CN104128715A - Gas protection welding wire for nuclear power steel containment vessel - Google Patents
Gas protection welding wire for nuclear power steel containment vessel Download PDFInfo
- Publication number
- CN104128715A CN104128715A CN201410380865.5A CN201410380865A CN104128715A CN 104128715 A CN104128715 A CN 104128715A CN 201410380865 A CN201410380865 A CN 201410380865A CN 104128715 A CN104128715 A CN 104128715A
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- China
- Prior art keywords
- welding wire
- nuclear power
- welding
- gas protection
- gas
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
- B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
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
The invention belongs to field of welding material, be specifically related to a kind of gas protecting welding wire for nuclear power metal containment.
Background technology
Nuclear power is as a kind of clean energy resource, for meeting China Power demand, Optimization of Energy Structure, minimizing environmental pollution, promoting economical energy resources sustainable development to have its own strategic significance.
Nuclear power as current economical and effective and by really realized commercialization utilize novel alternative energy source, its development potentiality not accommodating doubt.In the present stage trend widely applied in the clean energy resource such as nuclear power of China, nuclear power projects will be the emphasis of China's clean energy resource development from now on.
The generation Ⅲ nuclear power station that China is building now, drawn technically in the world two generation nuclear power technology operating experience, fully use Sci-tech Research Achievements in decades, according to new security legislation design, using major accident as design basis, therefore metal containment need to reach a new height to the load capacity of major accident, has just proposed new requirement for the welding standard of metal containment.
The steel containment vessel using in three generations nuclear power plant is at present mainly the materials such as SA738Gr.B steel, but the welding wire not using for these class steel specially at present, can only use the welding wire of other kind to weld, have with high costs, the not first-class shortcoming of welding quality, makes three generations's nuclear power plant project progress be subject to impact to a certain extent.The today developing rapidly at nuclear power technology, from Nuclear Safety angle, the airtight welding of metal containment just seems particularly important, is therefore badly in need of a kind of welding wire for the welding of three generations's nuclear power metal containment of exploitation.
Summary of the invention
The object of invention is to provide a kind of gas protecting welding wire for nuclear power metal containment; cost is low, welding arc stablility; spatter is little; appearance of weld is attractive in appearance; especially welding wire deposited metal composition and SA738Gr.B steel plate composition approach; both are consistent in as-welded and mechanical property heat treatment state, meet the requirement of SA738Gr.B steel welding performance completely.
For realizing the object of the invention, the technical solution used in the present invention is as follows:
A gas protecting welding wire for nuclear power with metal containment, is characterized in that chemical composition is by mass percentage:
C：0.07~0.12%；
Mn：1.10~1.60%；
Si：0.25~0.55%；
Ni：0.80~1.40%；
S≤0.025%；
P≤0.025%；
Cr≤0.20%；
Mo：0.10~0.30%；
Cu≤0.50%；
All the other compositions are iron and inevitable impurity.
The content of described copper comprises the copper that is plated in welding wire surface.
Preferably, described gas protecting welding wire adopts Ar and CO in the time of welding
2mixed gas protected, the volume ratio of described mist is Ar:CO
2=4:1.
The function and mechanism of each element in the present invention:
C: in the time that C content is lower, weld strength is lower; In the time of C too high levels, welding seam toughness decline, therefore in this welding wire the percentage by weight of C taking 0.07 ~ 0.12% as good.
Mn: be the effective element of weld seam Strengthening and Toughening, in the time of gas shielded welding, be conducive to deoxidation, prevent the formation of the iron sulfide that causes fire check, therefore in this welding wire the percentage by weight of Mn taking 1.10 ~ 1.60% as good.
Si: have on the one hand deoxidation, also butt welding is sewed with invigoration effect on the other hand, but can affect the toughness of weld seam when Si content is too high in weld seam, reduces the cracking resistance of weld seam, therefore in this welding wire the percentage by weight of Si taking 0.25 ~ 0.55% as good.
Ni: the especially low-temperature impact toughness of toughness that is conducive to improve weld metal, reduce brittle transition temperature, Ni can reduce proeutectoid ferrite body burden and improve welding seam toughness, Ni too high levels can cause weld seam and mother metal composition difference large, simultaneously welding wire cost increases, therefore in this welding wire the percentage by weight of Ni taking 0.80 ~ 1.40% as good.
S, P harmful element, can produce some adverse effects to processing characteristics, mainly can reduce ductility and the toughness of steel, in the time of forging and rolling, causes crackle, also can reduce the decay resistance of steel.Therefore these elements must be controlled in minimum zone as far as possible.In this welding wire, the percentage by weight control of S, P is S≤0.025%, P≤0.025%.
Cr: be a kind of effectively intensified element, and have the effect of refinement ferrite crystal grain, but too high Cr can reduce the toughness of weld seam, therefore in this welding wire, the percentage by weight control of Cr is Cr≤0.20%.
