CN105033502B - The low-temperature steel all-position electorde and coating powder welded for Steel Spherical Tank - Google Patents

The low-temperature steel all-position electorde and coating powder welded for Steel Spherical Tank Download PDF

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Publication number
CN105033502B
CN105033502B CN201510497388.5A CN201510497388A CN105033502B CN 105033502 B CN105033502 B CN 105033502B CN 201510497388 A CN201510497388 A CN 201510497388A CN 105033502 B CN105033502 B CN 105033502B
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parts
core wire
coating powder
steel
welding
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CN105033502A (en
Inventor
徐锴
陈佩寅
张学刚
孙婷婷
陈波
王纯
王庆江
刘满雨
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HARBIN WEI'ER WELDING CO Ltd
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HARBIN WEI'ER WELDING CO Ltd
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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
    • B23K35/3066—Fe as the principal constituent with Ni 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
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires
    • B23K35/0272—Rods, electrodes, wires with more than one layer of coating or sheathing material
    • 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
    • B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials

Abstract

The present invention is to provide a kind of low-temperature steel all-position electorde and coating powder welded for Steel Spherical Tank.Welding rod includes core wire and coating powder；Core wire is H04E core wires, and the percentage by weight composition of core wire is the Fe of C≤0.04, Si≤0015, Mn≤0.40, S≤0.005, P≤0.010 and surplus；The weight of coating powder is 69 parts of 35 43 parts of marble, 20 27 parts of fluorite, 26 parts of titanium dioxide, 38 parts of zircon English, 6 12 parts of ferrotianium, 0.5 1 parts of soda ash, 48 parts of ferrosilicon, 28 parts of electrolytic manganese and nickel powder than composition；Coating powder stirring uniformly adds binding agent extrusion on core wire afterwards.The welding rod of the present invention has excellent all-position welding performance, particularly vertical position welding and overhead welding processing performance, and appearance of weld is attractive in appearance during vertical position welding, takes off slag easily, slag support molten iron ability is strong during overhead welding, appearance of weld is good, takes off slag easy.

