WO2022138177A1 - Flux de soudage à l'arc submergé - Google Patents
Flux de soudage à l'arc submergé Download PDFInfo
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- WO2022138177A1 WO2022138177A1 PCT/JP2021/045218 JP2021045218W WO2022138177A1 WO 2022138177 A1 WO2022138177 A1 WO 2022138177A1 JP 2021045218 W JP2021045218 W JP 2021045218W WO 2022138177 A1 WO2022138177 A1 WO 2022138177A1
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- Prior art keywords
- mass
- flux
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- welding
- Prior art date
Links
- 230000004907 flux Effects 0.000 title claims abstract description 133
- 238000003466 welding Methods 0.000 title claims abstract description 70
- 150000001875 compounds Chemical class 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 16
- 229910052700 potassium Inorganic materials 0.000 claims description 16
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 11
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 39
- 239000002184 metal Substances 0.000 abstract description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000002893 slag Substances 0.000 description 18
- 239000011324 bead Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- 239000011734 sodium Substances 0.000 description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009863 impact test Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 description 2
- 150000002830 nitrogen compounds Chemical class 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing 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
- B23K35/24—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
-
- 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
Definitions
- the present invention relates to a flux for submerged arc welding.
- reactors installed in petroleum refineries and operated under high temperature and high pressure
- a material having high strength and excellent high temperature characteristics such as 25% Cr-1.0% Mo is used.
- multi-layer welding by submerged arc welding which is a combination of solid wire and bond flux, is generally used.
- Such a reactor is required to have excellent toughness in a low temperature environment in addition to the above-mentioned high strength and high temperature characteristics in consideration of brittle fracture during operation in cold regions and suspension of operation.
- Patent Document 1 discloses a welding method in which Al and N are contained in a wire or a flux and welded for the purpose of improving the low temperature toughness and high temperature strength of the weld metal.
- the present invention has been made in view of the above problems, and is used for submerged arc welding of Cr-Mo-based steel plates, and stabilizes weld metal having excellent welding workability and excellent mechanical performance. It is an object of the present invention to provide a flux for submerged arc welding that can be obtained.
- the present inventors have improved work efficiency by containing a larger amount of Al than before in the flux for submerged arc welding and controlling the content of other components such as oxides. While trying, it was found that a weld metal having excellent mechanical performance can be stably obtained even when welding is performed with a high current.
- a flux for submerged arc welding used for submerged arc welding of Cr—Mo steel sheets For the total mass of flux Mn: 0.01% by mass or more and 5.00% by mass or less, Al: 0.50% by mass or more and 3.00% by mass or less, N: More than 0% by mass and 0.50% by mass or less, MgO: 5.0% by mass or more and 40.0% by mass or less, F: 5.0% by mass or more and 12.0% by mass or less, Ca: 9.5% by mass or more and 21.5% by mass or less, Al 2 O 3 : 11.0% by mass or more and 23.0% by mass or less, SiO 2 conversion value of Si and Si compound: 7.0% by mass or more and 20.0% by mass or less, CO 2 : Contains 3.0% by mass or more and 10.0% by mass or less, C: 1.00% by mass or less, Ni: 1.00% by mass or less, Flux for submerged arc welding characterized by being.
- a preferred embodiment of the present invention relating to the flux for submerged arc welding relates to the following [2] or [3].
- Fe The flux for submerged arc welding according to [1] or [2], which contains 0.10% by mass or more and 5.00% by mass or less.
- the flux for submerged arc welding according to the present invention, it is possible to stably obtain a weld metal having excellent welding workability and excellent mechanical performance.
- the flux for submerged arc welding according to the present embodiment (hereinafter, may be simply referred to as “flux”) is a flux for submerged arc welding used for submerged arc welding of Cr—Mo-based steel sheets, and is Mn or Mn. It contains a compound, Al, N, MgO, F, Ca, Al 2O 3 , Si or Si compound, CO 2 , C and Ni in predetermined amounts, respectively.
