CN101157164B - Gas coverage arc welding compound core solder wire for steel with high tension - Google Patents
Gas coverage arc welding compound core solder wire for steel with high tension Download PDFInfo
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- CN101157164B CN101157164B CN2007101411720A CN200710141172A CN101157164B CN 101157164 B CN101157164 B CN 101157164B CN 2007101411720 A CN2007101411720 A CN 2007101411720A CN 200710141172 A CN200710141172 A CN 200710141172A CN 101157164 B CN101157164 B CN 101157164B
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- 238000003466 welding Methods 0.000 title claims abstract description 109
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 150000001875 compounds Chemical group 0.000 title claims description 38
- 229910000679 solder Inorganic materials 0.000 title claims description 34
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 12
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 12
- 229910001618 alkaline earth metal fluoride Inorganic materials 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 229910052796 boron Inorganic materials 0.000 claims abstract description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 229910001515 alkali metal fluoride Inorganic materials 0.000 claims abstract description 10
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 33
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 9
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 51
- 239000002184 metal Substances 0.000 abstract description 51
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 4
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 32
- 239000002893 slag Substances 0.000 description 30
- 230000000052 comparative effect Effects 0.000 description 26
- 230000036544 posture Effects 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 208000037656 Respiratory Sounds Diseases 0.000 description 8
- 238000005275 alloying Methods 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000011324 bead Substances 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000009863 impact test Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001512 metal fluoride Inorganic materials 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 238000003303 reheating Methods 0.000 description 3
- 229910002593 Fe-Ti Inorganic materials 0.000 description 2
- 229910001563 bainite Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- -1 same oxide Inorganic materials 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- 229910002551 Fe-Mn Inorganic materials 0.000 description 1
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017116 Fe—Mo Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
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
- B23K35/3053—Fe as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Abstract
A flux-cored wire for gas-shielded arc welding which contains in its total weight C: 0.02 to 0.14 wt%, Si: 0.4 to 1.1 wt%, Mn: 0.8 to 3.0 wt%, Ni: 0.2 to 3.1 wt%, Ti: no more than 0.2 wt%, either or both of Cr and Mo: 0.1 to 4.0 wt% in total, TiO2 and MgO: 5.0 to 7.2 wt% in total, N: no more than 0.0150 wt%, optionally any or all of alkali metal fluoride and oxide, alkaline earth metal fluoride and oxide, B, Al, and Mg: no more than 2.0 wt% in total, with the remainder being inevitable impurities and Fe, wherein the content of MgO and the content of Ti02 satisfy the equation: 0.05 0.22 (wherex denotes the ratio of MgO/Ti02). The flux-cored wire has good welding usability and gives weld metal superior in low-temperature toughness (at about -60 degree C) and cold crack resistance when applied to high-tensile strength steel having a proof strength greater than 620 MPa.
Description
Technical field
The present invention relates to be used in the flux-cored wire (flux-cored wire) that is suitable in the gas shield welding that yield point is the above high tension steel of 620MPa level; particularly relate to the weld metal that can access the low-temperature flexibility excellence, at weld job that all welds posture and all excellent gas coverage arc welding compound core solder wire for steel with high tension of anti-crackle.
Background technology
Be accompanied by the maximization of recent steel structure, and the lightweight of square figure implementation structure thing for this reason, has advanced the application of high tension steel on steel structure.Particularly, need steel structure that good low-temperature flexibility is arranged in the field of marine structure and pressure vessel etc., urgent to the demand of the welding material that satisfies this point.Up to now present situation is that among gas metal arc welding and hidden arc welding etc., all still there is problem in the welding material of application of cold temperature tenacity excellent but reach aspects such as being suitable for posture at operating efficiency, weld job.For this reason, just under an urgent demand high efficiency, preferred low-temperature flexibility and the whole welding posture all excellent flux-cored wire of these 3 characteristics of good weld job is arranged all.
As high performance flux-cored wire like this, developed several.As an example, open the spy that to disclose a kind of tensile strength in the flat 9-253886 communique be the gas coverage arc welding compound core solder wire that the high tension steel of 690MPa level is used, this flux-cored wire is with respect to the welding wire overall weight, regulation TiO
2, metal fluoride, C, Si, Mn, Ni, Cr, Mo, Cu, Mg, Ti and B content, with the proper range of Mg amount/metal fluoride amount ratio in the welding wire, to guarantee good weld job and long-time PWHT (welding after-baking: elevated temperature strength and low-temperature flexibility Post Weld Heat Treatment).
