CN103753050B - Carbon steel welding electrode for nuclear power and preparation method thereof - Google Patents
Carbon steel welding electrode for nuclear power and preparation method thereof Download PDFInfo
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- CN103753050B CN103753050B CN201410007956.4A CN201410007956A CN103753050B CN 103753050 B CN103753050 B CN 103753050B CN 201410007956 A CN201410007956 A CN 201410007956A CN 103753050 B CN103753050 B CN 103753050B
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- nuclear power
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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
- B23K35/302—Cu as the principal 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- 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
- B23K35/404—Coated rods; Coated electrodes
Abstract
The invention discloses a kind of Carbon steel welding electrode for nuclear power and preparation method thereof, by core wire with wrap the coating in core wire surface and form, described coating includes the composition of following weight percents content: marble 30 40%, fluorite 20 30%, silicon powder 6 9%, electrolytic manganese 3 6%, ferrosilicon 4 8%, rutile 7 10%, sodium carboxymethyl cellulose 0.4 0.9%, molybdenum-iron 5 8%, titanium dioxide 2 5%.The nuclear power carbon steel of the present invention has excellent welding usability, arc stability, splashes little, and blowing force is moderate, and slag spreadability is good, and appearance of weld is attractive in appearance, all positon good operability.Deposited metal composition, ray test, impact test are satisfied by the particular/special requirement of nuclear power, reach the advanced level of external similar welding rod.
Description
Technical field
The present invention relates to a kind of welding rod, meet, particularly to a kind of, the master that in ASME standard, E7015 requires
Carbon steel welding electrode for nuclear power that welding high-temperature resisting creep rupture strength to be used for requires and preparation method thereof.
Background technology
The construction of country's nuclear power station is that a grand strategy relating to economic security of the country is disposed, and domestic
Dependence on import always before construction steel plate and welding material, is therefore monopolized by fewer companies, holding of price
Continuous rise and the uncertain restraining factors becoming China's construction of nuclear power station of Lead Time, therefore nuclear power weldering
Connect that the production domesticization of material highlights is particularly important.The production domesticization of nuclear power welding material, has broken state's external welding
The material monopolization to this field, and provide strong guarantee to accelerating China's construction of nuclear power station.
Welding material is when welding, and melts with thermals source such as electric arcs, is formed and has desired properties
Welding metal, makes metal reach to connect the material of purpose.Therefore, welding material must have excellent weldering
Connecing manufacturability, welding operation is good, and weld defect is few, in view of importance and the building ring of nuclear power generating equipment
Border harshness, welding material also should possess good mechanical property.External producer similar nuclear power welding material
Generally there is the problem paying attention to mechanical property and sacrifice processing performance in material product；The similar weldering of other producers domestic
Have during bar welding that electric arc is not sufficiently stable, spatter is big, mechanical property can not meet high temperature resistant holding and hold
The disadvantages such as long requirement of strength.
Summary of the invention
The technical problem to be solved is to provide a kind of Carbon steel welding electrode for nuclear power and preparation side thereof
Method, slag fluidity is good when welding for welding rod, arc stability, splashing is little, the removability of slag is excellent, welding cigarette
Dirt is little, slag spreadability is good, and appearance of weld is attractive in appearance, weld seam bright degree is good, power all positon good operability.
Welding rod still has excellent tensile strength, high-temperature yield strength and low-temperature impact in high temperature environments for 40 hours
Toughness.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: a kind of nuclear power carbon steel electricity
Welding rod, by core wire with wrap the coating in core wire surface and form, described core wire includes following weight percents
The elemental composition of content:
Surplus is Fe and trace impurity；
Described coating includes the composition of following weight percents content:
The preparation method of above-mentioned Carbon steel welding electrode for nuclear power, comprises the following steps: each component of skin medicated powder of getting it filled
Mix homogeneously, uses potassium sodium mixing water glass as binding agent, and addition is the 18%-26 of coating gross weight
%, after stirring, is coated on core wire by the welding rod uniform external diameter of regulation, goes out bare terminal end through grinding and draw
After arc end, welding rod drying stove is used to divide low temperature 50-90 DEG C, middle temperature 90-150 DEG C, high temperature 350-400 DEG C
Three phases is dried, and i.e. obtains the special carbon steel of nuclear power.
Described low temperature 50-90 DEG C, middle temperature 90-150 DEG C, 350-400 DEG C of three phases of high temperature are dried
Time be respectively 1.5-2 hour, 1.5-2 hour, 1-2 hour.