- Mn 0.01% by mass or more and 5.00% by mass or less>
- Mn is a component contained in order to secure the room temperature strength of the weld metal and particularly to improve the toughness. Mn also has the effect of deoxidizing the weld metal. If the Mn content in the flux is less than 0.01% by mass, the above effect cannot be obtained, the structure of the weld metal becomes coarse, and the toughness decreases. Therefore, the Mn content in the flux is 0.01% by mass or more, preferably 0.5% by mass or more, and more preferably 1.0% by mass or more with respect to the total mass of the flux.
- the Mn content in the flux exceeds 5.00% by mass, the creep rupture strength of the weld metal is deteriorated, and the temper embrittlement property is also deteriorated. Therefore, the Mn content in the flux is 5.00% by mass or less with respect to the total mass of the flux, preferably 4.00% by mass or less, and more preferably 3.00% by mass or less. Mn is contained in the flux in the form of Mn simple substance, Mn alloy, Mn compound or the like.
- Al 0.50% by mass or more and 3.00% by mass or less>
- Al is a component capable of improving the hardenability of the weld metal and increasing the toughness of the weld metal by miniaturizing the structure. If the Al content in the flux is less than 0.50% by mass, the above effect cannot be obtained. Therefore, the Al content in the flux is 0.50% by mass or more, preferably 0.6% by mass or more, and more preferably 0.8% by mass or more with respect to the total mass of the flux. It is more preferably 0.0% by mass or more, and most preferably 1.2% by mass or more. On the other hand, when the Al content in the flux exceeds 3.00% by mass, the structure becomes coarse and the toughness of the weld metal decreases.
- the Al content in the flux is 3.00% by mass or less, preferably 2.5% by mass or less, and more preferably 2.0% by mass or less with respect to the total mass of the flux. It is more preferably 8.8% by mass or less, and most preferably 1.6% by mass or less.
- Al is the total amount of acid-soluble Al contained in the flux in the form of a simple substance of Al or an Al alloy such as Fe—Al. Further, the Al content does not include compounds such as Al 2 O 3 shown below.
- N is a solid solution strengthening element and is a component capable of increasing the strength of the weld metal.
- the N content in the flux is preferably more than 0% by mass, preferably 0.05% by mass or more, more preferably 0.10% by mass or more, and 0.12 with respect to the total mass of the flux. It is more preferably 0% by mass or more, and most preferably 0.15% by mass or more.
- the N content in the flux exceeds 0.50% by mass, the proof stress and tensile strength of the weld metal are remarkably increased by the solid solution strengthening, and as a result, the toughness of the weld metal is lowered. Therefore, the N content in the flux is 0.50% by mass or less, preferably 0.30% by mass or less, more preferably 0.25% by mass or less, and 0. It is more preferably .22% by mass or less, and most preferably 0.20% by mass or less.
- N is contained in the flux as a nitrogen compound such as MnN, AlN and CrN. In the present embodiment, N is defined as the total amount of these nitrogen compounds converted into N.
- MgO has a high melting point, promotes solidification of slag, and has the effect of adjusting the bead shape. It also has the role of controlling the amount of oxygen in the weld metal.
- the MgO content in the flux is less than 5% by mass, the deoxidizing effect during welding is weakened and oxides are increased in the weld metal, so that the toughness is lowered. Therefore, the MgO content in the flux is 5.0% by mass or more, preferably 10.0% by mass or more, and more preferably 20.0% by mass or more, based on the total mass of the flux.
- the MgO content in the flux exceeds 40.0% by mass, the bead shape deteriorates and the slag peelability deteriorates. Therefore, the MgO content in the flux is 40.0% by mass or less, preferably 38.0% by mass or less, and more preferably 35.0% by mass or less, based on the total mass of the flux.
- F is contained in the flux in the form of a compound such as a CaF compound, has an effect of increasing the electric conductivity and fluidity of the molten slag, and is one of the components affecting the high temperature viscosity of the molten slag. If the F content in the flux is less than 5.0% by mass, the slag immediately solidifies, hindering the discharge of gas and causing slag seizure. Therefore, the F content in the flux is 5.0% by mass or more, preferably 6.0% by mass or more, and more preferably 7.0% by mass or more with respect to the total mass of the flux.
