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3ni-1.6cr-0.5mo nuclear power equipment steel supporting submerged arc welding wire

A kind of equipment, nuclear power technology, applied in welding equipment, metal processing equipment, welding medium and other directions, can solve the problem that welding materials are not easy to obtain

Active Publication Date: 2022-03-08
CFHI DALIAN HYDROGENANT REACTOR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the advanced nature and scientific frontier of SA508Gr.4N steel, it can meet the needs of nuclear container welding at home and abroad, and has high strength, high toughness, and good low temperature plasticity (RT NDT ≤-60℃) welding materials are not easy to obtain

Method used

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  • 3ni-1.6cr-0.5mo nuclear power equipment steel supporting submerged arc welding wire
  • 3ni-1.6cr-0.5mo nuclear power equipment steel supporting submerged arc welding wire

Examples

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Embodiment 1 and 2

[0020] Examples 1 and 2: According to the chemical composition of the welding wire in the present invention, two batches of welding wire steel were refined, the chemical composition of which is shown in Table 1, and drawn into φ4 submerged arc welding wire after annealing. Then apply the research and development welding wire and the nuclear-grade high-alkalinity low-hydrogen flux TYF-13HR for matching welding. The mechanical properties of the deposited metal are shown in Table 2 and Table 3.

[0021] Table 1 embodiment 1 and 2 welding wire chemical composition;

[0022] Numbering C Si mn P S Cr Ni co Fe Example 1 0.10 0.12 1.60 ﹤0.005 0.002 1.65 3..69 ﹤0.01 margin Example 2 0.11 0.14 1.58 0.005 0.002 1.72 3.73 ﹤0.01 margin

[0023] Table 2 embodiment 1 and 2 weld metal properties;

[0024]

[0025] Table 3 Weld metal properties of Examples 1 and 2.

[0026]

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Abstract

The invention discloses a 3Ni-1.6Cr-0.5Mo nuclear power equipment steel supporting submerged arc welding welding wire, its constituent elements and mass percentages include: C: 0.10-0.15%, Mn: 1.58-2.00%, Si≤0.20 %, P≤0.005%, S≤0.005%, Mo:0.45‑0.65%, Ni:3.00‑3.90%, Cr:1.50‑1.90%, Cu≤0.020%, Co≤0.020%, B≤0.0005%, Nb≤ 0.010%, As ≤ 0.005%, Sn ≤ 0.005%, the balance is Fe, matching the self-developed flux, meeting the welding requirements of SA508Gr.4N steel and its improved steel, and can greatly improve welding efficiency and welding quality.

Description

technical field [0001] The invention relates to the field of nuclear power welding materials, in particular to a high-strength and high-toughness 3Ni-1.6Cr-0.5Mo steel submerged arc automatic welding wire for nuclear first-level equipment. Background technique [0002] With the further increase of electricity demand and the increasing pressure of energy conservation and emission reduction, nuclear power has become a relatively mature clean energy. A development trend of nuclear power technology and construction planning is to continuously increase the capacity of a single reactor. The increase in the capacity of a single reactor will inevitably lead to the enlargement of reactor pressure vessels and evaporator tube sheets. Nuclear reactor pressure vessels and evaporator tube sheets are used The weight and thickness of forgings are increasing. At present, the general steel for nuclear reactor pressure vessels in various countries is SA508-3 steel of 620MPa grade. With the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30
CPCB23K35/3066
Inventor 张秀海高蕊王富铭刘学利段莉蕾李兆峰
Owner CFHI DALIAN HYDROGENANT REACTOR
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