In addition, the spy opens in the flat 3-047695 communique and discloses a kind of being filled with TiO
2, MgO and MnO be the high tension steel flux-cored wire of the TiO 2 series solder of principal component.The prior art is passed through the content of regulation high tension steel with C, Mn, Ni and the Mo of flux-cored wire, and makes TiO
2/ MgO is than optimization and add Co and Cr, thereby guarantees good weld job and toughness.
In addition, open in the flat 8-174275 communique the spy, disclosing a kind of tensile strength is 680N/mm
2The gas coverage arc welding compound core solder wire that the above high tension steel of level is used.The prior art is by with respect to the welding wire overall weight, the proper range of the content of regulation C, Si, Mn, P, S, Ni, Cr and Mo, and the addition of regulation Ta, thereby in the widely-used scope of the low paramount heat energy of heat energy, guarantee to be equivalent to the intensity of strength of parent and good toughness, in addition in order to improve operating efficiency, and the weight rate of the metal powder in the regulation solder flux.
It is flux-cored wire for gas shielded arc welding for creep about a kind of TiO 2 series that this external spy opens in the flat 3-294093 communique; it proposes a kind of like this method; by adding MgO and metal fluoride for this flux-cored wire; to promote floating upward separation from the slag of motlten metal; reduce the oxygen amount in the weld metal, thereby improve the low-temperature flexibility of weld metal.
Yet, in each above-mentioned prior art, because can estimate low-temperature flexibility, so its purpose also is to guarantee the low-temperature flexibility about-30～-40 ℃ according to-30～-40 ℃ pendulum impact value.Yet if consider to be applied to marine structure etc. on the works that uses under the utmost point low temperature, the high tenacity that obtains in the said temperature territory is still insufficient, but need guarantee the high tenacity under the utmost point low temperature region about-60 ℃.
In addition, open flat 9-253886 communique and the spy opens in the disclosed technology of flat 8-174275 communique, openly do not add the action effect that MgO brings for TiO 2 series solder the spy.In addition, open in the flat 3-294093 communique the spy, the raising that does not also have all to weld the weld job under the posture is as problem, in addition at the TiO by same document specifies
2/ MgO ratio, the weld seam in the upward welding in the vertical position (bead) shape defect.Therefore, welding can not be by positioner (positioner) thereby is waited and launch weld when changing the large structure of posture at the scene, has the problem of the application difficult of this welding wire.
Open in the flat 3-047695 communique the spy, though be the weld job of under the lower electric current about 150A, estimating upward welding in the vertical position, with decision TiO
2The scope of/MgO ratio, but under the low current about 150A is that the effect that purpose is used flux-cored wire (FCW) is difficult to obtain to improve welding procedure efficient.On the other hand, if improve welding procedure efficient and use high electric current about 220A, then open the TiO of flat 3-047695 communique defined the spy
2Under/MgO the ratio, it is bad that weld shape can take place, and it is high perhaps to become nonweldable possibility.
So in the prior art, satisfy lower low temperature region toughness down and guarantee, all weld that good weld job, welding procedure efficient under the posture improves, the high tension steel of the anti-crackle of excellence is not obtained as yet with flux-cored wire, strong request is to its exploitation.
Summary of the invention
The present invention carries out in view of this problem points; its purpose is to provide a kind of like this gas coverage arc welding compound core solder wire for steel with high tension; in the welding of its high tension steel more than yield point 620MPa level; can about-60 ℃, obtain the weld metal of low-temperature flexibility excellence; can both guarantee good weld job in whole welding postures in addition; welding procedure efficient improves, and the anti-crackle excellence of weld metal.
Another gas coverage arc welding compound core solder wire of the present invention; it is with respect to the welding wire gross mass; contain that C:0.02～0.14 quality %, Si:0.4～1.1 quality %, Mn:0.8～3.0 quality %, Ni:0.2～3.1 quality %, Ti:0.2 quality % are following, Cr and Mo: count 0.1～4.0 quality % with total amount, and contain TiO
2And MgO counts 5.0～7.2 quality % with total amount, in addition, also containing alkali metal fluoride, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide, B, Al and Mg counts below the 2.0 quality % with total amount, in addition, N is defined in below the 0.0150 quality %, and surplus is made of unavoidable impurities and Fe.
