CN105269179B - A kind of strip surfacing sintered flux used for submerged arc welding - Google Patents

A kind of strip surfacing sintered flux used for submerged arc welding Download PDF

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Publication number
CN105269179B
CN105269179B CN201510685944.1A CN201510685944A CN105269179B CN 105269179 B CN105269179 B CN 105269179B CN 201510685944 A CN201510685944 A CN 201510685944A CN 105269179 B CN105269179 B CN 105269179B
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China
Prior art keywords
welding
submerged arc
arc welding
sintered flux
flux used
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CN201510685944.1A
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Chinese (zh)
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CN105269179A (en
Inventor
周力
张伟
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Jinzhou Aolin Kang Swan Welding Ltd
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Jinzhou Aolin Kang Swan Welding Ltd
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Classifications

    • 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
    • B23K35/362—Selection of compositions of fluxes
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/12—Vessels
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
    • B23K9/042—Built-up welding on planar surfaces
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/18—Submerged-arc welding

Abstract

A kind of strip surfacing sintered flux used for submerged arc welding, it is composed of the following components by weight percentage：CaF226%~32%, CaO 15%~22%, Al2O325%~31%, MgO 12%~18%, Be2O32.5%~3.5%, TiO21%~2%, BiO20.5%~0.8%, the surplus SiO that each composition itself contains for more than2With inevitable impurity.Beneficial effect is：(1) highly uniform welding bead fusion penetration.(2) lower mother metal dilution rate level, it is allowed to which chemical composition and performance requirement are reached with less overlay cladding.(3) higher deposition efficiency, it is meant that higher productivity ratio.(4) chemical composition of uniform deposited metal.(5) because the line of solidification that overlay cladding is not concentrated, overlay cladding has smaller crack sensitivity.(6) unusual smooth overlay surface, can reduce bead welding quantity and overlap joint quantity.(7) high repeatable productivity.