Description

The low-temperature steel all-position electorde and coating powder welded for Steel Spherical Tank
Technical field
The present invention relates to a kind of welding material, specifically a kind of full position of low-temperature steel welded for Steel Spherical Tank Put covering of an electrode powder.The present invention also relates to a kind of low-temperature steel all-position electorde welded for Steel Spherical Tank.
Background technology
With developing rapidly for world petroleum economics, the continuous improvement of ethylene yield, spherical ethylene tank builds positive appearance one Booming trend.The direction that current spherical ethylene tank is built just towards maximization, low temperature is developed, and 09MnNiDR steel is used for low The construction of warm spherical storage tank, because it is different from the characteristic of low-temperature pressure container, it is necessary in the severe live carry out group of execution conditions Dress, welding and POST WELD HEAT TREATMENT OF ENTIRE, low temperature spherical tank with wlding in addition to enough intensity is needed, to its low-temperature flexibility and welding performance Propose higher technical requirements.General welding rod can not meet the welding of the steel such as low temperature spherical storage tank 09MnNiDR.
In the patent document of Application No. 200910068642.4, disclose《One kind is used for large scale low temperature spherical tank steel welding Welding rod》, its welding rod weld metal invented is at -60 DEG C with good low-temperature flexibility.There is no -70 DEG C of low temperature punchings still at present That hits good-toughness is used for the open report for the corresponding welding rod that spherical ethylene tank 09MnNiDR is welded.
The content of the invention
The present invention also aims to provide a kind of welding requirements that disclosure satisfy that the steel such as 09MnNiDR, -70 DEG C of low temperature The coating powder of the excellent low-temperature steel all-position electorde for being used for Steel Spherical Tank welding of impact flexibility.Also residing in offer one kind has Good combination property, excellent -70 DEG C of low-temperature impact toughness are used for the low-temperature steel all-position electorde that Steel Spherical Tank is welded.
The weight of the coating powder for being used for the low-temperature steel all-position electorde that Steel Spherical Tank is welded of the present invention includes than composition 35-45 parts of marble, 20-27 parts of fluorite, 2-6 parts of titanium dioxide, 3-8 parts of zircon English, 6-12 parts of ferrotianium, 0.5-1 parts of soda ash, ferrosilicon 6-9 parts of 4-8 parts, 2-8 parts of electrolytic manganese and nickel powder.
The preferred weight ratio composition of the coating powder for being used for the low-temperature steel all-position electorde that Steel Spherical Tank is welded of the present invention For：40-43 parts of marble, 20-27 parts of fluorite, 4-6 parts of titanium dioxide, 5-8 parts of zircon English, 9-12 parts of ferrotianium, 0.5-1 parts of soda ash, 6-7 parts of 5-8 parts of ferrosilicon, 2-8 parts of electrolytic manganese and nickel powder.
The low-temperature steel all-position electorde for being used for Steel Spherical Tank welding of the present invention includes core wire and coating powder；Described weldering Core be H04E core wires, core wire percentage by weight composition for C≤0.04, Si≤0015, Mn≤0.40, S≤0.005, P≤ The 0.010 and Fe of surplus；The weight of the coating powder includes 35-43 parts of marble, 20-27 parts of fluorite, titanium dioxide than composition 6-9 parts of 2-6 parts, 3-8 parts of zircon English, 6-12 parts of ferrotianium, 0.5-1 parts of soda ash, 4-8 parts of ferrosilicon, 2-8 parts of electrolytic manganese and nickel powder；Medicine Skin powder stirring uniformly adds binding agent extrusion on core wire afterwards.
The binding agent is potassium-sodium water glass, and the potassium sodium ratio of the potassium-sodium water glass is 3:1st, modulus is 2.7-2.9, concentration For -45.5 ° of Be ' of 44 ° of Be '.
The weight ratio of coating powder and binding agent is 1:0.24.
Marmorean main function in coating powder of the present invention is slag making, gas making, can adjust the fusing point of slag, glue Degree, increase slag surface tension force and interfacial tension, while improving the basicity of slag, marble, which can excessively cause to splash, to be increased, into Type is deteriorated, and occurs that blowing force is not enough very little, arc stiffness is inadequate during all-position welding, present invention determine that marmorean optimum content Scope is 35-42 parts；The main function of fluorite is slag making, and appropriate fluorite can reduce the surface tension of liquid metal, improve it Mobility so that appearance of weld is attractive in appearance, reduces weld porosity sensitiveness, can reduce the diffusible hydrogen content of deposited metal, fluorite Addition is too high, slag fluidity can be caused excessive, and all-position welding processing performance deteriorates, and fluorite addition is very few, weld seam into Type is deteriorated, and