CN104772580B - Multi-electrode single-side submerged-arc welding bond flux - Google Patents
Multi-electrode single-side submerged-arc welding bond flux Download PDFInfo
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- CN104772580B CN104772580B CN201410601679.XA CN201410601679A CN104772580B CN 104772580 B CN104772580 B CN 104772580B CN 201410601679 A CN201410601679 A CN 201410601679A CN 104772580 B CN104772580 B CN 104772580B
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- welding
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- solder flux
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- 238000003466 welding Methods 0.000 title claims abstract description 184
- 230000004907 flux Effects 0.000 title claims abstract description 110
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 66
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 23
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 12
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 12
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 12
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 12
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims abstract description 6
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 6
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 46
- 239000002994 raw material Substances 0.000 claims description 35
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 21
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 15
- 239000001095 magnesium carbonate Substances 0.000 claims description 13
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 13
- 239000000395 magnesium oxide Substances 0.000 claims description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 86
- 239000002184 metal Substances 0.000 abstract description 86
- 230000007547 defect Effects 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910000679 solder Inorganic materials 0.000 description 61
- 239000002893 slag Substances 0.000 description 44
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 24
- 238000007789 sealing Methods 0.000 description 22
- 230000000694 effects Effects 0.000 description 21
- 229910000831 Steel Inorganic materials 0.000 description 20
- 238000000034 method Methods 0.000 description 20
- 239000010959 steel Substances 0.000 description 20
- 238000010521 absorption reaction Methods 0.000 description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 15
- 229910052760 oxygen Inorganic materials 0.000 description 15
- 239000001301 oxygen Substances 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 14
- 239000000126 substance Substances 0.000 description 13
- 238000010891 electric arc Methods 0.000 description 11
- 239000007787 solid Substances 0.000 description 11
- 239000000470 constituent Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 230000008021 deposition Effects 0.000 description 8
- 238000005476 soldering Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 238000007792 addition Methods 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 238000009863 impact test Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000011835 investigation Methods 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 229910052845 zircon Inorganic materials 0.000 description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 3
- 229910002551 Fe-Mn Inorganic materials 0.000 description 2
- 229910017082 Fe-Si Inorganic materials 0.000 description 2
- 229910017116 Fe—Mo Inorganic materials 0.000 description 2
- 229910017133 Fe—Si Inorganic materials 0.000 description 2
- 229910006639 Si—Mn Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 235000015170 shellfish Nutrition 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- 229910002593 Fe-Ti Inorganic materials 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 235000013547 stew Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- B23K35/362—Selection of compositions of fluxes
Abstract
The invention provides multi-electrode single-side submerged-arc welding bond flux, the surface of a surface weld joint can be further prevented from generating iron bulges, welded metal without welding defects can be formed, a stable weld joint shape and a stable weld joint appearance can be obtained, and furthermore welded metal which is excellent in mechanical property can be obtained. The multi-electrode single-side submerged-arc welding bond flux is characterized in that the bond flux comprises, by weight, 5%-24% of SiO2, 12%-30% of MgO, 3%-15% of CaO, 5%-17% of Al2O3, 7%-19% of CaF2, 0.5%-5.0% of ZrO2, 0.1%-3.0% of B2O3, 2%-7% of CO2 in an equivalent value, 10%-35% of Fe, 0.3%-4.0% of Si, 0.3%-1% of Mn, 0.1%-3.0% of Mo, 0.1%-3.0% of Ti, and the reminder comprising alkali metal oxide and inevitable impurities.
Description
Technical field
The present invention relates to the multi-electrode one side bonded flux used for submerged arc welding used in the big plate connection of shipbuilding etc., particularly
It is related to suitably obtain stable weld shape while the multi-electrode one side submerged-arc welding of the excellent welding metal of mechanical performance can be formed
Use bonded flux.
Background technology
Submerged-arc welding is following methods：Granular solder flux is continuously fed into electrode wire along welding distance dispersion in advance
Wherein so that produce electric arc between the front end of the electrode wire and mother metal to be carried out continuously welding.Using the submerged arc soldering method, can
Be efficiently obtained by the mechanical performance of stable weld job and welding metal, thus be applied to shipbuilding, steelframe, tubulation,
The large structures such as bridge, vehicle are in the wide spectrum of representative.
In recent years, as the development of energy industry has carried out the high intensity and high tenacity of steel and with structure
The application percentage of the research of the thickness of slab extremely aspect such as thicknessization that thing maximizes, high intensity or extremely thick steel increases year by year.Therefore, it is right
For submerged-arc welding, in order to improve welding procedure in productivity ratio, guarantee safety and durability, it is desirable to quality is further carried
Height, wherein the high efficiency particularly to welding is very big with the demand of the high tenacity of welding metal.
Particularly in shipbuilding industry, the construction quantity of large-scale bulk freighter, oil carrier, container freighter etc. tends to year by year
Increase, in their construction, in order to improve productivity ratio, guarantee safety and durability, for the further high efficiency of welding
Change very big with the demand of the further high tenacity of weld part.
In the work of the shipbuilding, the big plate connection as main shaft is buried using the solder flux copper packing one side shown in Fig. 1 more
Arc welding method (hereinafter referred to FCuB methods.).In the FCuB methods, back side solder flux 2 is interspersed among with the degree of about 4mm～7mm
On backing copper coin 1, in injecting air into air hose 3, abutted to the groove of the dorsal part corresponding to welded steel 4
(Open elder generations) back side 4a.And 1 layer of welding is carried out by table side dissemination surface solder flux 6 using 2～4 root wires 5, while forming surface weldering
Seam and sealing run.In the welding method, because back side solder flux 2 is sealed at groove back side 4a, thus the contact of liner (when
It is り) good；And the reinforcement due to suppressing sealing run using the backing copper coin 1 under back side solder flux 2, even if thus big
Constructed under the welding condition of electric current, attractive in appearance and welding defect solid sealing run is also obtained.Therefore, FCuB methods
It is widely used in thin plate to slab.