The invention has the beneficial effects as follows: the special carbon steel of nuclear power of the present invention has excellent welding procedure
Property, arc stability, to splash little, blowing force is moderate, and slag spreadability is good, and appearance of weld is attractive in appearance, all positon
Good operability.Deposited metal composition, ray test, impact test are satisfied by the particular/special requirement of nuclear power,
Meeting the requirement of E7015 in ASME standard, welding deposited metal has excellent mechanical property under as-welded,
Especially when 615 DEG C × 40 hours heat treatments, still there is excellent tensile strength (Rm), bend
Yield strength excellent under the conditions of taking intensity (Rp0.2), elongation percentage, low-temperature impact and 360 DEG C
(Rp0.2) advanced level of external similar welding rod, is reached.
Detailed description of the invention
The Carbon steel welding electrode for nuclear power of the present invention, by core wire with wrap the coating in core wire surface and form, institute
State core wire and include the elemental composition of following weight percents content:
Surplus is Fe and trace impurity；
Described coating includes the composition of following weight percents content:
The preparation method of above-mentioned Carbon steel welding electrode for nuclear power, comprises the following steps: each component of skin medicated powder of getting it filled
Mix homogeneously, uses potassium sodium mixing water glass as binding agent, and addition is the 18%-26 of coating gross weight
%, after stirring, is coated on core wire by the welding rod uniform external diameter of regulation, goes out bare terminal end through grinding and draw
After arc end, welding rod drying stove is used to divide low temperature 50-90 DEG C, middle temperature 90-150 DEG C, high temperature 350-400 DEG C
Three phases is dried, and i.e. obtains the special carbon steel of nuclear power.
Described low temperature 50-90 DEG C, middle temperature 90-150 DEG C, 350-400 DEG C of three phases of high temperature are dried
Time be respectively 1.5-2 hour, 1.5-2 hour, 1-2 hour.
CaCO3It is marmorean to mainly comprise composition, under the effect of arc heat, resolves into CaO and CO2
Gas, plays the effect of slag making and gas making, it is possible to plays stable electric arc and improves the effect of de-slag, but CaCO3
Molten drop can be roughened too much, so marble is controlled at 30-40% by the present invention.
CaF2It is the main component of fluorite, belongs to alkaline fluoride, CaF2In F-can reduce arc atmosphere
The dividing potential drop of middle H, CaF2Resolution reduce the content of oxygen in deposited metal, be conducive to improving weld metal
Low-temperature impact toughness, a certain amount of fluorite can reduce the surface tension of liquid metal, improves slag
Mobility, improves the physical property of slag, but the fluorite of excess can cause electric arc unstable, in the present invention
Bright CaF is verified in pilot scale2Better effects is had when 20-30%.
Rutile is purer TiO2, it is possible to improve the physical property of slag, long slag is changed into short slag, improve
Appearance of weld, reduction are splashed, and the present invention is adding fashionable overall control at 7-10%.
The addition of electrolytic manganese can play the effect of desulfurization, deoxidation, it is also possible to weld seam transition manganese element,
Improve weld strength.The addition of electrolytic manganese is controlled at 3-6% by the present invention.
The addition of ferrosilicon also functions to the effect of deoxidation, but the too high toughness being unfavorable for weld metal of silicon, this
Ferrosilicon is controlled at 4-8% by invention.
Mo primarily serves the purpose of solution strengthening, can significantly improve creep limit and the stress-rupture strength limit of steel, but
Mo adds too much, can strengthen the brittle failure of steel, in the present invention control Mo-Fe addition at 5-8%.
Below in conjunction with detailed description of the invention, the present invention is described in further detail:
The each component proportion of coating (parts by weight) is as follows:
Embodiment 1
After being uniformly mixed by above-mentioned medicated powder, addition concentration is 40-450Potassium-sodium water glass 20 parts (weight
Amount number, lower with) mix homogeneously makes it be wrapped on H08E core wire in being placed on extrusion press, use welding rod to dry
Dry stove divides low temperature 50-90 DEG C × 2 hour, middle temperature 90-150 DEG C × 2 hour, high temperature 350-400 DEG C × 1.5
Hour three phases is dried.Gained welding rod epidermis is smooth, and eccentric stable, coating intensity is good, to institute
Obtain welding rod to weld, shape attractive in appearance, splash little, arc stability.
Embodiment 1 welding rod deposited metal mechanical property under as-welded room temperature:
Rm=558, Rp0.2=462, A=28.6 ,-30 DEG C of ballistic work is not: 250,248,240, and deposited metal is 615
DEG C × 40h condition of heat treatment under mechanical property: Rm=490, Rp0.2=400, A=29.0 ,-30 DEG C of impact
Merit is not: 230,246,236, and 360 DEG C of mechanical properties of high temperature: Rm=438, Rp0.2=320, radiographic inspection
Qualified.
Embodiment 2
After being uniformly mixed by above-mentioned medicated powder, addition concentration is 40-450After potassium-sodium water glass mix homogeneously
Make it be wrapped on H08E core wire in being placed in extrusion press, use welding rod drying stove to divide low temperature 50-90 DEG C × 2 little
Time, middle temperature 90-150 DEG C × 2 hour, high temperature 350-400 DEG C × 1.5 hour three phases dry.
