Gas protection welding wire for nuclear power steel containment vessel

A gas shielded welding wire and containment technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of the impact of the third-generation nuclear power plant project progress, different welding quality, high cost, etc., and achieve the welding process. Good performance and physical and chemical properties, small splash, beautiful molding effect

Active Publication Date: 2014-11-05
ATLANTIC CHINA WELDING CONSUMABLES +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the steel containment vessels used in the third-generation nuclear power plants are mainly made of SA738Gr.B steel and other materials, but there is currently no welding wire specifically for this type of steel, and only other types of welding wire can be used for welding. The disadvantages of high cost and uneven welding quality have affected the progress of the third-generation nuclear power plant project to a certain extent.

Method used

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  • Gas protection welding wire for nuclear power steel containment vessel
  • Gas protection welding wire for nuclear power steel containment vessel
  • Gas protection welding wire for nuclear power steel containment vessel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The gas-shielded welding wire used for nuclear power steel containment is characterized in that the chemical composition is:

[0038] C: 0.081%

[0039] Mn: 1.54%

[0040] Si: 0.44%

[0041] Ni: 1.02%;

[0042] S: 0.003%;

[0043] P: 0.005%;

[0044] Cr: 0.045%;

[0045] Mo: 0.14%;

[0046] Cu: 0.11%;

[0047] The remainder is iron and unavoidable impurities.

[0048] The welding wire obtained in this embodiment is made of 80%Ar+20%CO 2 Shielding gas, using DC reverse connection for welding test, stable arc, small spatter, beautiful weld shape.

[0049] The chemical composition of the deposited metal of the welding wire is shown in Table 1, and the mechanical properties of the deposited metal are shown in Table 2.

[0050]

[0051]

Embodiment 2

[0053] The gas-shielded welding wire used for nuclear power steel containment is characterized in that the chemical composition is:

[0054] C: 0.085%

[0055] Mn: 1.49%

[0056] Si: 0.40%

[0057] Ni: 0.98%;

[0058] S: 0.004%;

[0059] P: 0.005%;

[0060] Cr: 0.05%;

[0061] Mo: 0.14%;

[0062] Cu: 0.12%;

[0063] The remainder is iron and unavoidable impurities.

[0064] The welding wire obtained in this embodiment is made of 80%Ar+20%CO 2 Shielding gas, using DC reverse connection for welding test, stable arc, small spatter, beautiful weld shape.

[0065] The chemical composition of the deposited metal of the welding wire is shown in Table 3, and the mechanical properties of the deposited metal are shown in Table 4.

[0066]

[0067]

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Abstract

The invention provides a gas protection welding wire for a nuclear power steel containment vessel and belongs to the field of welding materials. The gas protection welding wire comprises, by mass, 0.07%-0.12% of C, 1.10%-1.60% of Mn, 0.25%-0.55% of Si, 0.80%-1.40% of Ni, at most 0.025% of S, at most 0.025% of P, at most 0.20% of Cr, 0.10%-0.30% of Mo, at most 0.50% of Cu, and the balance iron and inevitable impurities. The gas protection welding wire is low in cost, welding arcs are stable, welding spatter is slight, welding seams are formed neatly, obtained deposited metal and welded joints are high in comprehensive mechanical performance in the welded condition, low-temperature impact performance is high, and tenacity is extremely high. The gas protection welding wire can be widely applied to steel structure welding in nuclear power engineering.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a gas-shielded welding wire used for nuclear power steel containment shells. Background technique [0002] As a clean energy, nuclear power is of great strategic significance to meet China's electricity demand, optimize energy structure, reduce environmental pollution, and promote sustainable economic and energy development. [0003] Nuclear power, as a new type of alternative energy that is currently economical and effective and has been truly commercialized, has no doubts about its development potential. At this stage, my country is in the trend of mass application of clean energy such as nuclear power, and nuclear power projects will be the focus of my country's future clean energy development. [0004] The third-generation nuclear power plant currently under construction in our country has absorbed the operational experience of the second-generation nuclear power technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
CPCB23K35/3073B23K35/383B23K35/40
Inventor 吴平张毅张俊宝蒋勇张效宁宋波余燕包朝安景益
Owner ATLANTIC CHINA WELDING CONSUMABLES
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