dehydrogenation is not enough, causes weld seam stomata occur, and fluorite addition optimum range is 20-27 parts；Titanium dioxide main function is Stabilising arc, slag making, adjust fusing point, viscosity, surface tension and the mobility of slag, improve appearance of weld, reduce and splash, optimal to add Measure as 2-6 parts；The main function of zircon sand is slag making, and appropriate zircon English can improve de- slag, improves fusing point, improves welding rod vertical position welding And overhead welding performance, the optimal addn of zircon sand is 3-8 parts；The main function of ferrosilicon is deoxidation, improves the low temperature of weld metal Impact flexibility, while to the necessary Si elements of weld seam transition, but it is too high can damage impact flexibility, it is too low and weld seam can be caused to take off Hypoxgia, it is therefore necessary to ensure in an appropriate scope, the optimal addn of ferrosilicon is 4-8 parts；The main work of electrolytic manganese With being deoxidation, while to the necessary Mn elements of weld seam transition, the too high and too low On Impact Toughness of electrolytic manganese addition is all bad, electricity Xie Meng optimal addn is 2-8 parts；Nickel powder plays a part of alloying constituent to weld seam transition Ni elements, can improve weld metal Impact flexibility, but the addition of nickel powder must reasonably be matched with electrolytic manganese addition, and the two matching is improper anti- And deteriorating the low-temperature impact toughness of weld seam, the optimal addn of nickel powder is 6-9 parts；Alkali is used to improve welding rod extrusion performance, adds Amount is too high, deteriorates all-position welding processing performance, too low unfavorable to extrusion, therefore, and the optimal addn of alkali is 0.5-1 parts.
Being mutually matched for mutual cooperation between each composition in the coating powder of the present invention, coating powder and core wire, embodies Go out following superiority：
1st, welding rod of the invention has excellent all-position welding performance, particularly vertical position welding and overhead welding processing performance, vertical position welding When appearance of weld it is attractive in appearance, take off slag easily, slag support molten iron ability is strong during overhead welding, appearance of weld is good, take off slag easy.
2nd, welding rod deposited metal of the invention has good combination property, excellent low-temperature impact toughness, KV2(-70 DEG C) can stablize more than 100J.
3rd, the welding rod scope of application of the invention is wide, and deposited metal performance remains to meet when weld heat input reaches 40kJ/cm Technical requirements.
Embodiment
Illustrate below and the present invention is described in more detail.
Embodiment 1
Powder is mixed and stirred for according to ratio shown in table 1 uniformly, to obtain coating powder.Then added into coating powder The potassium-sodium water glass of powder weight 24%, extrusion is in the low temperature steel electrode on H04E carbon steel core wires.
The coating powder raw-material weight of table 1 matches table
The H04E core wires chemical composition of table 2 table (%) by weight percentage
C Si Mn S P
0.032 0.010 0.35 0.004 0.009
The welding rod deposited metal composition table (Wt, %) of table 3
C Si Mn S P Ni Other element total amounts
0.04 0.13 0.55 0.003 0.006 2.65 0.02
The welding rod deposited metal mechanical property table of table 4
Rm(MPa) Rp0.2(MPa) A5 (%) KV2(J)(-70℃)
510 425 32.5 160,164,159
Embodiment 2
The powder raw material of ratio shown in table 5 are agitated uniform, then add the potassium-sodium water glass of powder weight 24%, pressure It is applied to the low temperature steel electrode on H04E carbon steel core wires.
Using with the identical H04E core wires of example 1
The coating powder raw-material weight of table 5 matches table
Marble Fluorite Titanium dioxide Zircon English Ferrotianium Alkali 45# ferrosilicon Electrolytic manganese metal Nickel powder It is total
43 27 3 3 6 1 4 6 7 100
The welding rod deposited metal composition table (Wt, %) of table 6
C Si Mn S P Ni Other element total amounts
0.036 0.10 0.60 0.004 0.009 2.35 0.02
The welding rod deposited metal mechanical property such as following table of table 7
Rm(MPa) Rp0.2(MPa) A5 (%) KV2(J)(-70℃)
525 445 31 166,159,161
Embodiment 3
The powder raw material of ratio shown in table 8 are agitated uniform, then add the potassium-sodium water glass of powder weight 24%, pressure It is applied to the low temperature steel electrode on H04E carbon steel core wires.
Using with the identical H04E core wires of example 1
The coating powder raw-material weight of table 8 matches table
Marble Fluorite Titanium dioxide Zircon English Ferrotianium Alkali 45# ferrosilicon Electrolytic manganese metal Nickel powder It is total
40 25 4 3 9 1 5 6 7 100
The welding rod deposited metal composition table (Wt, %) of table 9
C Si Mn S P Ni Other element total amounts
0.045 0.15 0.50 0.004 0.009 2.45 0.02
The welding rod deposited metal mechanical property table of table 10
Rm(MPa) Rp0.2(MPa) A5 (%) KV2(J)(-70℃)
540 460 29 155,145,156