Compared with shielded arc welding or gas shielded arc welding, the weld heat input height of submerged-arc welding, mother metal dilution rate are big, because
And the performance of weld job and welding metal determines substantially by solder flux and welding wire into being grouped into.It is special in submerged-arc welding
It is not that above-mentioned one side submerged arc soldering method has the big feature of weld heat input height, mother metal dilution rate.
In the one side submerged arc soldering method, bonded flux of the main application as sintered flux.Bonded flux is various
Add in raw material obtained from waterglass etc. carries out pelletize and be fired at 500 DEG C or so, due to can freely adjust welding
The chemical composition of metal and iron powder can be added, thus increase such advantageous feature with deposition efficiency.
But, in the one side submerged-arc welding of high speed, abrasive grit projection is easily produced on the surface of surface weld, and have
The tendency that slag (ス ラ グ) easily adheres to.Particularly from from the aspect of wire-electrode number, compared with 3 electrodes, have during 4 electrode
Have the tendency of significantly to produce above-mentioned abrasive grit projection, confirm this and depend on speed of welding.That is, if increasing wire-electrode number, can
Speed of welding is enough improved, thus, because speed during 4 electrode accelerates, so as to easily produce the abrasive grit projection on surface weld surface
And slag attachment.
From this viewpoint, in the past since propose good weld job and welding metal mechanical performance be obtained
Submerged arc welding solder flux and one side welding method.
For example, Patent Document 1 discloses the basic skill of the high speed one side submerged arc soldering method with regard to carrying out using 4 electrodes
Art.Wherein, in order to obtain solid flawless welding metal in the one side submerged-arc welding of high speed, it is directed to welding wire footpath, welding
Electric current, speed of welding, interelectrode distance, solder flux and component of weld wire be defined so as to come seek improve.But, although should
Technology described in patent documentation 1 can obtain solid flawless welding metal, but it cannot improve the ferrum on surface weld surface
Grain projection and slag attachment, and it is not limited to addition deoxidizer, alloying constituent in solder flux.Therefore, if the high line energy of slab
Amount welding, then the tensile strength of welding metal is reduced, and then toughness is reduced, thus is existed and be cannot get stable weld job
With the problem of the good mechanical properties of welding metal.
Patent Document 2 discloses the high speed one side solder flux used for submerged arc welding using electrodes more than 3 electrodes and welding side
The correlation technique of method.The composition of solder flux is which defines, the granularity for further defining solder flux is constituted and bulk density, so as to realize
The improvement of solid surface weld and sealing run.But, granularity constitute in, due to granule of the particle diameter more than 840 μm it is little
In 20 weight %, thus the overall particle diameter of solder flux attenuates.Thus, in the conditions at the arc in welding, because it is fine and close spread it is tiny
The effect of solder flux, electric arc is difficult to extend, and weld shape is convex, and gas dissipation is deteriorated, and can produce the welding such as pit and pit and lack
Fall into, thus there is a problem that solid and stable surface weld and sealing run cannot be obtained.
Additionally, Patent Document 3 discloses the technology for obtaining solid sealing run, wherein using 3 electrodes with
On electrode, butt welding string diameter, welding current, interelectrode distance, the welding torch angle of electrode are defined.Described in patent documentation 3
Technology solid sealing run can be also obtained when high speed one side submerged-arc welding is carried out, but it cannot improve surface weld surface
Abrasive grit projection and slag attachment, it is impossible to obtain solid surface weld.
Patent Document 4 discloses the technology of the one side submerged arc soldering method with regard to carrying out using single electrode.Using the party
Method, can be by the weldering that makes speed of welding and weld heat input optimization solid, stable to obtain surface weld and sealing run
Slit shape and outward appearance, but due to welding for single electrode, thus exist that speed of welding is slow, welding efficiency is reduced, production efficiency shows
Write the problem for reducing.
Patent Document 5 discloses the technology with regard to multi-electrode high speed one side bonded flux used for submerged arc welding.The disclosure skill
Art seeks the abrasive grit projection on the surface weld surface in high speed one side submerged-arc welding and the improvement of undercut.Described in patent documentation 5
Define in technology solder flux constitute composition, particularly make be considered as abrasive grit projection producing cause iron powder (Fe) be 5% with
Under, as a result can reduce the generation of abrasive grit projection.But, in high speed single-sided welding, the Fe in solder flux is for being stablized
Sealing run shape and penetration neccessary composition, and be also can expect improve deposition efficiency composition.Therefore, such as specially
Technology described in sharp document 5 make like that iron powder addition be less than 5% when, it is impossible to obtain stable sealing run shape, and melt
Deposited efficiency is also reduced, thus there is a problem that weld job and production efficiency are significantly deteriorated.
The realize surface related to multi-electrode high speed one side bonded flux used for submerged arc welding is also disclosed in patent documentation 6 to weld
The technology of the improvement of the abrasive grit projection and weld defect of seam surface.In the technology described in patent documentation 6, with the institute of patent documentation 5
The technology stated similarly defines the composition of solder flux composition, particularly makes the iron powder (Fe) for being considered as abrasive grit projection producing cause
For less than 5%, further make to be below 16mm as the joint thickness of slab of welding object.But, disclosed in the patent documentation 6
In technology, even if making applied joint thickness of slab be below 16mm as described above, the Fe additions in solder flux are less than 5%
When cannot also obtain stable sealing run shape, and deposition efficiency is also reduced, thus there is weld job and production
The problem that efficiency is significantly deteriorated.
