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Carbon steel A-TIG welding active agent and welding method

A welding method and activating agent technology, applied in welding medium, welding equipment, welding equipment and other directions, can solve the problems of limited power density, low deposition efficiency, shallow welding penetration, etc., to ensure forming quality, improve welding efficiency and welding. Quality, good weld bead penetration effect

Active Publication Date: 2018-06-15
CHINA NUCLEAR IND 23 CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous improvement of welding requirements, this welding method also has certain limitations.
For example, due to the limited current bearing capacity of tungsten, the arc energy density is reduced, and its power density is limited, resulting in low deposition efficiency, shallow welding penetration and low production efficiency.

Method used

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  • Carbon steel A-TIG welding active agent and welding method
  • Carbon steel A-TIG welding active agent and welding method
  • Carbon steel A-TIG welding active agent and welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The activator of the present invention is used to carry out A-TIG welding to a Q245R carbon steel plate with a thickness of 6 mm. Among them, the active agent powder is composed of SiO with a mass percentage of 30% 2 Powder, 30% Cr 2 o 3 Powder, 10% Al 2 o 3 Powder, 10% TiO 2 powder, 10% MnO 2 powder, 5% Y 2 o 3 powder and 5% B 2 o 3 Powder composition. WSM-315D full-digital DC pulse argon arc welding machine is used for welding operation. The main welding parameters are: welding current value is 110A~130A, welding voltage value is 10V~14V, welding speed is 2~5m / h, welding torch inclination angle is 70°~80°, the protective gas is argon, and the gas flow rate is 10~20L / min.

[0041] eventually get asfigure 1 Frontal photographs of welds shown and as figure 2 The photo of the back of the weld shown, and the mechanical tensile test was carried out on the welded carbon steel plate, and the test results shown in Table 1 were obtained.

[0042] Table 1

[0043]...

Embodiment 2

[0045] Adopt the same method as embodiment 1 to carry out A-TIG welding to the Q245R carbon steel plate that thickness is 6mm, and its difference is only that, activator powder is made of 30% SiO by mass percentage 2 Powder, 30% Cr 2 o 3 Powder, 10% Al 2 o 3 Powder, 8% TiO 2 Powder, 7% MnO 2 Powder, 10% Y 2 o 3 powder and 5% B 2 o 3 Powder composition.

[0046] eventually get as image 3 Frontal photographs of welds shown and as Figure 4 The photo of the back of the weld is shown, and the mechanical tensile test is carried out on the welded carbon steel plate, and the test results shown in Table 2 are obtained.

[0047] Table 2

[0048]

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Abstract

The invention belongs to the technical field of carbon steel welding, particularly relates to a carbon steel A-TIG welding active agent and a welding method and discloses an active agent special for A-TIG welding of carbon steel. The carbon steel A-TIG welding active agent comprises active agent powder. The active agent powder comprises, by mass, 30%-50% of SiO2 powder, 20%-40% of Cr2O3 powder, 10%-30% of Al2O3 powder, 5%-10% of TiO2 powder, 10%-30% of MnO2 powder, 5%-10% of Y2O3 powder and 2%-10% of B2O3 powder. When the active agent is adopted to conduct A-TIG welding of the carbon steel, single-face welding double-face formation of the carbon steel can be achieved, welding efficiency is improved and the welding quality can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of carbon steel welding, and in particular relates to a carbon steel A-TIG welding activator and a welding method. Background technique [0002] Because the traditional TIG welding, that is, non-melting inert gas tungsten shielded welding, has the advantages of high welding quality, stable welding process, many materials suitable for welding, strong reliability, and the weld metal is not easy to deteriorate, so it is widely used. However, with the continuous improvement of welding requirements, this welding method also has certain limitations. For example, due to the limited current bearing capacity of the tungsten electrode, the arc energy density is reduced and its power density is limited, resulting in low deposition efficiency, shallow welding penetration and low production efficiency. [0003] In recent years, a new type of A-TIG welding has attracted widespread attention. A-TIG welding means that a t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362B23K9/167B23K103/04B23K101/18
CPCB23K9/167B23K35/3602B23K35/362
Inventor 冯英超查泽火任丽丽扈晓刚侯彦文
Owner CHINA NUCLEAR IND 23 CONSTR
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