In addition; another gas coverage arc welding compound core solder wire of the present invention; it is with respect to the welding wire gross mass; contain that C:0.02～0.14 quality %, Si:0.4～1.1 quality %, Mn:0.8～3.0 quality %, Ni:0.2～3.1 quality %, Ti:0.2 quality % are following, Cr and Mo: count 0.1～4.0 quality % with total amount, and contain TiO
2Reach MgO and count 5.0～7.2 quality % with total amount, in addition, N is defined in below the 0.0150 quality %, surplus is made of unavoidable impurities and Fe, establishes content and the TiO of MgO
2The ratio of content be x (=MgO/TiO
2) time, 0.05≤x≤0.22.
In addition; another gas coverage arc welding compound core solder wire of the present invention; it is with respect to the welding wire gross mass; contain that C:0.02～0.14 quality %, Si:0.4～1.1 quality %, Mn:0.8～3.0 quality %, Ni:0.2～3.1 quality %, Ti:0.2 quality % are following, Cr and Mo: count 0.1～4.0 quality % with total amount, and contain TiO
2And MgO counts 5.0～7.2 quality % with total amount, in addition, also containing alkali metal fluoride, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide, B, Al and Mg counts below the 2.0 quality % with total amount, in addition, N is defined in below the 0.0150 quality %, surplus is made of unavoidable impurities and Fe, establishes content and the TiO of MgO
2The ratio of content be x (=MgO/TiO
2) time, 0.05≤x≤0.22.
A kind of weld metal can be accessed according to the present invention,, the weld job and the welding procedure efficient of the excellence under whole welding postures can be accessed, anti-crackle excellence even under the low temperature about-60 ℃, also can access the good low-temperature flexibility of weld metal.
Description of drawings
Fig. 1 is the curve map of the relation of expression F (x) and vE-60 ℃.
Fig. 2 is the figure of the evaluation method of expression weld shape.
The specific embodiment
Below, specifically describe for embodiments of the present invention.Present inventors etc. improve for the low-temperature flexibility that makes gas coverage arc welding compound core solder wire for steel with high tension; and carry out various researchs for effective alloying component and slag slag former, the relation of the addition of alloying component in the gas coverage arc welding compound core solder wire for steel with high tension that its result is clear and definite and the low-temperature flexibility of weld metal.In addition, also found to guarantee the TiO of good low-temperature flexibility and weld job
2The relation of amount and MgO amount.In addition; the toughness of weld metal can be affected under the interaction of alloying component; therefore the influence of causing for the low-temperature flexibility of weld metal for the various alloying components in the gas coverage arc welding compound core solder wire for steel with high tension is investigated, and consequently draws following conclusion.
At first, in the welding of the high tension steel more than yield point 620MPa level, the tendency that flexible reduces along with the increase of the C in the gas coverage arc welding compound core solder wire for steel with high tension, Cr, Ti, Mo, particularly the influence that brings because of containing of C, Ti is big.
The interpolation of Ti thus, the solid solution Ti in the weld metal increases, and have TiC to separate out in the portion of reheating, so karyogenesis can reduce.Thus, the bainite of thick lath-shaped becomes overriding tissue, and toughness reduces greatly.Also have, the what is called portion of reheating is meant, the heat affected zone that weld metal forms under follow-up welding bead (welding bead that subsequent electrode forms) effect.In addition, because the increase of C generates island martensite body, toughness deterioration in the weld metal.
Otherwise, add the then tendency that improves of flexible of Si, Mn, Ni, particularly containing toughness that Si and Mn bring, to improve effect obvious.By increasing the content of Mn and Si, the oxygen amount in the weld metal is lowered, and can guarantee good toughness.
MgO is one of the strongest basic clinker slag former of deoxidation power at various slag slag formers in this.In TiO 2 series FCW, make the agent slag by adding MgO as slag, can reduce the oxygen concentration in the weld metal significantly, low-temperature flexibility is improved significantly.
On the other hand, the interpolation MgO in TiO 2 series solder because slag viscosity and fusing point reduce, so become protruding etc. in whole welding postures, the particularly weld shape during upward welding in the vertical position, becomes the essential factor that makes the weld job deterioration.Because the viscosity of slag and fusing point reduce, the slag of fusing is difficult to solidify and flows down easily.Thus, hanging of the motlten metal that the inhibition slag causes is very difficult, can hang when adding MgO in a large number, causes the welding difficulty.