Description

A kind of strip surfacing sintered flux used for submerged arc welding
Technical field
The invention belongs to emerging field of welding material, and in particular to available for nuclear reactor, pressure vessel corrosive medium, stone Change the band pole submerged arc overlay welding sintered flux of the pressure container inner lining large-area built-up weldings such as reactor.
Background technology
High-speed strip overlay welding technology is as an important big component reparation and the technology of production corrosion-resistant member, in modern work Very important effect is played in industry production.And with the development of petrochemical industry and nuclear industry, to the need of thick-walled pressure vessel Ask and increase, this kind of container is run under high temperature and high pressure environment, majority is corroded by medium, therefore it is required that solder flux has enough Corrosion resistance.Because container wall thickness is larger, if overall use stainless steel making, i.e., uneconomical and thickness is again big, so general at present It is that the container inner wall for forging bending thick plates in low-alloy carries out stainless steel built-up welding all over the manufacture method used, container is had full The pressure-resistant performance that foot is required, has excellent decay resistance again.
A kind of most economical and popular method with higher level alloy is strip surfacing.By welding (typical 60mm bandwidth) Heap is soldered on mother metal.In this way, one piece of melting of welding and mother metal；Two kinds of material mixing are freezing together, final to obtain One performance uniformly has the overlay cladding of good combination with mother metal.But there is following ask in existing strip surfacing sintered flux Topic：1、CaF2Content is low, influences spreading out property, fusion character and the removability of slag of welding bead；2、Al2O3Addition is low, and welding bead ripple is big；3、 Seam organization changes greatly, and the removability of slag is poor；4、SiO2It is individually added into so that SiO2Content is excessive, and making the oxidisability of slag strengthens, easily Oxidation, scaling loss alloying element.
The content of the invention
There is provided a kind of welding technological properties is excellent, height for the above mentioned problem existed present invention aim to address prior art The percentage composition of each main component meets desired submerged-arc welding in overlay cladding after the welding that fast welding effect is good, matching is different Strip surfacing sintered flux is used, is important big component reparation and production corrosion-resistant member, welding nuclear reactor, oil hydrogenation reaction The pressure container inner lining large-area built-up weldings such as device, chemical fertilizer synthetic tower provide welding material.
The adopted technical solution is that：A kind of strip surfacing sintered flux used for submerged arc welding, by weight percentage Than composed of the following components：
The surplus SiO that each composition itself contains for more than2With inevitable impurity.
The strip surfacing sintered flux used for submerged arc welding, it is composed of the following components by weight percentage：
The surplus SiO that each composition itself contains for more than2With inevitable impurity.
CaF2：It is a kind of meta-alkalescence salt, fusing point is low, and surface tension is small, the coefficient of expansion is big, is indispensable group in solder flux Point, by improving its addition, fusing point, surface tension and the viscosity of solder flux can be effectively reduced, improves spreading out the property of welding bead and melts Conjunction property, and improve the removability of slag.
Al2O3：Fusing point is high, and surface tension is big, and the slant acidity in acid slag, the meta-alkalescence in basic slag, oxidisability is small, right Deposited metal composition influence is small.By improving Al in solder flux2O3Content, makes welding bead ripple more tiny, by controlling maximum add Amount, prevent viscosity coefficient of dross increase, mobility be deteriorated, make welding bead both sides of the edge and mother metal fusion steeper, it is to avoid cause slag inclusion with The defects such as undercut.
CaO:For basic anhydride, relatively stablize, be not easily decomposed；By improving its addition, be conducive to slag from molten bath Effusion.
Be2O3、TiO2、BiO2Added as micro constitutent, to control seam organization change, improving the removability of slag can play bright Aobvious effect.
SiO2:It is a kind of main slag forming constituents in solder flux for acidic oxide, is suitably added and is conducive to improving slag Mobility, but addition it is excessive when can strengthen the oxidisability of slag, oxidizable and scaling loss alloying element.It is not right in the present invention SiO2It is specifically added, its content is brought into for other materials, so as to reach optimum performance.
The beneficial effects of the present invention are：
(1) highly uniform welding bead fusion penetration.
(2) lower mother metal dilution rate level, it is allowed to which chemical composition and performance requirement are reached with less overlay cladding.
(3) higher deposition efficiency, it is meant that higher productivity ratio.
(4) chemical composition of uniform deposited metal.
(5) because the line of solidification that overlay cladding is not concentrated, overlay cladding has smaller crack sensitivity.
(6) unusual smooth overlay surface, can reduce bead welding quantity and overlap joint quantity.
(7) high repeatable productivity.
Embodiment
With reference to embodiment, the present invention is described in detail.
Embodiment 1
A kind of strip surfacing sintered flux used for submerged arc welding, it is composed of the following components by weight percentage：
Binding agent uses K:Na=1:1 mixing waterglass, required raw material pulvis is sieved by being matched somebody with somebody Than weighing, review gross weight after be put into mixer, after dry mixing add account for mixed weight 25% mixing waterglass carry out it is wet Mix, wet-milling is sent into granulation disc by conveyer belt after wet-mixing is uniform is granulated, communicated band feeding electrical heating after the completion of granulation Garden cylinder drying stove, is dried at 230 DEG C, goes after moisture removal to sieve, the solder flux after screening in the range of standard particle size is sent Enter sintering furnace, sintered 1 hour at 1000 DEG C, sieved again after cooling of coming out of the stove, finished product is packaged, criticizes inspection, be put in storage, underproof Weary powder is re-fed into mixer to be granulated again.
Embodiment 2
A kind of strip surfacing sintered flux used for submerged arc welding, it is composed of the following components by weight percentage：
Binding agent uses K:Na=1:1 mixing waterglass, required raw material pulvis is sieved by being matched somebody with somebody Than weighing, review gross weight after be put into mixer, after dry mixing add account for mixed weight 15% mixing waterglass carry out it is wet Mix, wet-milling is sent into granulation disc by conveyer belt after wet-mixing is uniform is granulated, communicated band feeding electrical heating after the completion of granulation Garden cylinder drying stove, is dried at 120 DEG C, goes after moisture removal to sieve, the solder flux after screening in the range of standard particle size is sent Enter sintering furnace, sintered 1.5 hours at 800 DEG C, sieved again after cooling of coming out of the stove, finished product is packaged, criticizes inspection, be put in storage, unqualified Weary powder be re-fed into mixer and granulate again.
Embodiment 3
A kind of strip surfacing sintered flux used for submerged arc welding, it is composed of the following components by weight percentage：
Binding agent uses K:Na=1:1 mixing waterglass, required raw material pulvis is sieved by being matched somebody with somebody Than weighing, review gross weight after be put into mixer, after dry mixing add account for mixed weight 20% mixing waterglass carry out it is wet Mix, wet-milling is sent into granulation disc by conveyer belt after wet-mixing is uniform is granulated, communicated band feeding electrical heating after the completion of granulation Garden cylinder drying stove, is dried at 190 DEG C, goes after moisture removal to sieve, the solder flux after screening in the range of standard particle size is sent Enter sintering furnace, sintered 1 hour at 900 DEG C, sieved again after cooling of coming out of the stove, finished product is packaged, criticizes inspection, be put in storage, underproof Weary powder is re-fed into mixer to be granulated again.
Experiment is as follows：
Solder flux：SJ611 (18~60 mesh)
Welding：309L(0.5*60mm)
Mother metal：16MnR
Bead-welding technology parameter：
Voltage Electric current Speed of welding Stem elongation Preheating temperature Thickness in monolayer
V A cm/min mm ℃ mm
26~28 850~900 17~25 35~40 120 3
The chemical composition (percentage by weight) of steel plate, welding
Material C Si Mn S P Cr Ni Nb Fe
16MnR 0.16 0.32 0.91 0.006 0.008 -- -- -- Surplus
309L 0.010 0.35 1.97 0.008 0.015 23.5 12.0 -- Surplus
Solder flux bead-welding technology performance：
Welding arc stablility, appearance of weld is good, takes off slag easily, the defect such as pore-free, load mould, undercut, slag inclusion.
Contrast (percentage by weight) before cladding layer chemical composition is improved and after improvement
Mother metal dilution rate is big before improving, and it is small that cladding layer chemical composition does not reach mother metal dilution rate after requirement, improvement, built-up welding one Layer can reach requirement.This content embody the present invention the characteristics of one of i.e.：Lower mother metal dilution rate level, it is allowed to Less overlay cladding reaches chemical composition and performance requirement
The specific embodiment of the present invention is these are only, is not intended to limit the invention, for those skilled in the art For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made, Equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (2)