Additionally, propose in the patent documentation 7 of the applicant abrasive grit projection with regard to surface weld surface can be improved and
Weld defect and obtain the excellent welding metal of mechanical performance multi-electrode high speed one side bonded flux used for submerged arc welding technology.Specially
By the composition of restriction solder flux composition and then the granularity of adjustment solder flux, realize improves surface weldering to technology described in sharp document 7
The abrasive grit projection of seam surface, but only cannot completely inhibit abrasive grit projection by limiting solder flux constituent and adjustment flux particle size
Produce, and then in the case of welding steel plate, also with the problem that weld shape is convex.
Prior art literature
Patent documentation
Patent documentation 1：Japanese Unexamined Patent Publication 5-337651 publication
Patent documentation 2：Japanese Unexamined Patent Publication 6-277878 publication
Patent documentation 3：Japanese Unexamined Patent Publication 8-99178 publication
Patent documentation 4：Japanese Unexamined Patent Publication 2004-154841 publications
Patent documentation 5：Japanese Unexamined Patent Publication 2006-272348 publications
Patent documentation 6：Japanese Unexamined Patent Publication 2007-136516 publications
Patent documentation 7：Japanese Unexamined Patent Publication 2012-218053 publications
The content of the invention
Problems to be solved by the invention
Therefore, the present invention is to propose in view of the above problems, its object is to provide a kind of multi-electrode one side submerged-arc welding
With bonded flux, using the multi-electrode one side bonded flux used for submerged arc welding, even if particularly many more than 3 electrodes of steel plate
In electrode high speed one side submerged-arc welding, it is also possible to suppress surface weld surface to produce abrasive grit projection, the heavily fortified point of welding defect can be formed
Real welding metal, can obtain the stable weld shape of surface weld and sealing run and weld appearance, further can obtain
To the welding metal that mechanical performance is excellent.
Means for solving the problem
In order to solve above-mentioned problem, chemical composition of the present inventor for bonded flux and the iron powder former material for Fe compositions
Granularity of material etc. is studied.Its result finds, by limit bonded flux chemical composition, further limit for Fe into
The granularity of the iron powder raw material for dividing, even in the multi-electrode high speed one side submerged-arc welding more than 3 electrodes of steel plate, it is also possible to
The surface for suppressing surface weld produces abrasive grit projection, can form the solid welding metal of welding defect, obtain surface weldering
Seam and the stable weld shape of sealing run and weld appearance, are further obtained the excellent welding metal of mechanical performance.
That is, the multiple-electrode submerged arc weld bonded flux of the invention of the application the 1st is characterised by that in terms of quality %, it contains：
SiO2：5%～24%, MgO：12%～30%, CaO：3%～15%, Al2O3：5%～17%, CaF2：7%～19%,
ZrO2：0.5%～5%, B2O3：0.1%～3%, CaCO3And MgCO3In a kind or 2 kinds of CO2Scaled value it is total：2%～
7%th, Fe：10%～35%, Si：0.3%～4%, Mn：0.3%～1%, Mo：0.1%～3%, Ti：0.1%～3%, its
It includes alkali metal oxide and inevitable impurity.
Additionally, the multiple-electrode submerged arc weld bonded flux of the invention of the application the 2nd is characterised by, in the invention of the application the 1st
In, further also contain Al：0.05%～0.5%.
Additionally, the multiple-electrode submerged arc weld bonded flux of the invention of the application the 3rd is characterised by, in the invention of the application the 1st
Or in the invention of the application the 2nd, TiO2For less than 1.5%.
Further, the multiple-electrode submerged arc weld bonded flux of the invention of the application the 4th is characterised by, in the application the 1st
In the invention of invention～the application the 3rd, the mean diameter for the iron powder raw material of Fe compositions is less than 150 μm.
The effect of invention
By apply the present invention multi-electrode one side bonded flux used for submerged arc welding, particularly steel plate 3 electrodes with
On multi-electrode high speed one side submerged-arc welding in, it is also possible to the surface for further suppressing surface weld produces abrasive grit projection, can be formed
The solid welding metal of welding defect, the stable weld shape of surface weld and sealing run and weld appearance are obtained,
The excellent welding metal of mechanical performance is further obtained.
Description of the drawings
Fig. 1 is the sectional view for illustrating the solder flux copper packing one side submerged arc soldering method used in embodiments of the invention.
Fig. 2 is the figure of the bevel shape for illustrating the steel plate used in embodiments of the invention.
Specific embodiment
In order to be able to maintain that good welding metal machine in the multi-electrode one side submerged-arc welding of the steel plate of more than thickness 8mm
Tool performance, can further suppress surface weld surface produce abrasive grit projection, obtain the excellent surface of welding defect
The shape of weld seam and sealing run, chemical composition of the present inventor for bonded flux and the iron powder raw material for Fe compositions
Granularity etc. is studied in detail.
In the multi-electrode high speed one side submerged-arc welding applied in the connection of big plate that shipbuilding is built, thickness of slab is 8mm to 40mm's
Wide scope, the thickness of slab of steel plate is more thick, more needs the welding of high heat input.Therefore, in order to high heat input welding in be also obtained
Excellent welding metal mechanical performance, needs to add deoxidizer, alloying constituent etc. in bonded flux, and the oxygen amount of welding metal is pressed down
Relatively low, raising hardenability is obtained.But, if deoxidizer and alloying constituent is excessively added, the hardenability of welding metal is excessive, intensity
Increase, toughness is reduced.Therefore, it is right in order to develop bonded flux corresponding with the change of the weld heat input under various thicknesss of slab
Studied in various deoxidizers and alloying constituent, as a result found, by appropriate addition Si, Mn and Mo, good weldering is obtained
Connect metal stretching intensity and toughness.