Mo: be a kind of effectively intensified element, and have the effect of refinement ferrite crystal grain, improve weld seam heat treatment performance, but too high Mo can reduce the toughness of weld seam, therefore in this welding wire the percentage by weight of Mo taking 0.10 ~ 0.30% as good.
The invention provides a kind of gas protecting welding wire for nuclear power metal containment, beneficial effect is as follows:
One, the gas protecting welding wire of using metal containment for nuclear power provided by the invention; be optimized for Common Steels containment materials such as SA738Gr.B steel; gained deposited metal and welding point have good comprehensive mechanical property under as-welded, and low temperature impact properties is good, have splendid toughness.The present invention, in the situation that reducing gas protecting welding wire preparation cost, can be widely used in the during welding for steel structure in nuclear power engineering.
Two, the gas protecting welding wire of using metal containment for nuclear power provided by the invention; show through test of many times, welding technological properties and physicochemical property are good, in technique, reach moulding attractive in appearance, splash little; arc stiffness is good, deposition efficiency is high, can carry out all-position welding.
Three, the gas protecting welding wire of using metal containment for nuclear power provided by the invention, connects as-welded and heat treatment state deposited metal room temperature tensile R in all position welding
p0.2be greater than 540MPa, R
mbe greater than 620MPa, 200 DEG C of high temperature R
p0.2be greater than 360MPa, R
mbe greater than 525MPa; Akv(-30 DEG C under as-welded and heat-treat condition), Akv(-45 DEG C) be greater than 54J; percentage elongation is greater than respectively 20%; effectively improve weld seam overall performance; solve the problem of weld metal low-temperature flexibility deficiency; the demand to gas protecting welding wire in nuclear power work can be met, the during welding for steel structure in nuclear power engineering can be widely used in.
Four, the gas protecting welding wire of using metal containment for nuclear power provided by the invention, has ultralow S, P content (S, P total amount are less than 0.025) in the deposited metal after welding, reduces the possibility of welding wire deposited metal generation solidification cracking.
Five, gas protecting welding wire of the present invention adopts argon-rich gas (Ar80%+CO in the time of welding
220%) protection, is conducive to the stable of weld seam low-temperature impact toughness.
Detailed description of the invention
A gas protecting welding wire for nuclear power with metal containment, welding wire preparation comprises the following steps: formulate welding wire smelting composition range, carry out raw material smelting; Raw material are peeled off, pickling pre-treatment; By the material after pre-treatment in accordance with regulations compression ratio pull to regulatory specifications semi-finished product; Semi-finished product welding wire carries out compressing polishing after electroless copper after pre-treatment; Divide and be rolled into independent packaging.
Embodiment 1
Gas protecting welding wire for nuclear power with metal containment, is characterized in that chemical composition is by mass percentage:
C：0.081%
Mn：1.54%
Si：0.44%
Ni：1.02%；
S：0.003%；
P：0.005%；
Cr：0.045%；
Mo：0.14%；
Cu：0.11%；
All the other compositions are iron and inevitable impurity.
The welding wire of the present embodiment gained is adopted to 80%Ar+20%CO
2protective gas, adopt DC reverse connection carry out soldering test, arc stability, splash little, appearance of weld is attractive in appearance.
Welding wire deposited metal composition is in table 1, and deposited metal mechanical property is in table 2.
Embodiment 2
Gas protecting welding wire for nuclear power with metal containment, is characterized in that chemical composition is by mass percentage:
C：0.085%
Mn：1.49%
Si：0.40%
Ni：0.98%；
S：0.004%；
P：0.005%；
Cr：0.05%；
Mo：0.14%；
Cu：0.12%；
All the other compositions are iron and inevitable impurity.
The welding wire of the present embodiment gained is adopted to 80%Ar+20%CO
2protective gas, adopt DC reverse connection carry out soldering test, arc stability, splash little, appearance of weld is attractive in appearance.
Welding wire deposited metal composition is in table 3, and deposited metal mechanical property is in table 4.
Above embodiment will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to one skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Claims (3)
1. the gas protecting welding wire with metal containment for nuclear power, is characterized in that chemical composition is by mass percentage:
C：0.07~0.12%；
Mn：1.10~1.60%；
Si：0.25~0.55%；
Ni：0.80~1.40%；
S≤0.025%；
P≤0.025%；
Cr≤0.20%；
Mo：0.10~0.30%；
Cu≤0.50%；
All the other compositions are iron and inevitable impurity.
2. the gas protecting welding wire of using metal containment for nuclear power according to claim 1, is characterized in that: the content of described copper comprises the copper that is plated in welding wire surface.
