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A kind of welding wire for submerged arc automatic welding in nuclear-level strong irradiation area

A flux, low-hydrogen technology, used in welding media, welding equipment, welding equipment, etc., can solve problems such as high cost, dependence on imported welding wire, and difficult cycle control.

Active Publication Date: 2016-10-19
TIANJIN HEAVY EQUIP ENG RES +1
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Problems solved by technology

[0006] In view of the above analysis, the present invention aims to provide a high-strength, high-toughness submerged arc automatic welding wire for strong irradiation areas of nuclear first-level equipment to solve the problems of existing welding wires relying on imports, high cost, and difficult to control the cycle

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  • A kind of welding wire for submerged arc automatic welding in nuclear-level strong irradiation area
  • A kind of welding wire for submerged arc automatic welding in nuclear-level strong irradiation area
  • A kind of welding wire for submerged arc automatic welding in nuclear-level strong irradiation area

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Embodiment Construction

[0031] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention.

[0032] The present invention is based on the research and invention based on the technical requirements for the manufacture of third-generation nuclear power equipment, and discloses the chemical composition of a submerged arc welding wire. , P≤0.010, S≤0.010, Mo 0.45~0.65, Ni 0.60~0.80, Cr≤0.10, Cu≤0.020, Co≤0.020, B≤0.0005, As≤0.005, Sn≤0.005, and the balance is Fe Avoid impurities. 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.

[0033] The assembly m...

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Abstract

The invention relates to a high-strength and high-tenacity automatic submerged arc welding wire used in a nuclear grade equipment strong radiation area. The automatic submerged arc welding wire comprises, by weight, 0.10-0.15% of C, 1.70-2.20% of Mn, 0.20% or less of Si, 0.010% or less of P, 0.010% or less of S, 0.45-0.65% of Mo, 0.60-0.80% of Ni, 0.10% or less of Cr, 0.020% or less of Cu, 0.020% or less of Co, 0.0005% or less of B, 0.010% or less of Nb, 0.005% or less of As, 0.005% or less of Sn and the balance Fe and inevitable impurities. The welding wire can be matched with high-alkalinity low-hydrogen type flux with alkalinity as high as 2.5-3.5 to meet the weld joint performance requirement of SA-508Gr.3Cl.1 low alloy steel during manufacturing of third-generation nuclear power equipment and other nuclear power equipment.

Description

technical field [0001] The invention relates to the technical field of nuclear power welding materials, in particular to a high-strength and high-toughness submerged arc automatic welding wire for strong irradiation areas of nuclear-level equipment. Background technique [0002] With the continuous growth of energy demand, energy issues have also become a bottleneck restricting the development of my country's economy, society and environment. Considering various factors such as the environment, the restart of nuclear power is impressively listed in the country's key work deployment in 2015. According to nuclear power equipment Manufacturing development trend, nuclear power in our country is bound to usher in a new stage of batch development and technological upgrading, and a new round of nuclear power construction climax is being set off. [0003] After more than 30 years of nuclear power development, China's nuclear power manufacturing system has been relatively complete. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/362B23K9/18
CPCB23K9/18B23K35/0261B23K35/3073B23K35/362
Inventor 张秀海余燕赵云志高蕊马志宝张帆刘学利王富铭
Owner TIANJIN HEAVY EQUIP ENG RES
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