Claims (3)

1. a kind of low-temperature steel all-position electorde welded for Steel Spherical Tank, including core wire and coating powder；It is characterized in that：It is described Core wire be H04E core wires, core wire percentage by weight composition for C≤0.04, Si≤0015, Mn≤0.40, S≤0.005, P≤ The 0.010 and Fe of surplus；The weight of the coating powder is 40 parts of marble, 26 parts of fluorite, 3 parts of titanium dioxide, zircon than composition 7 parts of 3 parts of English, 12 parts of ferrotianium, 1 part of soda ash, 4 parts of ferrosilicon, 4 parts of electrolytic manganese and nickel powder；Coating powder stirring is uniformly added and bonded afterwards Agent extrusion is on core wire；The low-temperature steel all-position electorde is used for the welding of 09MnNiDR steel.
2. a kind of low-temperature steel all-position electorde welded for Steel Spherical Tank, including core wire and coating powder；It is characterized in that：It is described Core wire be H04E core wires, core wire percentage by weight composition for C≤0.04, Si≤0015, Mn≤0.40, S≤0.005, P≤ The 0.010 and Fe of surplus；The weight of the coating powder is 43 parts of marble, 27 parts of fluorite, 3 parts of titanium dioxide, zircon than composition 7 parts of 3 parts of English, 6 parts of ferrotianium, 1 part of soda ash, 4 parts of ferrosilicon, 6 parts of electrolytic manganese and nickel powder；Coating powder stirring uniformly adds binding agent afterwards Extrusion is on core wire；The low-temperature steel all-position electorde is used for the welding of 09MnNiDR steel.
3. a kind of low-temperature steel all-position electorde welded for Steel Spherical Tank, including core wire and coating powder；It is characterized in that：It is described Core wire be H04E core wires, core wire percentage by weight composition for C≤0.04, Si≤0015, Mn≤0.40, S≤0.005, P≤ The 0.010 and Fe of surplus；The weight of the coating powder is 40 parts of marble, 25 parts of fluorite, 4 parts of titanium dioxide, zircon than composition 7 parts of 3 parts of English, 9 parts of ferrotianium, 1 part of soda ash, 5 parts of ferrosilicon, 6 parts of electrolytic manganese and nickel powder；Coating powder stirring uniformly adds binding agent afterwards Extrusion is on core wire；The low-temperature steel all-position electorde is used for the welding of 09MnNiDR steel.
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* Cited by examiner, † Cited by third party
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CN110369908A (en) * 2019-08-20 2019-10-25 哈尔滨威尔焊接有限责任公司 The excellent SA-508Gr.4N steel all position welding hydrogen controlled electrode of low-temperature impact toughness

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CN112404802A (en) * 2020-11-11 2021-02-26 哈尔滨威尔焊接有限责任公司 Secondary fire resistant all-position welding rod for fire-resistant construction steel Q345FRE/Q390FRE and preparation method thereof
CN114101973B (en) * 2021-12-10 2023-01-31 北京金威焊材有限公司 Alkaline coated stainless steel electrode
CN114293101B (en) * 2021-12-29 2023-02-03 本钢板材股份有限公司 Economical high-grade welding wire steel H04E and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2130371C1 (en) * 1997-05-27 1999-05-20 Открытое акционерное общество "Научно-исследовательский институт по монтажным работам" Electrode coat
CN1927528A (en) * 2005-09-09 2007-03-14 中国船舶重工集团公司第七二五研究所 Intergranular corrosion resistant high-strength full austenite welding rod
CN101879672A (en) * 2010-06-25 2010-11-10 中冶建筑研究总院有限公司 Special welding rod for -70 DEG C ferrite type low-temperature steel
CN101898284A (en) * 2010-07-14 2010-12-01 中国船舶重工集团公司第七二五研究所 Surfacing electrode for repairing hot forged mould
CN103447717A (en) * 2013-07-30 2013-12-18 中国船舶重工集团公司第七二五研究所 Low-alloy steel covered electrode for low-temperature steel welding
CN103817463A (en) * 2012-11-16 2014-05-28 李彬 High-strength welding rod

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411849A (en) * 1977-06-30 1979-01-29 Nippon Steel Corp Coated arc welding rod excellent in crack resistance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2130371C1 (en) * 1997-05-27 1999-05-20 Открытое акционерное общество "Научно-исследовательский институт по монтажным работам" Electrode coat
CN1927528A (en) * 2005-09-09 2007-03-14 中国船舶重工集团公司第七二五研究所 Intergranular corrosion resistant high-strength full austenite welding rod
CN101879672A (en) * 2010-06-25 2010-11-10 中冶建筑研究总院有限公司 Special welding rod for -70 DEG C ferrite type low-temperature steel
CN101898284A (en) * 2010-07-14 2010-12-01 中国船舶重工集团公司第七二五研究所 Surfacing electrode for repairing hot forged mould
CN103817463A (en) * 2012-11-16 2014-05-28 李彬 High-strength welding rod
CN103447717A (en) * 2013-07-30 2013-12-18 中国船舶重工集团公司第七二五研究所 Low-alloy steel covered electrode for low-temperature steel welding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110369908A (en) * 2019-08-20 2019-10-25 哈尔滨威尔焊接有限责任公司 The excellent SA-508Gr.4N steel all position welding hydrogen controlled electrode of low-temperature impact toughness

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