- the F content in the flux exceeds 12.0% by mass, the waviness of the bead becomes coarse and the appearance of the bead deteriorates. Therefore, the F content in the flux is 12.0% by mass or less with respect to the total mass of the flux, preferably 11.5% by mass or less, and more preferably 11.0% by mass or less.
- Ca 9.5% by mass or more and 21.5% by mass or less>
- Ca is contained as CaO or fluoride, and is a component that enhances the basicity of slag, enhances the cleanliness of the weld metal, and affects the fluidity of molten slag.
- the Ca content in the flux is 9.5% by mass or more with respect to the total mass of the flux, preferably 11.0% by mass or more, and more preferably 15.0% by mass or more.
- the CaO content in the flux is 21.5% by mass or less, preferably 21.0% by mass or less, and more preferably 20.0% by mass or less, based on the total mass of the flux.
- Al 2 O 3 is a component having an effect of improving the fluidity of slag and having a role of controlling the amount of oxygen in the weld metal. If the Al 2 O 3 content in the flux is less than 11.0% by mass, the weld bead and the base metal become less compatible and slag entrainment is likely to occur. Therefore, the Al 2 O 3 content in the flux is 11.0% by mass or more, preferably 13.0% by mass or more, and more preferably 15.0% by mass or more, based on the total mass of the flux. preferable.
- the Al 2 O 3 content in the flux exceeds 23.0% by mass, the waviness of the bead becomes coarse and the appearance of the bead deteriorates. Therefore, the Al 2 O 3 content in the flux is 23.0% by mass or less, preferably 22.0% by mass or less, and more preferably 20.0% by mass or less, based on the total mass of the flux. preferable.
- the Al 2 O 3 content is an Al 2 O 3 conversion value of Al contained in the Al compound excluding the Al alloy.
- Si and Si compound are components having an effect of improving the fluidity of the molten slag. If the SiO 2 conversion value of Si and the Si compound in the flux is less than 7.0% by mass, the weld bead and the base metal become less familiar with each other, and slag entrainment is likely to occur. Therefore, the SiO 2 conversion value in the flux is 7.0% by mass or more, preferably 8.0% by mass or more, and more preferably 9.0% by mass or more with respect to the total mass of the flux.
- the SiO 2 conversion value in the flux exceeds 20.0% by mass, the amount of oxygen in the weld metal increases and the oxide increases in the weld metal, so that the toughness decreases. Therefore, the SiO 2 conversion value in the flux is 20.0% by mass or less with respect to the total mass of the flux, preferably 18.0% by mass or less, and more preferably 15.0% by mass or less.
- Si is contained in the flux in the form of a simple substance of Si, a Si alloy, a Si compound, or the like.
- the SiO 2 conversion value is defined as a value obtained by converting the total of Si contained in all Si and Si compounds into SiO 2 .
- CO 2 is a component having an effect of controlling the amount of diffusible hydrogen in the weld metal.
- the CO 2 content in the flux is 3.0% by mass or more, preferably 4.0% by mass or more, and more preferably 5.0% by mass or more, based on the total mass of the flux.
- the CO 2 content in the flux exceeds 10.0% by mass, the amount of oxygen in the weld metal increases and the toughness decreases.
- the CO 2 content in the flux is 10.0% by mass or less, preferably 9.0% by mass or less, and more preferably 8.0% by mass or less with respect to the total mass of the flux.
- CO 2 is contained in the flux in the form of a metal carbonate such as CaCO 3 .
- CO 2 is defined as a value obtained by converting all metal carbonates into CO 2 .
- C 1.00% by mass or less (including 0% by mass)>
- C is a component contained in the flux in order to secure the room temperature strength, creep rupture strength and toughness of the weld metal.
- C does not necessarily have to be contained in the flux, and other components can improve the room temperature strength, creep breaking strength and toughness of the weld metal, but the C content in the flux is relative to the total mass of the flux. It is preferably 0.05% by mass or more, and more preferably 0.10% by mass or more.
- the toughness of the weld metal decreases.
- the C content in the flux is 1.00% by mass or less, preferably 0.80% by mass or less, and more preferably 0.50% by mass or less with respect to the total mass of the flux.
- C can be contained in the flux in the form of C alone, an alloy, a C compound, or the like.
