CN104128715B - A kind of gas protecting welding wire for midium-carbon steel containment - Google Patents
A kind of gas protecting welding wire for midium-carbon steel containment Download PDFInfo
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- CN104128715B CN104128715B CN201410380865.5A CN201410380865A CN104128715B CN 104128715 B CN104128715 B CN 104128715B CN 201410380865 A CN201410380865 A CN 201410380865A CN 104128715 B CN104128715 B CN 104128715B
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- Prior art keywords
- welding wire
- welding
- midium
- carbon steel
- gas protecting
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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
Abstract
The present invention provides a kind of gas protecting welding wire for midium-carbon steel containment, belongs to field of welding material.The gas protecting welding wire that the present invention provides, its 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%；Remaining composition is ferrum and inevitable impurity.Low cost of the present invention, welding arc stablility, spatter is little, and appearance of weld is attractive in appearance, gained deposited metal and welding point have good comprehensive mechanical property under as-welded, low temperature impact properties is good, has splendid toughness, can be widely used for the welding for steel structure 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 midium-carbon steel 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 that economical energy resources sustainable development has its own strategic significance.
Nuclear power is as current economical and effective and is really realized the novel alternative energy source that commercialization utilizes, and its development potentiality is not accommodating doubts.Present stage, China was in the trend that the clean energy resourcies such as nuclear power are widely applied, and nuclear power projects will be the emphasis of China's development of clean energy resource from now on.
The generation Ⅲ nuclear power station that China is the most building, draw the operating experience of the most secondary nuclear power technology technically, fully use Sci-tech Research Achievements in decades, according to new security legislation design, using major accident as design basis, therefore the load capacity of major accident is needed to reach a new height by metal containment, and the welding standard for metal containment just proposes new requirement.
Steel containment vessel used in three generations nuclear power plant is mainly the materials such as SA738Gr.B steel at present, but it is not specifically designed for the welding wire that these class steel are used at present, the welding wire that can only use other kind welds, have with high costs, the most first-class shortcoming of welding quality so that three generations's nuclear power plant project progress is affected by a certain extent.In today that nuclear power technology develops rapidly, from Nuclear Safety angle, the airtight welding of metal containment is just particularly important, and is therefore badly in need of a kind of welding wire for the welding of three generations's midium-carbon steel containment of exploitation.
Summary of the invention
The purpose of invention is to provide a kind of gas protecting welding wire for midium-carbon steel containment; low cost, welding arc stablility; spatter is little; appearance of weld is attractive in appearance; especially welding wire deposited metal composition is close with SA738Gr.B steel plate composition; both keep consistent as-welded with the mechanical property of heat treatment state, fully meet SA738Gr.B steel welding performance requirement.
For realizing the object of the invention, the technical solution used in the present invention is as follows:
A kind of gas protecting welding wire for midium-carbon steel 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%；
Remaining composition is ferrum and inevitable impurity.
The content of described copper comprises the copper being plated in welding wire surface.
Preferably, described gas protecting welding wire uses Ar and CO when welding2Mixed gas protected, the volume ratio of described mixed gas is Ar:CO2=4:1.
The effect of each element and mechanism in the present invention:
C: when C content is relatively low, weld strength is relatively low；When C content is too high, welding seam toughness declines, and therefore in this welding wire, the percentage by weight of C is preferred with 0.07 ~ 0.12%.
Mn: be the effective element of weld seam Strengthening and Toughening, be conducive to deoxidation when gas shielded welding, prevents from causing the formation of the iron sulfide of fire check, and therefore in this welding wire, the percentage by weight of Mn is preferred with 1.10 ~ 1.60%.
Si: on the one hand have deoxidation, the most also butt welding is sewed with invigoration effect, but can affect the toughness of weld seam when Si content is the highest in weld seam, reduces the cracking resistance of weld seam, and therefore in this welding wire, the percentage by weight of Si is preferred with 0.25 ~ 0.55%.
Ni: be conducive to improving the toughness especially low-temperature impact toughness of 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 big with matrix constituent difference, welding wire cost increases simultaneously, and therefore in this welding wire, the percentage by weight of Ni is preferred with 0.80 ~ 1.40%.
S, P harmful element, can produce some adverse effects, mainly can reduce ductility and the toughness of steel processing characteristics, causes crackle when forging and rolling, also can reduce the decay resistance of steel.Therefore these elements must control in minimum zone as far as possible.In this welding wire, the percentage by weight of S, P controls as S≤0.025%, P≤0.025%.
Cr: be a kind of effective intensified element, and have the effect of fining ferrite grains, but too high Cr can reduce the toughness of weld seam, and therefore in this welding wire, the percentage by weight of Cr controls as Cr≤0.20%.
Mo: be a kind of effective intensified element, and have the effect of fining ferrite grains, 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 is preferred with 0.10 ~ 0.30%.
The invention provides a kind of gas protecting welding wire for midium-carbon steel containment, have the beneficial effect that:
One, the gas protecting welding wire for midium-carbon steel containment that the present invention provides; it is 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, has splendid toughness.The present invention, in the case of reducing gas protecting welding wire preparation cost, can be widely used for the welding for steel structure in nuclear power engineering.