1. a kind of strip surfacing sintered flux used for submerged arc welding, it is characterized in that composed of the following components by weight percentage：
The surplus SiO that the raw material itself of each composition contains for more than2With inevitable impurity.
2. a kind of strip surfacing sintered flux used for submerged arc welding according to claim 1, it is characterized in that by weight percentage by Following components is constituted：
The surplus SiO that the raw material itself of each composition contains for more than2With inevitable impurity.
CN201510685944.1A 2015-10-21 2015-10-21 A kind of strip surfacing sintered flux used for submerged arc welding Active CN105269179B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514130A (en) * 2018-12-29 2019-03-26 天津市金桥焊材集团有限公司 A kind of dedicated submerged arc welding flux of carbon steel strip surfacing and application thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107175429B (en) * 2017-06-26 2019-06-14 天津市永昌焊丝有限公司 A kind of dedicated submerged arc welding flux of resistance to sea atmosphere corrosion

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1013086B (en) * 1988-08-12 1991-07-10 国家机械工业委员会哈尔滨焊接研究所 A kind of high-basicity sintered flux
JP3160459B2 (en) * 1994-03-29 2001-04-25 川崎製鉄株式会社 Flux for submerged arc welding
CN101985194A (en) * 2010-11-19 2011-03-16 天津市永昌焊丝有限公司 Surfacing flux special for alloy powder transition strip surfacing
CN102581518B (en) * 2012-03-23 2014-10-15 北京金威焊材有限公司 Sintered flux for stainless steel surfacing with band electrode
CN103753046A (en) * 2014-01-15 2014-04-30 四川大西洋焊接材料股份有限公司 Welding flux for carbon steel submerged arc strip surfacing and preparation method for welding flux

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514130A (en) * 2018-12-29 2019-03-26 天津市金桥焊材集团有限公司 A kind of dedicated submerged arc welding flux of carbon steel strip surfacing and application thereof

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