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Duplex stainless steel electric welding rod for third generation nuclear power equipment and production method thereof

A technology of duplex stainless steel and welding electrodes, applied in welding equipment, metal processing equipment, welding media, etc., can solve problems such as obstacles, constraints, and huge procurement costs

Active Publication Date: 2016-06-08
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 S32101 duplex stainless steel materials. If they could not manufacture independently, not only would they have to pay huge procurement costs, but it also meant that my country’s nuclear power development would be controlled by others. The third-generation nuclear power AP1000 self-independence process It will also be hindered, which seriously restricts the implementation of the national nuclear power construction plan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] The welding core composition is (wt%): C: 0.010%, Mn: 1.50%, Si: 0.10%, Cr: 22.82%, Ni: 8.91%, Mo: 3.13%, Co: 0.011%, Cu: 0.018%, N: 0.12%, S: 0.006%, P: 0.012%, 100 kg of chromium-nickel-molybdenum-nitrogen alloy welding core with Fe and impurities as the balance.

[0131] Get the drug skin, the weight of each component in the drug skin is as follows: Containing CaCO 3 ≥50%, MgCO3≥40% dolomite 4.0kg; containing CaF 297.0% Fluorite 3.0kg; Contains SiO 2 63.7%, Al 2 o 3 17.2%, K 2 O+Na 2 O16.2% feldspar powder 8.0kg; containing TiO 2 96.2% natural rutile 14.0kg; containing SiO 2 47.03%, Al 2 o 3 23.40%, K 2 O+Na 2 O11.20% mica 2.0kg; Cr99.13% metal chromium 3.0kg; Ni99.81% nickel powder 1.5kg; Mn99.63% electrolytic manganese 3.0kg; Mo56.35% ferromolybdenum 1.0kg; ferrochromium nitride containing Cr62.15%, N5.23% 1.0kg; containing Na 2 Cl0.52% soda ash 0.5kg.

[0132] After mixing the above powder evenly, add 7.3 kg of potassium sodium water glass with a con...

Embodiment 2

[0137] This embodiment is the same as that of Embodiment 1 except that the weight of each component in the drug skin and the baking process are different.

[0138] In the present embodiment, the weight of each component in the medicine skin is as follows: Containing CaCO 3 ≥50%, MgCO3≥40% dolomite 3.0kg; containing CaF 2 97.0% Fluorite 4.0kg; Contains SiO 2 63.7%, Al 2 o 3 17.2%, K 2 O+Na 2 O16.2% feldspar powder 5.0kg; containing TiO 2 96.2% natural rutile 20.0kg; containing SiO 2 47.03%, Al 2 o 3 23.40%, K 2 O+Na 2 O11.20% mica 2.0kg; Cr99.13% chromium metal 3.2kg; Ni99.81% nickel powder 1.5kg; Mn99.63% electrolytic manganese 3.5kg; Mo56.35% ferromolybdenum 1.2kg; ferrochromium nitride containing Cr62.15%, N5.23% 1.0kg; containing Na 2 Cl0.52% soda ash 0.5kg.

[0139] After mixing the above powder evenly, add 8.1 kg of potassium sodium water glass with a concentration of 38°Be'~45°Be' and a modulus below 3.1 and mix evenly, then send it into the plodder and wrap...

Embodiment 3

[0144] This embodiment is the same as that of Embodiment 1 except that the weight of each component in the drug skin and the baking process are different.

[0145] In the present embodiment, the weight of each component in the medicine skin is as follows: Containing CaCO 3 ≥50%, MgCO3≥40% dolomite 6.0kg; containing CaF 2 97.0% Fluorite 2.0kg; Contains SiO 2 63.7%, Al 2 o 3 17.2%, K 2 O+Na 2 O16.2% feldspar powder 10.0kg; containing TiO 2 96.2% natural rutile 15.0kg; containing SiO 2 47.03%, Al 2 o 3 23.40%, K 2 O+Na 2 O11.20% mica 1.5kg; Cr99.13% chromium metal 3.6kg; Ni99.81% nickel powder 1.5kg; Mn99.63% electrolytic manganese 2.5kg; Mo56.35% ferromolybdenum 1.0kg; ferrochromium nitride containing Cr62.15%, N5.23% 1.0kg; containing Na 2 Cl0.52% soda ash 0.5kg.

[0146] After mixing the above powder evenly, add 8.92 kg of potassium sodium water glass with a concentration of 38°Be'~45°Be' and a modulus below 3.1 and mix evenly, then send it into the plodder and wr...

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Abstract

The invention discloses a duplex stainless steel welding electrode for third-generation nuclear power equipment and a duplex stainless steel welding electrode production method. The welding electrode consists of a nickel-chrome-molybdenum-nitrogen alloy core wire and a coating covering the surface of the core wire. The nickel-chrome-molybdenum-nitrogen alloy core wire is made of C, Mn, Si, Cr, Ni, Mo, N, Co, Cu, S, P and the balance Fe and impurities. The production method includes the steps: uniformly mixing coating powder, adding a binding agent with the weight 16-20% of that of the coating powder, mixing uniformly, feeding into a plodder, coating the mixture onto the core wire, and carrying out low-temperature, middle-temperature and high-temperature roasting. The S32101 duplex stainless steel welding electrode meets E2209-16 requirements in AP1000 standard and ASME standard and is mainly used for welding third-generation nuclear power modules.

Description

technical field [0001] The invention relates to an electric welding electrode, in particular to an electric welding electrode mainly used for welding S32101 duplex stainless steel materials for third-generation nuclear power modules, which meets the requirements of AP1000 standard and E2209-16 in ASME standard, and its production method. Background technique [0002] The third-generation AP1000 duplex stainless steel container for nuclear power modules is the most advanced duplex stainless steel container for nuclear power plant modules in the world today, and it is the necessary equipment for the construction of third-generation nuclear power plants. Previously, the AP1000 nuclear power technology successfully developed by Westinghouse Corporation of the United States was recognized as the third-generation nuclear power technology with the best security and the most advanced technology in the world. At present, Chinese enterprises have mastered the core technology of manufa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/365B23K35/368
CPCB23K35/3086B23K35/3601B23K35/40
Inventor 袁宁景益刘奇望丛大志蒋勇张俊宝简仁露余燕
Owner ATLANTIC CHINA WELDING CONSUMABLES
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