- Ni is an element effective for improving the toughness of the weld metal, but is also a component that significantly reduces the creep rupture strength. Ni does not necessarily have to be contained in the flux, and the toughness can be improved by other components, but the Ni content in the flux is 0.01% by mass or more with respect to the total mass of the flux. It is more preferably 0.02% by mass or more, and even more preferably 0.05% by mass or more. On the other hand, when the Ni content in the flux exceeds 1.00% by mass with respect to the total mass of the flux, the creep rupture strength of the weld metal decreases.
- the Ni content in the flux is 1.00% by mass or less, preferably 0.80% by mass or less, and more preferably 0.50% by mass or less with respect to the total mass of the flux.
- Ni can be contained in the flux in the form of a simple substance of Ni or a Ni alloy such as Fe—Ni.
- Total content of Na, K and Li 0.01% by mass or more and 1.00% by mass or less> Since alkali metals such as Na, K and Li are components having an effect of improving arc stability, these alkali metals do not necessarily have to be added to the flux, but in the present embodiment, they are contained in the flux. Preferably contains at least one selected from Na, K and Li. When the total content of Na, K and Li in the flux is 0.01% by mass or more, the above effect can be obtained. Therefore, when the flux contains at least one selected from Na, K and Li, the total content of Na, K and Li in the flux is 0. It is preferably 01% by mass or more, and more preferably 0.05% by mass or more.
- the total content of Na, K and Li in the flux is 1.00% by mass or less, it is possible to prevent a decrease in the melting point of the slag and obtain an excellent bead shape. Therefore, when the flux contains at least one selected from Na, K and Li, the total content of Na, K and Li in the flux is 1. It is preferably 00% by mass or less, and more preferably 0.5% by mass or less.
- Na, K and Li can be added to the flux as a fluoride or a composite oxide, and in this embodiment, the compounds containing Na, K and Li are converted into Na, K and Li, respectively. It is specified by the specified value.
- Fe is a component having an effect of preventing seizure of slag. Fe does not necessarily have to be contained in the flux, but when it is contained, the above effect can be obtained when the Fe content in the flux is 0.10% by mass or more. Therefore, the Fe content in the flux is preferably 0.10% by mass or more, more preferably 0.30% by mass or more, based on the total mass of the flux. On the other hand, when the Fe content in the flux is 5.00% by mass or less, the solidification temperature of the slag can be adjusted, and deterioration of the bead appearance, bead shape and slag peeling can be prevented. Therefore, the Fe content in the flux is preferably 5.00% by mass or less, and more preferably 3.00% by mass or less. Fe is defined by the total amount of all Fe contained in Fe simple substance, Fe alloy, Fe oxide and the like.
- the flux according to the present embodiment preferably contains 85% by mass or more of the SiO 2 conversion values of Mn, Al, N, MgO, F, Ca, Si and Si compounds, CO 2 , C and Ni in total, 90. It is more preferably contained in an amount of 93% by mass or more, further preferably contained in an amount of 93% by mass or more, and particularly preferably contained in an amount of 95% by mass or more. Inevitable impurities are included in addition to the above components. Further, various components of, for example, an Sr compound and a Ba compound can be contained depending on the required characteristics of the weld metal.
- the raw material powder is blended so as to have the above-mentioned composition, kneaded with the binder, granulated, and fired. At that time, for example, sodium silicate or the like can be used as the binder.
- the granulation method is not particularly limited, but a method using a rolling granulation machine, an extrusion type granulation machine, or the like is preferable.
- Baking after granulation can be performed in a rotary kiln, a stationary batch furnace, a belt-type firing furnace, or the like.
- the firing temperature at that time is preferably 350 ° C. or higher, more preferably 450 ° C. or higher, from the viewpoint of changing the binder to be water-insoluble as described above.
- the upper limit is not particularly limited, but is usually 1200 ° C. or lower.
- PWHT Post Weld Heat Treatment
- PWHT condition A 1 hour at 690 ° C.
- PWHT condition B 8 hours at 685 ° C.
- PWHT condition C 6 hours at 670 ° C.