3. the gas protecting welding wire of using metal containment for nuclear power according to claim 1, is characterized in that: described gas protecting welding wire adopts Ar and CO in the time of welding
2mixed gas protected, the volume ratio of described mist is Ar:CO
2=4:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380865.5A CN104128715B (en) | 2014-08-05 | 2014-08-05 | A kind of gas protecting welding wire for midium-carbon steel containment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380865.5A CN104128715B (en) | 2014-08-05 | 2014-08-05 | A kind of gas protecting welding wire for midium-carbon steel containment |
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| Publication Number | Publication Date |
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| CN104128715A true CN104128715A (en) | 2014-11-05 |
| CN104128715B CN104128715B (en) | 2016-08-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271205A (en) * | 2016-08-31 | 2017-01-04 | 北京国电富通科技发展有限责任公司 | A kind of alloy welding wire |
| CN106378548A (en) * | 2016-11-25 | 2017-02-08 | 上海大西洋焊接材料有限责任公司 | Gas protection welding wire for automatic welding of Q370R spherical tank |
| CN106425159A (en) * | 2016-11-25 | 2017-02-22 | 上海大西洋焊接材料有限责任公司 | Gas shielded welding wire for automatic welding of 07MnMoVR spherical tank |
| CN108941975A (en) * | 2018-09-18 | 2018-12-07 | 天津市永昌焊丝有限公司 | A kind of nuclear power manganese nickel molybdenum low-alloy high-strength steel high tenacity gas tungstun arc welding silk |
| CN109093285A (en) * | 2018-09-13 | 2018-12-28 | 上海大西洋焊接材料有限责任公司 | One kind being used for Q345R spherical tank automatic welding gas protecting welding wire |
| CN112496595A (en) * | 2020-12-29 | 2021-03-16 | 中国电建集团上海能源装备有限公司 | Gas shielded welding wire for nuclear power containment vessel and preparation and application thereof |
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| CN103659047A (en) * | 2013-11-29 | 2014-03-26 | 四川大西洋焊接材料股份有限公司 | Gas shielded welding wire for nuclear power heavy support frame |
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| JPS61115694A (en) * | 1984-11-09 | 1986-06-03 | Kawasaki Steel Corp | Submerged arc welding method of high tensile steel |
| JPS6284895A (en) * | 1985-10-09 | 1987-04-18 | Kawasaki Steel Corp | Wire for mig arc welding for steel products for nuclear reactor and its production |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271205A (en) * | 2016-08-31 | 2017-01-04 | 北京国电富通科技发展有限责任公司 | A kind of alloy welding wire |
| CN106271205B (en) * | 2016-08-31 | 2019-10-22 | 北京国电富通科技发展有限责任公司 | A kind of alloy welding wire |
| CN106378548A (en) * | 2016-11-25 | 2017-02-08 | 上海大西洋焊接材料有限责任公司 | Gas protection welding wire for automatic welding of Q370R spherical tank |
| CN106425159A (en) * | 2016-11-25 | 2017-02-22 | 上海大西洋焊接材料有限责任公司 | Gas shielded welding wire for automatic welding of 07MnMoVR spherical tank |
| CN109093285A (en) * | 2018-09-13 | 2018-12-28 | 上海大西洋焊接材料有限责任公司 | One kind being used for Q345R spherical tank automatic welding gas protecting welding wire |
| CN108941975A (en) * | 2018-09-18 | 2018-12-07 | 天津市永昌焊丝有限公司 | A kind of nuclear power manganese nickel molybdenum low-alloy high-strength steel high tenacity gas tungstun arc welding silk |
| CN108941975B (en) * | 2018-09-18 | 2021-03-16 | 天津市永昌焊丝有限公司 | High-toughness tungsten electrode gas protection welding wire for nuclear power manganese-nickel-molybdenum low-alloy high-strength steel |
| CN112496595A (en) * | 2020-12-29 | 2021-03-16 | 中国电建集团上海能源装备有限公司 | Gas shielded welding wire for nuclear power containment vessel and preparation and application thereof |
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| Publication number | Publication date |
|---|---|
| CN104128715B (en) | 2016-08-24 |
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Address after: Zigong City, Sichuan province 643010 Daan District Ma Chong Kou Street No. 2 Patentee after: ATLANTIC CHINA WELDING CONSUMABLES, Inc. Patentee after: SHANGHAI ATLANTIC WELDING CONSUMABLES Co.,Ltd. Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: Zigong City, Sichuan province 643010 Daan District Ma Chong Kou Street No. 2 Patentee before: ATLANTIC CHINA WELDING CONSUMABLES, Inc. Patentee before: SHANGHAI ATLANTIC WELDING CONSUMABLES Co.,Ltd. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address after: Zigong City, Sichuan province 643010 Daan District Ma Chong Kou Street No. 2 Patentee after: ATLANTIC CHINA WELDING CONSUMABLES, Inc. Patentee after: SHANGHAI ATLANTIC WELDING CONSUMABLES Co.,Ltd. Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: Zigong City, Sichuan province 643010 Daan District Ma Chong Kou Street No. 2 Patentee before: ATLANTIC CHINA WELDING CONSUMABLES, Inc. Patentee before: SHANGHAI ATLANTIC WELDING CONSUMABLES Co.,Ltd. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE |
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