Therefore, through found that of present inventor's etc. various researchs, with TiO
2The relation of amount and MgO amount is as MgO/TiO
2Than putting in order, effective aspect improving in low-temperature flexibility, can guarantee all to weld the balance of the best of the weld job under the posture.Here, MgO is the amount of MgO and the total that the amount of metal M g and Mg compound is converted into the value of oxide amount.Metal M g and Mg compound and the MgO deoxidation effect to weld metal equally are strong, very big effect are arranged in low-temperature flexibility aspect improving, but if add the then shape defect of weld seam in a large number, cause can't welding of causing because of hanging.For this reason, the amount of this metal M g and Mg compound is converted into oxide amount, puts in order as the MgO amount, can be clearly to low-temperature flexibility and whole factors that impact of the weld jobs under the welding postures.
Yet, only make MgO/TiO
2Than optimization, the weld job that all welds under the posture is still insufficient for estimating.The weld shape of upward welding in the vertical position and slag amount matter a lot, and stipulate that this molten slag amount is very important.
When the slag amount is very few, because can not in upward welding in the vertical position, guarantee to suppress the absolute magnitude of the slag of weld metal, so weld flush can take place or hang.Otherwise when the slag amount was too much, electric arc also was embedded in the slag of fusing, and the arc stability deterioration confirms the tendency that the generating capacity that splashes significantly increases.
Thus, guaranteeing MgO/TiO
2On the optimum balance than (mass ratio of each compound),, can guarantee all to weld the good weld job under the posture by stipulating best slag amount.In addition, by combining, can take into account low-temperature flexibility with above-mentioned alloying component optimization.
The present invention is based on above conclusion, suitableization by making the alloying component in the welding wire and the composition optimization (MgO/TiO of slag slag former
2Ratio, the slag amount), solve problem of the present invention.
Then, at gas coverage arc welding compound core solder wire for steel with high tension of the present invention, describe with regard to its composition interpolation reason and composition qualification reason thereof.Also have composition shown below, the composition under the expression welding wire total weight.High tension steel of the present invention is made of steel crust and filling flux with flux-cored wire, and composition shown below is added as the constituent of steel crust and/or the composition that contains of filling flux.
" C:0.02～0.14 quality % "
C is an extremely important composition in the intensity of weld metal is guaranteed.In the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment, when C content is lower than 0.02 quality %, can not guarantee the yield point that the 620MPa level is above.In addition, if C content surpasses 0.14%, then the intensity of weld metal increases, and the low temperature crack sensitivity significantly improves.Therefore, the C content of the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment is 0.02～0.14 quality %, more preferably 0.02～0.08 quality %.
" Si:0.4～1.1 quality % "
Si is a deoxidier, is to have the intensity of guaranteeing weld metal and the element that reduces the effect of oxygen amount.In the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment, when Si content was lower than 0.4 quality %, deoxidation was insufficient, caused pore generation and toughness bad.On the other hand, if Si content surpasses 1.1 quality %, then the viscosity of weld metal uprises, with the fusion variation of mother metal or the like weld job deterioration.Therefore the Si content of the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment is 0.4～1.1 quality %, more preferably 0.4～0.9 quality %.
" Mn:0.8～3.0 quality % "
Mn and Si use as deoxidier equally, and the toughness direction of this external raising weld metal is also effective.In the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment, when Mn content was lower than 0.8 quality %, the deoxidation deficiency caused pore generation and toughness bad.On the other hand, if Mn content surpasses 3.0 quality %, then the intensity of weld metal increases, and the low temperature crack sensitivity significantly uprises.Therefore, the Mn content of the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment is 0.8～3.0 quality %, more preferably 2.1～2.9 quality %.
Ni:0.2～3.1 quality %
Ni is an extremely important composition on the intensity of guaranteeing weld metal and toughness.In the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment, when Ni content is lower than 0.2 quality %, can not get sufficient tough property improvement effect, if Ni surpasses 1%, then heat cracking is dangerous high.Therefore, the Ni content of the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment is 0.2～3.1 quality %, more preferably 0.8～2.7 quality %.
