external manual repair welding, and the repair welding method is simple and easy to operate. In addition, the automatic repair welding process and the process for continuing to conduct internal welding on a pipeline butt joint in the step S9 are consistent with a bottoming process of normal TIG internal welding, and on-site additional development is not needed. The whole welding process is low in risk, and the welding quality is stable and reliable.

Description

technical field [0001] The invention relates to the technical field of all-position butt joint internal welding of pipelines, in particular to a repair welding method for all-position butt joint TIG internal welding of pipelines. Background technique [0002] Small nuclear power reactors, due to their high safety, small size, and multi-purpose features, can be used not only for power generation, but also for industrial heating and steam supply, seawater desalination, and ocean development, so they have been vigorously promoted in recent years. During the on-site hoisting of small reactors, due to the particularity of the limited peripheral space of the product structure, the inlet and outlet pipes of the pressure vessels of many nuclear power small reactors and the pipes of the molten salt heat exchangers are all-position butt TIG internal welding (that is, tungsten gas protection internal welding) process. During the welding process, due to the limitation of the internal w...

Claims

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Application Information

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IPC IPC(8): B23K9/167B23K9/32
CPCB23K9/167B23K9/32Y02E30/30
Inventor 费大奎张焱李荣靳彤安洪亮杨义成郭枭赵树全马一鸣曹永
Owner HARBIN WELDING INST LTD
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