- low temperature toughness was evaluated by performing a Charpy impact test of a metallic material in accordance with JIS Z2242: 2018.
- the Charpy impact test at -30 ° C was carried out twice, the average value of the two Charpy impact values obtained was 80 J / cm 2 or more, and the minimum value of each measurement was 60 J / cm 2 .
- ⁇ excellent
- those with an average value of 54 J / cm 2 or more and a minimum value of 47 J / cm 2 or more and less than 60 J / cm 2 for each measurement were ⁇ (good).
- Table 3 below shows the welding wire, flux, welding conditions, post-welding heat treatment conditions, and evaluation results of each test used.
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Abstract
L'invention concerne un flux de soudage à l'arc submergé permettant d'obtenir de manière stable un métal de soudure présentant une excellente aptitude au soudage et d'excellentes performances mécaniques. Le présent flux de soudage à l'arc submergé, qui est utilisé pour effectuer un soudage à l'arc submergé sur une tôle d'acier à base de Cr-Mo, contient, par rapport à la masse totale du flux, 0,01 à 5,00 % en masse de Mn, 0,50 à 3,00 % en masse d'Al, plus de 0 % en masse mais pas plus de 0,50 % en masse de N, 5,0 à 40,0 % en masse de MgO, 5,0 à 12,0 % en masse de F, 9,5 à 21,5 % en masse de Ca, 11,0 à 23,0 % en masse d'Al2O3, 7,0 à 20,0 % en masse de Si et d'un composé de Si en termes de SiO2, et 3,0 à 10,0 % en masse de CO2, et ne contient pas plus de 1,00 % en masse de C et pas plus de 1,00 % en masse de Ni.
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CN202180053677.XA CN116249602A (zh) | 2020-12-23 | 2021-12-08 | 埋弧焊用焊剂 |
KR1020237010907A KR20230058481A (ko) | 2020-12-23 | 2021-12-08 | 서브머지드 아크 용접용 플럭스 |
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JP2020-213838 | 2020-12-23 | ||
JP2020213838A JP2022099821A (ja) | 2020-12-23 | 2020-12-23 | サブマージアーク溶接用フラックス |
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KR (1) | KR20230058481A (fr) |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000239816A (ja) * | 1999-02-15 | 2000-09-05 | Nippon Steel Corp | メッキ槽 |
JP2013039604A (ja) * | 2011-08-17 | 2013-02-28 | Kobe Steel Ltd | サブマージアーク溶接用ボンドフラックス及びワイヤ |
JP2013154363A (ja) * | 2012-01-27 | 2013-08-15 | Kobe Steel Ltd | 片面サブマージアーク溶接用フラックス |
JP2020131221A (ja) * | 2019-02-15 | 2020-08-31 | 日鉄溶接工業株式会社 | 高張力鋼用のサブマージアーク溶接用焼成型フラックス |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5858982A (ja) | 1981-09-10 | 1983-04-07 | Kobe Steel Ltd | Cr−Mo系低合金鋼の潜弧溶接方法 |
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2020
- 2020-12-23 JP JP2020213838A patent/JP2022099821A/ja active Pending
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2021
- 2021-12-08 CN CN202180053677.XA patent/CN116249602A/zh active Pending
- 2021-12-08 WO PCT/JP2021/045218 patent/WO2022138177A1/fr active Application Filing
- 2021-12-08 KR KR1020237010907A patent/KR20230058481A/ko unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000239816A (ja) * | 1999-02-15 | 2000-09-05 | Nippon Steel Corp | メッキ槽 |
JP2013039604A (ja) * | 2011-08-17 | 2013-02-28 | Kobe Steel Ltd | サブマージアーク溶接用ボンドフラックス及びワイヤ |
JP2013154363A (ja) * | 2012-01-27 | 2013-08-15 | Kobe Steel Ltd | 片面サブマージアーク溶接用フラックス |
JP2020131221A (ja) * | 2019-02-15 | 2020-08-31 | 日鉄溶接工業株式会社 | 高張力鋼用のサブマージアーク溶接用焼成型フラックス |
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KR20230058481A (ko) | 2023-05-03 |
CN116249602A (zh) | 2023-06-09 |
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