Two, the gas protecting welding wire for midium-carbon steel containment that the present invention provides, shows through test of many times, and welding technological properties and physicochemical property are good, technique reaches beautiful appearance, splashes little, and arc stiffness is good, deposition efficiency is high, can carry out all-position welding.
Three, the gas protecting welding wire for midium-carbon steel containment that the present invention provides, connects as-welded and heat treatment state deposited metal room temperature tensile R in all position weldingp0.2More than 540MPa, RmMore than 620MPa, 200 DEG C of high temperature Rp0.2More than 360MPa, RmMore than 525MPa；Under the conditions of as-welded and heat treatment Akv(-30 DEG C), Akv(-45 DEG C) more than 54J; percentage elongation is respectively greater than 20%; it is effectively improved weld integrity energy; solve the problem that weld metal low-temperature flexibility is not enough; disclosure satisfy that the demand to gas protecting welding wire in nuclear power work, can be widely used for the welding for steel structure in nuclear power engineering.
Four, the gas protecting welding wire for midium-carbon steel containment that the present invention provides, has ultralow S, P content (S, P total amount is less than 0.025), reduces welding wire deposited metal and produce the probability of solidification cracking in the deposited metal after welding.
Five, the gas protecting welding wire of the present invention uses argon-rich gas (Ar80%+CO when welding220%) protection, beneficially the stablizing of weld seam low-temperature impact toughness.
Detailed description of the invention
A kind of gas protecting welding wire for midium-carbon steel containment, welding wire preparation comprises the following steps: formulates welding wire smelting composition range, carries out raw material smelting；Raw material carries out peeling off, pickling pre-treatment；Carry out pulling to regulatory specifications semi-finished product by regulation compression ratio by the material after pre-treatment；Semi-finished product welding wire carries out compression polishing after electroless copper after pre-treatment；Bundling becomes independent packaging.
Embodiment 1
For the gas protecting welding wire of midium-carbon steel containment, it 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%；
Remaining composition is ferrum and inevitable impurity.
The welding wire of the present embodiment gained is used 80%Ar+20%CO2Protective gas, uses DC reverse connection to carry out soldering test, arc stability, splash little, appearance of weld is attractive in appearance.
Welding wire deposited metal composition is shown in Table 1, and deposited metal mechanical property is shown in Table 2.
Embodiment 2
For the gas protecting welding wire of midium-carbon steel containment, it 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%；
Remaining composition is ferrum and inevitable impurity.
The welding wire of the present embodiment gained is used 80%Ar+20%CO2Protective gas, uses DC reverse connection to carry out soldering test, arc stability, splash little, appearance of weld is attractive in appearance.
Welding wire deposited metal composition is shown in Table 3, and deposited metal mechanical property is shown in Table 4.
Above example will assist in those skilled in the art and is further appreciated by the present invention, but limits the present invention the most in any form.It should be pointed out that, it will be apparent to those skilled in the art that without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into protection scope of the present invention.
Claims (3)
1., for a gas protecting welding wire for midium-carbon steel containment, it 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%；Remaining composition is ferrum and inevitable impurity.
Gas protecting welding wire for midium-carbon steel containment the most according to claim 1, it is characterised in that: the content of described copper comprises the copper being plated in welding wire surface.
Gas protecting welding wire for midium-carbon steel containment the most according to claim 1, it is characterised in that: described gas protecting welding wire uses Ar and CO when welding2Mixed gas protected, the volume ratio of described mixed gas is Ar:CO2=4:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN104128715A CN104128715A (en) | 2014-11-05 |
| CN104128715B true CN104128715B (en) | 2016-08-24 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN112496595B (en) * | 2020-12-29 | 2022-11-11 | 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 | Priority date | Publication date | Assignee | Title |
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| JPS61115694A (en) * | 1984-11-09 | 1986-06-03 | Kawasaki Steel Corp | Submerged arc welding method of high tensile steel |
| JPH0244635B2 (en) * | 1985-10-09 | 1990-10-04 | Kawasaki Seitetsu Kk | GENSHIROYOKOZAINOTAMENOMIGU * AAKUYOSETSUYOWAIYAOYOBISONOSEIZOHOHO |
| CN101733580B (en) * | 2008-11-18 | 2013-08-28 | 山东索力得焊材有限公司 | 800MPa-grade high-strength high-tenacity gas shielded welding wire |
| CN101817122A (en) * | 2009-02-26 | 2010-09-01 | 上海大西洋焊接材料有限责任公司 | High-toughness submerged arc welding wire |
| CN102528318A (en) * | 2010-12-17 | 2012-07-04 | 鞍钢股份有限公司 | Gas shield welding wire for nuclear power |
| CN102649203B (en) * | 2012-05-24 | 2015-03-04 | 宝山钢铁股份有限公司 | Gas shielded welding wire and coil rod, with low cost, for nuclear power containment shell |
| CN102689104B (en) * | 2012-05-24 | 2015-03-04 | 宝山钢铁股份有限公司 | Gas shielded welding wire and wire rod for nuclear containment |
| CN103170762B (en) * | 2013-01-23 | 2015-06-17 | 中广核工程有限公司 | Solder wire special for nuclear power 20-control chrome steel |
| CN103659047B (en) * | 2013-11-29 | 2016-01-06 | 四川大西洋焊接材料股份有限公司 | A kind of welding wire for gas shielded welding for nuclear power Process for Heavy Support frame |
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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 |