A tig welding method for improving welding penetration and preventing back oxidation

A back and penetration technology, applied in the direction of welding equipment, welding medium, welding equipment, etc., can solve the problems of low welding efficiency, back oxidation, insufficient penetration, etc., to improve welding efficiency, prevent back oxidation, and form a good back Effect

Active Publication Date: 2021-08-06
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a TIG welding method that improves welding penetration and prevents back oxidation, and solves insufficient penetration, incomplete penetration, low welding efficiency and back oxidation in the TIG welding process. , porosity, inclusions, weld bumps and other issues

Method used

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  • A tig welding method for improving welding penetration and preventing back oxidation
  • A tig welding method for improving welding penetration and preventing back oxidation
  • A tig welding method for improving welding penetration and preventing back oxidation

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Weigh the powder according to the following mass percentages: SiO2 22%, CaF2 5%, TiO2 28%, MnO2 5%, Mn 22%, Si18%. After mixing the powder evenly, mix it with the binder at a ratio of 1:4 to 6 to form a protective agent, then dilute the protective agent with acetone at a ratio of 1.5 to 3:1, and coat the front with a thickness of 0.1mm and the back with a thickness of 2mm, put it in the air for 5-10 minutes, and then weld.

Embodiment 2

[0032] Weigh the powder according to the following mass percentages: SiO2 22%, CaF2 5%, TiO2 25%, MnO2 4%, Mn 26%, Si18%. After mixing the powder evenly, mix it with the binder at a ratio of 1:4 to 6 to form a protective agent, then dilute the protective agent with acetone at a ratio of 1.5 to 3:1, and coat the front with a thickness of 0.1mm and the back with a thickness of 2mm, put it in the air for 5-10 minutes, and then weld.

Embodiment 3

[0034] Weigh the powder according to the following mass percentages: SiO2 22%, CaF2 5%, TiO2 25%, MnO2 4%, Mn 24%, Si20%. After mixing the powder evenly, mix it with the binder at a ratio of 1:4 to 6 to form a protective agent, then dilute the protective agent with acetone at a ratio of 1.5 to 3:1, and coat the front with a thickness of 0.1mm and the back with a thickness of 2mm, put it in the air for 5-10 minutes, and then weld.

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Abstract

A TIG welding method that improves welding penetration and prevents back oxidation. The invention can greatly increase TIG welding penetration, prevent weld back oxidation, improve weld slag inclusions, pores, weld penetration and other forming defects, and achieve 5-10mm medium Thick stainless steel is welded and formed at one time. The method saves the cumbersome multi-layer welding process, shortens the production cycle, reduces energy consumption, saves cost, and greatly improves the forming quality of TIG primary welding.

Description

technical field [0001] The invention belongs to the technical field of metal welding, and relates to a welding method suitable for stainless steel and other high-alloy steels, in particular to a TIG welding method for improving welding penetration and preventing back oxidation. Background technique [0002] The TIG welding head is of excellent quality and is suitable for welding almost all metals and alloys such as stainless steel, superalloy, titanium alloy, etc. However, it also has some disadvantages. When performing single-side welding and double-side forming of pipe fittings, insufficient penetration and low welding efficiency have become prominent problems. In addition, in certain application scenarios such as small-diameter pipe welding that must use one-sided welding and double-sided forming, the problem of high-temperature oxidation on the reverse side of the welded joint is very prominent, which will seriously affect the mechanical properties and corrosion resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/36B23K9/167
CPCB23K9/167B23K35/3607
Inventor 邢晓芳强伟周勇杨永春李霄路永新
Owner XI'AN PETROLEUM UNIVERSITY
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