Stainless-steel gas shielded welding wire for third-generation nuclear main pipelines

A main pipe and stainless steel technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of dependence on imports and restrictions, and achieve the effects of small welding spatter, improved safety, and high plasticity

Inactive Publication Date: 2014-12-03
ATLANTIC CHINA WELDING CONSUMABLES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previously, my country relied entirely on imports of supporting welding materials for nuclear-grade 316LN main pipeline materials, which seriously restricted the implementation of the national nuclear power construction plan.

Method used

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  • Stainless-steel gas shielded welding wire for third-generation nuclear main pipelines
  • Stainless-steel gas shielded welding wire for third-generation nuclear main pipelines
  • Stainless-steel gas shielded welding wire for third-generation nuclear main pipelines

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] According to the requirements of the present invention, the welding wire composition and weight percentage content are designed as follows: C 0.013%, Mn 1.29%, Si 0.35%, Cr 18.8%, Ni 11.4%, Mo 2.32%, Co 0.007%, Cu 0.005%, S 0.004%, P 0.006%, N 0.025%, and the balance is Fe and impurities.

[0065] The welding wire can be produced according to the conventional gas shielded welding wire production process.

[0066] The obtained stainless steel gas-shielded welding wire 1 of the nuclear power main pipeline was subjected to an ultra-low carbon 022Cr19Ni10 stainless steel welding experiment, and the deposited metal ferrite number FN was measured by the NB-2433 magnetic method: 9.7; according to the standards of AWS B4.0M and ASTM E21 The mechanical performance test was carried out, and the mechanical performance of the deposited metal at normal temperature in the welded state is shown in Table 2

[0067] Table 2 Mechanical properties of deposited metal

[0068]

[0069]...

Embodiment 2

[0072] According to the requirements of the present invention, the welding wire composition and weight percentage content are designed as follows: C 0.019%, Mn 1.58%, Si 0.49%, Cr19.3%, Ni 12.6%, Mo 2.57%, Co 0.018%, Cu 0.014%, S 0.006%, P 0.009%, N 0.036%, and the balance is Fe and impurities.

[0073] The welding wire can be produced according to the conventional gas shielded welding wire production process.

[0074] The obtained stainless steel gas-shielded welding wire 2 of the nuclear power main pipeline was subjected to an ultra-low carbon 022Cr19Ni10 stainless steel welding experiment, and the deposited metal ferrite number FN was measured by the NB-2433 magnetic method: 8.8; according to the standards of AWS B4.0M and ASTM E21 The mechanical properties were tested, and the mechanical properties of the deposited metal at normal temperature in the welded state are shown in Table 3

[0075] Table 3 Mechanical properties of deposited metal

[0076]

[0077] The metall...

Embodiment 3

[0080] According to the requirements of the present invention, the welding wire composition and weight percentage content are designed as follows: C 0.025%, Mn 1.81%, Si 0.58%, Cr19.8%, Ni 13.4%, Mo 2.77%, Co 0.034%, Cu 0.062%, S 0.008%, P 0.012%, N 0.045%, and the balance is Fe and impurities.

[0081] The welding wire can be produced according to the conventional gas shielded welding wire production process.

[0082] The obtained stainless steel gas-shielded welding wire 2 of the nuclear power main pipeline was subjected to an ultra-low carbon 022Cr19Ni10 stainless steel welding experiment, and the deposited metal ferrite number FN was measured by the NB-2433 magnetic method: 9.2; according to the standards of AWS B4.0M and ASTM E21 The mechanical properties were tested, and the mechanical properties of the deposited metal at normal temperature in the welded state are shown in Table 4

[0083] Table 3 Mechanical properties of deposited metal

[0084]

[0085] The metall...

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Abstract

The invention discloses a stainless-steel gas shielded welding wire for third-generation nuclear main pipelines and relates to a welding wire. The welding wire is made of components including, by weight, 0.010-0.030wt% of C, 1.00-2.00wt% of Mn, 0.30-0.65wt% of Si, less than or equal to 0.025wt% of P, less than or equal to 0.010wt% of S, 2.20-3.00wt% of Mo, less than or equal to 0.10wt% of Cu, 18.5-20.0wt% of Cr, 11.0-14.0wt% of Ni, less than or equal to 0.050wt% of Co, 0.020-0.070wt% of N and balance of Fe and impurities. The stainless-steel gas shielded welding wire assorted with E316LN materials of the third-generation nuclear main pipelines takes the place of nuclear power to produce imported products, and localized independent research and development are realized.

Description

technical field [0001] The invention relates to a welding wire, in particular to a stainless steel gas-shielded welding wire mainly used for welding the main pipeline of the third-generation nuclear power plant of the nuclear power plant with high requirements for corrosion resistance and high temperature resistance and durable strength, which meets the requirements of AP1000 standard and ER316L in the ASME standard. Background technique [0002] Energy is the basic industry of the national economy and an important link that restricts the sustainable development of my country's economy. Nuclear power is a safe, clean and efficient energy source. The development of nuclear power is of great strategic significance for my country to meet power demand, optimize energy structure, ensure energy security, and promote sustainable economic development. However, due to the particularity of the service conditions of nuclear power equipment, higher requirements are placed on the raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/24
CPCB23K35/308B23K35/0261
Inventor 杨强余燕蒋勇左波郑海景益陈维富丛大志
Owner ATLANTIC CHINA WELDING CONSUMABLES
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