Gained welding rod epidermis is smooth, and eccentric stable, coating intensity is good, welds gained welding rod, shapes U.S.
See, splash little, arc stability.
Embodiment 2 welding rod deposited metal mechanical property under as-welded room temperature:
Rm=576, Rp0.2=488, A=28.0 ,-30 DEG C of ballistic work is not: 202,198,206, and deposited metal is 615
DEG C × 40h condition of heat treatment under mechanical property: Rm=518, Rp0.2=428, A=28.8 ,-30 DEG C of impact
Merit is not: 196,200,190, and 360 DEG C of mechanical properties of high temperature: Rm=450, Rp0.2=336, radiographic inspection
Qualified.
Embodiment 3
After being uniformly mixed by above-mentioned medicated powder, addition concentration is 40-450After potassium-sodium water glass mix homogeneously
Make it be wrapped on H08E core wire in being placed in extrusion press, use welding rod drying stove to divide low temperature 50-90 DEG C × 2 little
Time, middle temperature 90-150 DEG C × 2 hour, high temperature 350-400 DEG C × 1.5 hour three phases dry.
Gained welding rod epidermis is smooth, and eccentric stable, coating intensity is good, welds gained welding rod, shapes U.S.
See, splash little, arc stability.
Embodiment 3 welding rod deposited metal mechanical property under as-welded room temperature:
Rm=585, Rp0.2=478, A=27.5 ,-30 DEG C of ballistic work is not: 198,192,190, and deposited metal is 615
DEG C × 40h condition of heat treatment under mechanical property: Rm=540, Rp0.2=458, A=27.8 ,-30 DEG C of impact
Merit is not: 180,184,174, and 360 DEG C of mechanical properties of high temperature: Rm=458, Rp0.2=366, radiographic inspection
Qualified.
Embodiment 4
After being uniformly mixed by above-mentioned medicated powder, addition concentration is 40-450After potassium-sodium water glass mix homogeneously
Make it be wrapped on H08E core wire in being placed in extrusion press, use welding rod drying stove to divide low temperature 50-90 DEG C × 2 little
Time, middle temperature 90-150 DEG C × 2 hour, high temperature 350-400 DEG C × 1.5 hour three phases dry.
Gained welding rod epidermis is smooth, and eccentric stable, coating intensity is good, welds gained welding rod, shapes U.S.
See, splash little, arc stability.
Embodiment 4 welding rod deposited metal mechanical property under as-welded room temperature:
Rm=602, Rp0.2=546, A=26.0 ,-30 DEG C of ballistic work is not: 170,178,180, and deposited metal is 615
DEG C × 40h condition of heat treatment under mechanical property: Rm=572, Rp0.2=488, A=25.2 ,-30 DEG C of impact
Merit is not: 150,164,148, and 360 DEG C of mechanical properties of high temperature: Rm=478, Rp0.2=400, radiographic inspection
Qualified.
Embodiment 5
After being uniformly mixed by above-mentioned medicated powder, addition concentration is 40-450After potassium-sodium water glass mix homogeneously
Make it be wrapped on H08E core wire in being placed in extrusion press, use welding rod drying stove to divide low temperature 50-90 DEG C × 2 little
Time, middle temperature 90-150 DEG C × 2 hour, high temperature 350-400 DEG C × 1.5 hour three phases dry.
Gained welding rod epidermis is smooth, and eccentric stable, coating intensity is good, welds gained welding rod, shapes U.S.
See, splash little, arc stability.
Embodiment 5 welding rod deposited metal mechanical property under as-welded room temperature:
Rm=590, Rp0.2=488, A=28.4 ,-30 DEG C of ballistic work is not: 212,208,216, and deposited metal is 615
DEG C × 40h condition of heat treatment under mechanical property: Rm=548, Rp0.2=452, A=29.2 ,-30 DEG C of impact
Merit is not: 198,184,188, and 360 DEG C of mechanical properties of high temperature: Rm=470, Rp0.2=386, radiographic inspection
Qualified.
Embodiment 6
After being uniformly mixed by above-mentioned medicated powder, addition concentration is 40-450After potassium-sodium water glass mix homogeneously
Make it be wrapped on H08E core wire in being placed in extrusion press, use welding rod drying stove to divide low temperature 50-90 DEG C × 2 little
Time, middle temperature 90-150 DEG C × 2 hour, high temperature 350-400 DEG C × 1.5 hour three phases dry.
Gained welding rod epidermis is smooth, and eccentric stable, coating intensity is good, welds gained welding rod, shapes U.S.
See, splash little, arc stability.