Furthermore, it was found that by appropriate addition Al, even in the case where the thicker high heat input of steel plate thickness of slab is welded,
Good welding metal toughness is obtained.
Further, it is currently the one side submerged arc applied in the big plate connection of shipbuilding in terms of the improvement of weld job
The abrasive grit projection on the surface weld surface in weldering as most important problem improves.If surface weld produces abrasive grit projection, making
There are a large amount of coating to adhere to or easily peel off due to the shape of abrasive grit projection in abrasive grit jut in the coating engineering of ship,
Therefore the part peeled off gets rusty easily, corrosion resistance is significantly reduced without coating.Thus, at present in shipyard, using grinder
Or abrasive jet cleaning etc. removes the abrasive grit projection on surface weld surface, thus there is productivity ratio, to reduce caused cost elevated
Problem.
In order to improve above-mentioned problem, for the chemical composition of bonded flux is studied.For the generation of abrasive grit projection
Reason, the iron powder added in bonded flux (Fe) is reason, is added in welding metal and slag process of setting during welding
Iron powder melting in bonded flux falls within the welding metal surface of semi-molten state, and in the state of incomplete penetration table is remained in
Face.
Therefore, the iron powder in bonded flux is removed first, and as a result the surface of surface weld is without abrasive grit projection, but sealing run
Shape is unstable, and produces the weld defects such as poor penetration, undercut；Further, deposition efficiency is caused to drop due to removing iron powder
It is low, thus with the reduction of speed of welding, productivity ratio is significantly reduced.Can be distinguished by above-mentioned situation, in high speed single-sided welding, be
Stable sealing run shape, penetration and high deposition efficiency are obtained, the iron powder in bonded flux is neccessary composition, it is impossible to removed
Go.
Therefore, premised on the bonded flux of iron powder addition type, bonded flux chemical composition is studied, is as a result led to
Cross to TiO2、SiO2、MgO、CaO、A12O3、CaF2Optimization is carried out Deng slag composition and successfully reduce abrasive grit projection.But,
Only carrying out optimization to these slag compositions cannot completely inhibit abrasive grit projection, and further slag composition is studied.
Knowable to its result, in slag composition TiO is contained2When, slag is liable to stick to face of weld, can encourage abrasive grit and dash forward
The generation for rising.Therefore, in order that it does not contain TiO2, by using as far as possible TiO is not contained2Raw material, so as to successfully make abrasive grit
Projection is greatly decreased.
But, TiO2As be necessity in welding material for pilot arc stability and the composition of weld seam flatness into
Point, by eliminating TiO2Abrasive grit projection can be reduced, but it is disorderly to confirm arc stability variation, weld shape.This
Outward, TiO2Ti oxides etc. can be generated in welding metal tissue morphology, becomes the weight of the acicular ferrite for generating fine-grain
Nucleating point is wanted, the acicular ferrite is effective for intensity and toughness is improved.Thus, TiO2Eliminate can be so that for generating
The nucleating point of acicular ferrite disappears, and confirms the reduction of welding metal toughness.
In order to solve these problems, slag composition is further studied, wherein, carry out ZrO2With metal Ti's
Addition.With TiO2Equally, ZrO2Also the effect for being improved arc stability and weld seam flatness is confirmed, and it is completely unconfirmed
To the attachment of slag, further confirm that the stickiness (な じ body) in toe of weld portion is good, slag fissility is also good.
Nucleation for generating acicular ferrite can be by adding a small amount of metal Ti to carry out, and confirming makes welding metal tough
Property is improved.
By the optimization for carrying out above-mentioned solder flux chemical composition, the abrasive grit projection on surface weld surface can be greatly decreased, and
And excellent welding metal mechanical performance is obtained, but when welding for a long time at high speed and continuously, it is impossible to table is completely eliminated
The abrasive grit projection of face face of weld.
Therefore, in order to further improve the abrasive grit projection, the present inventor is conceived to the ferrum of the Fe compositions for bonded flux
The granularity of powder raw material, finds the granularity by adjustment iron powder raw material, and abrasive grit projection is successfully completely eliminated, and has obtained good
Surface weld shape and outward appearance.
Further distinguish, if the thickness of slab of steel plate is thickened, the shape of surface weld is convex, is further ground
Study carefully.Its result finds, by adjusting MgO, A12O3And SiO2Amount, can also make surface weld shape good in the welding of steel plate
It is good.
That is, in the multiple-electrode submerged arc weld bonded flux for applying the present invention, in terms of quality %, containing SiO2：5%～
24%th, MgO：12%～30%, CaO：3%～15%, A12O3：5%～17%, CaF2：7%～19%, ZrO2：0.5%～
5%th, B2O3：0.1%～3%, CaCO3And MgCO3In a kind or 2 kinds of CO2Scaled value it is total：2%～7%, Fe：10%
～35%, Si：0.3%～4%, Mn：0.3%～1%, Mo：0.1%～3%, Ti：0.1%～3%, other include alkali metal
Oxide and inevitable impurity.Now, in terms of quality %, Al can further be contained：0.05%～0.5%.And with
Quality % is counted, and can make TiO2For less than 1.5%, the mean diameter for the iron powder raw material of Fe compositions can be set as 150 μm
Below.