Embodiment 6 welding rod deposited metal mechanical property under as-welded room temperature:
Rm=566, Rp0.2=478, A=28.2 ,-30 DEG C of ballistic work is not: 232,250,236, and deposited metal is 615
DEG C × 40h condition of heat treatment under mechanical property: Rm=500, Rp0.2=418, A=28.4 ,-30 DEG C of impact
Merit is not: 200,202,210, and 360 DEG C of mechanical properties of high temperature: Rm=452, Rp0.2=376, radiographic inspection
Qualified.
Embodiment described above is merely to illustrate technological thought and the feature of the present invention, its object is to make
Those skilled in the art are it will be appreciated that present disclosure implementing according to this, it is impossible to only with the present embodiment
Limiting the scope of the claims of the present invention, what the most all disclosed spirit was made changes on an equal basis or modifies,
Still fall in the scope of the claims of the present invention.
Claims (3)
1. a Carbon steel welding electrode for nuclear power, by core wire with wrap the coating in core wire surface and form, it is special
Levying and be, described core wire includes the elemental composition of following weight percents content:
Surplus is Fe and trace impurity；
Described coating includes the composition of following weight percents content:
2. the preparation method of a Carbon steel welding electrode for nuclear power as claimed in claim 1, it is characterised in that bag
Include following steps: skin medicated powder each component mix homogeneously of getting it filled, use potassium sodium mixing water glass as binding agent,
Addition is the 18%-26% of coating gross weight, after stirring, is coated in by the welding rod uniform external diameter of regulation
On core wire, after grinding goes out bare terminal end and arc end, welding rod drying stove is used to divide low temperature 50-90 DEG C, middle temperature
90-150 DEG C, 350-400 DEG C of three phases of high temperature dry, i.e. obtain the special carbon steel of nuclear power.
The preparation method of Carbon steel welding electrode for nuclear power the most according to claim 2, it is characterised in that
Described low temperature 50-90 DEG C, middle temperature 90-150 DEG C, 350-400 DEG C of three phases of high temperature carry out the time dried
It is respectively 1.5-2 hour, 1.5-2 hour, 1-2 hour.
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| CN201410007956.4A CN103753050B (en) | 2014-01-03 | 2014-01-03 | Carbon steel welding electrode for nuclear power and preparation method thereof |
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| CN201410007956.4A CN103753050B (en) | 2014-01-03 | 2014-01-03 | Carbon steel welding electrode for nuclear power and preparation method thereof |
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| CN106425172A (en) * | 2016-12-09 | 2017-02-22 | 天津大桥焊材集团有限公司 | Ultralow-hydrogen welding rod for welding Q690-grade steel and preparation method of ultralow-hydrogen welding rod |
| CN107052622A (en) * | 2016-12-27 | 2017-08-18 | 上海焊接器材有限公司 | A kind of stainless steel electrode welded for low magnetic steel and preparation method thereof |
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| EP0767029A1 (en) * | 1995-09-08 | 1997-04-09 | Natunicon Trading Limited | Electrode for welding high alloy steels |
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| CN102689115A (en) * | 2012-06-11 | 2012-09-26 | 天津大桥焊材集团有限公司 | High-toughness and high-strength steel electrode for 60kg all position welding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3590719C2 (en) * | 1985-01-17 | 1991-01-31 | Kievskij Politechniceskij Institut Imeni 50-Letija Velikoj Oktjabrskoj Socialisticeskoj Revoljucii, Kiew/Kiev, Su | |
| CN102528310A (en) * | 2010-12-28 | 2012-07-04 | 昆山京群焊材科技有限公司 | Hydrogen-induced crack resisting high-ductility ultra-low hydrogen welding electrode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0767029A1 (en) * | 1995-09-08 | 1997-04-09 | Natunicon Trading Limited | Electrode for welding high alloy steels |
| CN101927407A (en) * | 2009-06-19 | 2010-12-29 | 上海大西洋焊接材料有限责任公司 | Carbon steel welding electrode special for steel for boilers and pressure vessels, with low-hydrogen coating |
| CN102689115A (en) * | 2012-06-11 | 2012-09-26 | 天津大桥焊材集团有限公司 | High-toughness and high-strength steel electrode for 60kg all position welding |
| CN102699578A (en) * | 2012-06-11 | 2012-10-03 | 天津大桥龙兴焊接材料有限公司 | High-toughness high-strength steel welding rod for 50-kilogram grade all-position welding |
| CN103008912A (en) * | 2012-12-17 | 2013-04-03 | 四川大西洋焊接材料股份有限公司 | Electric welding rod for manual X100 pipeline steel welding and production method thereof |
| CN103071946A (en) * | 2013-01-13 | 2013-05-01 | 四川大西洋焊接材料股份有限公司 | Supercritical ferrite and heat-resistant steel matched electrode and production method thereof |
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| CN103753050A (en) | 2014-04-30 |
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