Below to apply the present invention multi-electrode one side bonded flux used for submerged arc welding flux constituent composition, for Fe into
The restriction reason that the granularity of the iron powder raw material for dividing is constituted is illustrated.It should be noted that the content of each composition with relative to
Quality % of multi-electrode one side bonded flux gross mass used for submerged arc welding when quality % is represented, is only recorded and represented representing
For %.
(SiO2：5%～24%)
SiO with silica sand, zircon sand, wollastonite, waterglass (sodium silicate, potassium silicate) etc. as raw material2It is good for being formed
The important component of good welded seam, if but it is excessive, and the oxygen amount in welding metal increases, degraded toughness.SiO2Less than 5%
When, the stickiness variation in toe of weld portion, the deterioration of slag fissility, and particularly undercut can be also produced in high speed single-sided welding.
On the other hand, SiO2During more than 24%, the oxygen amount of welding metal increases and toughness deterioration.Thus, SiO2It is set as 5%～24%.
(MgO：12%～30%)
Welding is reduced to aoxidize the MgO as raw material such as magnesia clinker, magnesium carbonate with the fire resistance and basicity for improving slag
The effect of the oxygen amount of metal.When MgO is less than 12%, the basicity of solder flux is reduced, and the oxygen amount in welding metal increases and toughness is reduced.
On the other hand, when MgO is more than 30%, the softening fusion point of solder flux increases, and the ripple of face of weld is thicker, slag fissility and weldering
Seam bad order.Thus, MgO is set as 12%～30%.
(CaO：3%～15%)
CaO with wollastonite, Calcium Carbonate etc. as raw material is for adjusting the fusing point of slag and the important component of mobility.
When CaO is less than 3%, the stickiness variation in toe of weld portion, weld appearance are bad, and undercut can be also produced in high speed single-sided welding.Separately
On the one hand, when CaO is more than 15%, slag fluidity is bad, and weld bead height is uneven and slag fissility is also bad.Thus, CaO
It is set as 3%～15%.
(Al2O3：5%～17%)
A1 with aluminium oxide as primary raw material2O3Be for obtain in high speed single-sided welding good slag fissility and
The particularly important composition of weld appearance.Additionally having makes the good effect of arc stability.A12O3During less than 5%, obtain not
To the effect above.On the other hand, if A12O3More than 17%, then convex weld is formed, slag fissility is also bad.Thus, A12O3If
It is set to 5%～17%.
(CaF2：7%～19%)
CaF with fluorite as raw material2With the effect that toughness improves, but due to its fusing point it is low, if thus it is excessive, weld
The flatness of seam is damaged.CaF2During less than 7%, the effect of immalleable improvement；If more than 19%, weld appearance can be caused not
It is good.Thus, CaF2It is set as 7%～19%.
(ZrO2：0.5%～5%)
ZrO with zircon sand, oxidation zircon etc. as raw material2Be for obtain in high speed single-sided welding arc stability and
Good weld shape/outward appearance, slag fissility and particularly important composition.ZrO2During less than 0.5%, cannot get the effect.
If in addition, ZrO2More than 5%, then the oxygen amount of welding metal increases and toughness is deteriorated.Thus, ZrO2It is set as 0.5%～5%.
(B2O3：0.1%～3%)
B with boron oxide, Borax etc. as raw material2O3With the effect that toughness is improved.B2O3During less than 0.1%, cannot be tough
Property improve effect；If more than 3%, welding metal solidification, toughness is deteriorated on the contrary.Thus, B2O3It is set as 0.1%～3%.
(CaCO3And MgCO3In a kind or 2 kinds of CO2Scaled value it is total：2%～7%)
From CaCO3(Calcium Carbonate), MgCO3The CO of (magnesium carbonate)2For making arc stability and improve welding metal
It is important element for toughness, it has following effects：The CaCO in welding3And MgCO3Decompose, CO or CO2Gas makes electric arc
It is stable, while reducing the nitrogen partial pressure in arc atmosphere, reduce the nitrogen quantity of welding metal.CaCO3And MgCO3In a kind or 2 kinds
CO2When adding up to less than 2% of scaled value, electric arc is unstable, particularly the shape and bad order of surface weld, and welds gold
The nitrogen of category increases, and toughness is reduced.On the other hand, if CaCO3And MgCO3In a kind or 2 kinds of CO2The total of scaled value exceedes
7%, then CO or CO2Gas excess, in face of weld pit is produced.Therefore, CaCO3And MgCO3In a kind or 2 kinds of CO2Change
Calculation value adds up to 2%～7%.
(Fe：10%～35%)
Fe with the ferroalloy such as iron powder and Fe-Si, Fe-Mn or Fe-Mo as raw material has raising deposition efficiency and concentration
The effect of electric arc.When Fe is less than 10%, deposition efficiency is reduced, the centrality of electric arc is deteriorated, thus the weld shape of sealing run
It is unstable.On the other hand, when Fe is more than 35%, produces abrasive grit projection in face of weld and cause slag attachment, slag fissility
Also it is bad.Thus, Fe is set as 10%～35%.
(for the mean diameter of the iron powder raw material of Fe compositions：Less than 150 μm)
Granularity for the iron powder raw material of Fe compositions is to disappear completely at high speed and in continuous prolonged welding
Except the important factor of the abrasive grit projection of face of weld.In order that face of weld does not produce abrasive grit projection, the morning in welding is needed
Stage phase makes iron powder melting drop in motlten metal, is realized certain by the way that the overall granularity of solder flux is defined to into optimal composition
The improvement of degree, but the granularity of the iron powder raw material preferably applied is the iron powder raw material of more particulate, and its mean diameter is preferred
For less than 150 μm.But, in the present invention, it is not necessary that the mean diameter of iron powder raw material is less than 150 μm, even if
Desired effect can have also been given play to more than the particle diameter.
(Si：0.3%～4%)
As deoxidant element, it can reduce the oxygen amount of welding metal to Si with metal Si, Fe-Si, Fe-Si-Mn etc. as raw material.
When Si is less than 0.3%, cannot get deoxidation effect, toughness is reduced.On the other hand, when Si is more than 4%, welding gold is residued in superfluously
Intensity is caused to improve in category, toughness is reduced.Thus, Si is set as 0.3%～4%.
(Mn：0.3%～1%)
As deoxidant element in the same manner as Si, it can reduce welding to Mn with metal Mn, Fe-Mn, Fe-Si-Mn etc. as raw material
The oxygen amount of metal.When Mn is less than 0.3%, cannot get deoxidation effect, toughness is reduced.On the other hand, when Mn is more than 1%, superfluous ground
Residue in welding metal and cause intensity raising, toughness to reduce.Thus, Mn is set as 0.3%～1%.
(Mo：0.1%～3%)
Mo using metal Mo, Fe-Mo as raw material is important composition as the hardenability increase element of welding metal.Mo
During less than 0.1%, the intensity decreases of welding metal, the effect for also improving without toughness；On the other hand, when Mo is more than 3%, welding
The hardenability of metal is excessive, and much higher hard, toughness are reduced.Thus, Mo is set as 0.1%～3%.
(Ti：0.1%～3%)
Ti with metal Ti, Fe-Ti etc. as raw material generates Ti oxides etc. in the tissue morphology of welding metal, is generation
The important nucleating point of the acicular ferrite of fine-grain, the acicular ferrite is effective for intensity and toughness is improved.
When Ti is less than 0.1%, it is impossible to generate and effective acicular ferrite, toughness reduction are improved to toughness.On the other hand, Ti is more than 3%
When, the intensity raising of welding metal, toughness are reduced.Thus, Ti is set as 0.1%～3%.
(Al：0.05%～0.5%)
Al is strong deoxidizer, and in the welding of the thicker high heat input of the thickness of slab of welding object steel plate, it can ensure that welding
The toughness of metal.When Al is less than 0.05%, the effect of toughness cannot be guaranteed in the welding of high heat input.On the other hand, Al
During more than 0.5%, its in the form of the oxide in welding metal excessive residual and cause the toughness of welding metal to reduce.Cause
And, Al is preferably set to 0.05%～0.5%.But, in the present invention, the content of Al is set as 0.05%～0.5% not
For necessary, even if departing from the scope, desired effect can have also been given play to.
(TiO2：Less than 1.5%)
TiO2It is that, for the effective ingredient of pilot arc stability and weld seam flatness, but it is also easily to adhere to slag
In face of weld, the composition of the generation for encouraging abrasive grit projection.Thus, it is preferable to as the TiO of the impurity in each raw material2Content is tried one's best
Low, its content is preferably less than 1.5%.But, in the present invention, the TiO2Content be less than 1.5% not for necessary,
Even if exceeding the scope, desired effect can have also been given play to.
Other are：From the K of waterglass2O and Na2The alkali metal oxides such as O：Less than 5%；And P, S etc. are inevitably
Impurity, causes toughness to reduce because P and S can generate the compound of low melting point, thus it is preferred that reducing P and S as far as possible.
It should be noted that having used the single-sided welding of the multi-electrode one side bonded flux used for submerged arc welding of the present invention can be
Welded in the case of improving arc stability, welding wire feeding, deposition efficiency, thus be suitable for the welding wire footpath after combination
Multi-electrode one side submerged-arc welding more than 4.0mm～6.4mm, 3 electrodes.
Embodiment 1
The effect of the present invention is further described below by embodiment.
What is adjusted using various flux constituents shown in table 1 and to the granularity of the iron powder raw material for Fe compositions is viscous
The welding wire of knot solder flux, the back side solder flux of chemical composition shown in table 2 and chemical composition shown in table 3, by chemical composition shown in table 4
Thickness of slab be processed into bevel angle as shown in Figure 2 for the steel plate (label A) of 25mm and be 50 °, stew bevel shape of the side for 5mm,
Implement shown in Fig. 1 under the welding condition based on condition No.1 (3 electrode) shown in table 5 or condition No.2 (4 electrode)
The submerged-arc welding of FCuB one sides is tested.
It is in the FCuB one sides submerged-arc welding test, the back side solder flux comprising the composition shown in table 2 is left with about 4mm～7mm
The right side is disseminated to backing copper coin, in drawing air into air hose 3, is abutted to the dorsal part corresponding to welded steel 4
Groove back side 4a.And 1 layer of welding is carried out by table side dissemination surface solder flux 6 using 2～4 root wires 5, while forming surface weld
And sealing run.
It should be noted that carry out to the bonded flux shown in table 1 after pelletize by sticker of waterglass, 400 DEG C～
Fire 2 hours at 550 DEG C, granulate is into 1.4mm × 0.15mm.
In addition, the welding wire shown in table 3 uses welding wire as follows：Former line Jing undergauges, annealing, pickling, copper plating and make
Into base line (plain Line), these base line drawings are used to 4.8mm diameters and 6.4mm diameters.
[table 2]
* other are CO2, alkali metal oxide and inevitable impurity.
[table 3]
* other are Fe and inevitable impurity.
[table 4]
With regard to the evaluation of each trial-production bonded flux, electric arc during one side submerged-arc welding is carried out under condition No.1 or condition No.2
Stability, welding after slag fissility, whether there is undercut, whether there is surface weld surface abrasive grit projection and slag attachment, weld seam
The investigation of outward appearance/shape, further carries out the investigation of the tensile strength, toughness and welding metal oxygen amount of welding metal.
With regard to the mechanical performance evaluation of welding metal, centered on the central authorities of the steel plate thickness of slab of soldering test body but shellfish is taken
Impact test piece (JIS Z2242 V notched specimens) and tension test sheet (JIS Z 224110), implement mechanical test.It is tough
Property evaluation carried out using -20 DEG C of Charpy impact test, using 3 samples repeat respectively test, entered with meansigma methodss
Row is evaluated.It should be noted that in Charpy impact test, energy absorption is good for more than 80J.During tensile strength is evaluated,
490MPa～690MPa is good.These survey results are shown in Table 6 in the lump.
Solder flux label F1～F10 in table 1 and table 6 is example of the present invention, solder flux label F11～F24 is comparative example.As this
In solder flux label F1, F2, F4 of example～F6, F8 and F9, the mean diameter of flux constituent and iron powder raw material be it is appropriate,
Thus be that arc stability and slag fissility are good and without surface in the one side submerged-arc welding based on 3 electrodes or 4 electrodes
The abrasive grit projection of face of weld and slag attachment, surface weld and sealing run are respectively provided with good weld shape/outward appearance and weld
The mechanical performance for connecing metal is also excellent, is the result being extremely satisfied with.It should be noted that in solder flux label F3 and F7, due to
The mean diameter of iron powder raw material is big, thus generates the projection of a small amount of iron powder.Additionally, in solder flux label F10, due to TiO2
It is many, thus produce a small amount of abrasive grit projection and slag attachment, but the scope to have no problem in practicality on surface weld surface.
In the solder flux label F11 of comparative example, due to SiO2It is few, the stickiness in toe of weld portion is poor, slag fissility is bad, and also
Generate undercut.Further, since Ti is more, thus the tensile strength of welding metal is high, energy absorption is low value.
In solder flux label F12, due to SiO2It is many, thus the oxygen amount of welding metal is more, energy absorption is low value.Additionally, by
In TiO2It is many, thus a small amount of slag is attached to face of weld, also generates a small amount of abrasive grit projection.
In solder flux label F13, because MgO is few, thus the oxygen amount of welding metal is more, energy absorption is low value.Further, since
The mean diameter of iron powder raw material is big, thus generates a small amount of abrasive grit projection in surface weld.
In solder flux label F14, because MgO is more, thus the ripple of face of weld is thicker, slag fissility and weld appearance become
Difference.Further, since Si is few, thus the oxygen amount of welding metal is more, energy absorption is low value.
In solder flux label F15, because CaO is few, thus the stickiness in toe of weld portion is poor, weld appearance is bad, also create and sting
Side.Further, since Si is more, thus the tensile strength of welding metal is high, energy absorption is low value.In solder flux label F16, due to
CaO is more, thus weld appearance and slag fissility are bad.Further, since Mn is few, thus the oxygen amount of welding metal is more, absorb energy
Measure as low value.
In solder flux label F17, due to A12O3It is few, thus electric arc is unstable, slag fissility and weld appearance are bad.This
Outward, because Mn is more, thus the tensile strength of welding metal is high, energy absorption is low value.
In solder flux label F18, due to A12O3It is many, thus weld shape and slag fissility are bad.Further, since Mo is few,
Thus the tensile strength and energy absorption of welding metal is low value.
In solder flux label F19, due to CaF2It is few, thus the energy absorption of welding metal is low value.Further, since Fe is few,
Thus welding capacity is few, surface weld shape defect；And due to the centrality of electric arc it is poor, thus the weld shape of sealing run
It is unstable.In solder flux label F20, due to CaF2It is many, thus weld shape is bad.Further, since Mo is more, thus welding metal
Tensile strength is high, energy absorption is low value.
In solder flux label F21, due to ZrO2It is few, thus electric arc is unstable, weld shape/outward appearance and slag fissility not
It is good.Further, since Ti is few, thus the energy absorption of welding metal is low value.
In solder flux label F22, due to ZrO2It is many, thus the oxygen amount of welding metal is more, energy absorption is low value.In addition, by
In CaCO3And MgCO3In a kind or 2 kinds of CO2Scaled value it is total few, thus electric arc is unstable, weld shape/outward appearance not
It is good.
In solder flux label F23, due to B2O3It is few, thus the energy absorption of welding metal is low value.Further, since CaCO3With
MgCO3In a kind or 2 kinds of CO2Scaled value it is total many, thus produce pit, the shape of surface weld/outer in face of weld
See bad.
In solder flux label F24, due to B2O3It is many, thus the tensile strength of welding metal is high, energy absorption is low value.In addition,
Due to Fe it is many, thus face of weld produce abrasive grit projection, slag attachment, slag fissility it is also bad.
Embodiment 2
What is adjusted using various flux constituents shown in table 7 and to the granularity of the iron powder raw material for Fe compositions is viscous
Knot solder flux, the back side solder flux of chemical composition shown in table 2, the welding wire of chemical composition shown in table 3, by the plate of chemical composition shown in table 4
Thickness is processed into bevel angle as shown in Figure 2 and is 50 °, bevel shape of the side for 5mm is stewed, in base for the steel plate (label B) of 40mm
Implement the FCuB one sides submerged-arc welding test shown in Fig. 1 under the welding condition of condition No.3 (4 electrode) shown in table 5.FCuB is mono-
The detailed content of face submerged-arc welding test method is same as Example 1.
With regard to the evaluation of each trial-production bonded flux, arc stability, weldering during one side submerged-arc welding is carried out under condition NO.3
Slag fissility after connecing, whether there is undercut, whether there is surface weld surface abrasive grit projection and slag attachment, weld appearance/shape
Investigation, further carry out the investigation of the tensile strength, toughness and welding metal oxygen amount of welding metal.
With regard to the mechanical performance evaluation of welding metal, centered on the central authorities of the steel plate thickness of slab of soldering test body but shellfish is taken
Impact test piece (JIS Z2242 V notched specimens) and tension test sheet (JIS Z 224110), implement mechanical test.It is tough
Property evaluation carried out using -20 DEG C of Charpy impact test, using 3 samples repeat respectively test, entered with meansigma methodss
Row is evaluated.It should be noted that in Charpy impact test, energy absorption is good for more than 80J.During tensile strength is evaluated,
490MPa～690MPa is good.These results of study are shown in Table 8 in the lump.
Solder flux label F25～F28 in table 7 and table 8 is example of the present invention, solder flux label F29～F32 is comparative example.As
In the solder flux label F25～F28 of example of the present invention, the mean diameter of flux constituent and iron powder raw material is appropriate, thus in base
In the one side submerged-arc welding of 4 electrodes of high heat input, arc stability and slag fissility are well and without surface weld surface
Abrasive grit projection and slag attachment, surface weld and sealing run are respectively provided with the machine of good weld shape/outward appearance and welding metal
Tool performance is also excellent, is the result being extremely satisfied with.
In solder flux label F29 in a comparative example, due to not containing Al, thus the energy absorption of welding metal is low value.
In solder flux label F30, due to Al it is many, thus the energy absorption of welding metal be low value.
In solder flux label F31, due to TiO2It is many, thus a small amount of slag is attached to face of weld, also produces a small amount of abrasive grit and dash forward
Rise.Further, since Al is few, thus the energy absorption of welding metal is low value.
In solder flux label F32, because the mean diameter of iron powder raw material is big, thus produces a small amount of abrasive grit in surface weld and dash forward
Rise.Further, since Al is more, thus the energy absorption of welding metal is low value.
Symbol description
1 backing copper coin
2 back side solder flux
3 air hoses
4 welded steels
The 4a grooves back side
5 welding wires
6 surface solder flux
Claims (3)
1. a kind of multi-electrode one side bonded flux used for submerged arc welding, it is characterised in that in terms of quality %, it contains：
SiO2：5%～24%,
MgO：12%～30%,
CaO：3%～15%,
Al2O3：5%～17%,
CaF2：7%～19%,
ZrO2：0.5%～5%,
B2O3：0.1%～3%,
CaCO3And MgCO3In a kind or 2 kinds of CO2Scaled value it is total：2%～7%,
Fe：10%～35%,
Si：0.3%～4%,
Mn：0.3%～1%,
Mo：0.1%～3%,
Ti：0.1%～3%,
TiO2：Less than 1.5%,
Other include alkali metal oxide and inevitable impurity.
2. multi-electrode one side as claimed in claim 1 bonded flux used for submerged arc welding, it is characterised in that in terms of quality %, it is also
Containing Al：0.05%～0.5%.
3. multi-electrode one side as claimed in claim 1 or 2 bonded flux used for submerged arc welding, it is characterised in that for Fe compositions
The mean diameter of iron powder raw material is less than 150 μm.
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| JP2014004851 | 2014-01-15 | ||
| JP2014-004851 | 2014-01-15 | ||
| JP2014148662A JP5869066B2 (en) | 2014-01-15 | 2014-07-22 | Bond flux for multi-electrode single-sided submerged arc welding |
| JP2014-148662 | 2014-07-22 |
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| CN104772580A CN104772580A (en) | 2015-07-15 |
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| CN106078003B (en) * | 2016-06-30 | 2020-01-03 | 南京南化建设有限公司 | Alkaline smelting flux for submerged-arc welding and application |
| CN106363284A (en) * | 2016-12-06 | 2017-02-01 | 武汉天高熔接股份有限公司 | Material suitable for submerged arc welding, anatexis and single-side welding process |
| JP6997025B2 (en) * | 2018-03-28 | 2022-02-03 | 株式会社神戸製鋼所 | Flux for submerged arc welding |
| CN109014657A (en) * | 2018-09-13 | 2018-12-18 | 郑州凤凰新材料科技有限公司 | A kind of High Speed Welding sintered flux and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999043A (en) * | 2007-01-05 | 2007-07-18 | 西安理工大学 | Submerged arc welding flux material used for high grade pipe line steel |
| CN101537550A (en) * | 2008-03-19 | 2009-09-23 | 上海纪好旺造船科技发展有限公司 | Submerged arc sintered flux and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589795A (en) * | 1981-07-10 | 1983-01-20 | Nippon Steel Corp | Flux for submerged arc welding by belt-like electrode |
| JPS5835097A (en) * | 1981-08-28 | 1983-03-01 | Kawasaki Steel Corp | Fusioned flux for submerged arc welding |
| JP2013154363A (en) * | 2012-01-27 | 2013-08-15 | Kobe Steel Ltd | Flux for one side submerged arc welding |
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2014
- 2014-10-31 CN CN201410601679.XA patent/CN104772580B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999043A (en) * | 2007-01-05 | 2007-07-18 | 西安理工大学 | Submerged arc welding flux material used for high grade pipe line steel |
| CN101537550A (en) * | 2008-03-19 | 2009-09-23 | 上海纪好旺造船科技发展有限公司 | Submerged arc sintered flux and production method thereof |
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