" Ti:0.2 quality % is following "
Being added on a small quantity of Ti makes crystal grain miniaturization aspect effective, but when the interpolation of Ti surpassed 0.2 quality %, the solid solution Ti in the weld metal increased, and separate out TiC in the portion of reheating, so karyogenesis can reduce.Thus, the bainite of thick lath-shaped becomes overriding tissue, and toughness reduces greatly.Therefore, the Ti content of the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment is controlled at below the 0.2 quality %.But,, also can guarantee good low-temperature flexibility by suitableization of other alloying components even do not add Ti in the present invention.Also have, Ti adds with the Ti alloy morphology of metal Ti, Fe-Ti etc.
" N:0.0150 quality % is following "
If N surpasses 0.0150 quality %, then the amount of the N in the weld metal increases, and pore takes place, and becomes the reason of toughness deterioration in addition.Therefore N is below the 0.0150 quality %.In the gas coverage arc welding compound core solder wire for steel with high tension of present embodiment, contain
" Cr+Mo:0.1～4.0 quality % "
Cr can stably guarantee intensity, and Mo also can guarantee stable intensity in addition, adds by it in addition, can realize the miniaturization of crystal grain, is the composition that improves low-temperature flexibility.In gas coverage arc welding compound core solder wire for steel with high tension of the present invention; any one party or the both sides of containing Cr and Mo; but Cr+Mo content is (if Cr or Mo are independent interpolation then are single content; if Cr or Mo are compound interpolations then are total amounts) when being lower than 0.1 quality %, can not guarantee full intensity.On the other hand, if Cr+Mo content surpasses 4.0 quality %, then not only the intensity of weld metal increases, and toughness deterioration simultaneously also becomes the reason of low temperature crackle in addition.Therefore, the Cr+Mo content of gas coverage arc welding compound core solder wire for steel with high tension of the present invention is 0.1～4.0 quality %, more preferably 0.2～1.1 quality %.
" TiO
2+ MgO:5.0～7.2 quality % "
In gas coverage arc welding compound core solder wire for steel with high tension of the present invention, work as TiO
2+ MgO content (TiO
2And the total content of MgO) when being lower than 5.0 quality %,, thereby in upward welding in the vertical position, can not suppress weld metal, hang by slag because the slag amount is very few.On the other hand, if TiO
2+ MgO content surpasses 7.2 quality %, and then because the slag amount is too much, and electric arc also is embedded in the slag of fusing, makes the arc stability deterioration, the generating capacity that splashes increases.Therefore, TiO
2+ MgO content is 5.0～7.2 quality %.Also have, MgO is MgO and the total of the oxide conversion of metal M g, Mg compound here.TiO
2Be as TiO
2The amount that is added.
" alkali metal fluoride, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide, B, Al and Mg: count below the 2.0 quality % " with total amount
Alkali metal fluoride, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide, B, Al and Mg also can be contained, but also can not contained.But, when containing these elements or compound, will be below 2.0 quality % in total amount.Alkali metal fluoride, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide can make arc stability improve, and make the minimizing of splashing.In addition, B improves the toughness of weld metal.Al and Mg are added as deoxidier.These materials if surpass 2.0 quality %, then can hinder effect of the present invention, so the content of these materials are below 2.0 quality % in total amount.
" MgO/TiO
2Than x:0.05～0.22 "
If content and the TiO of MgO
2Ratio the x (=MgO/TiO of content
2) surpass 0.22, then in upward welding in the vertical position, as the MgO amount and the TiO of the composition that weld metal is hung
2Compare and become excessive relatively, therefore slag flows down easily in welding, is difficult to utilize slag to suppress hanging of motlten metal.Therefore, weld shape projection or hang.If x is below 0.22, then the ratio of long L of the pin of the angle welding in fillet welding and reinforcement H (by the embodiment explanation of back) is more than 10, can access good characteristic.In addition, if x below 0.10, then L/H is more than 12, can access preferred characteristic.On the other hand, because the higher limit of function F described later (x) is 15, so MgO/TiO inevitably
2Lower limit than x is 0.05.Therefore, MgO/TiO
2Than x is 0.05～0.22.Also have, MgO is MgO and the total of the oxide conversion of metal M g, Mg compound here.TiO
2Be as TiO
2The amount that is added.
“F(x)：11～15”
F (x) is given by following numerical expression 1.At this, x is aforesaid MgO/TiO
2Ratio.
[numerical expression 1]
F(x)＝37.2×x
-0.0665-30
The MgO/TiO that F (x) expression experiment is tried to achieve
2Relation than x and low-temperature flexibility.This relational expression is in the composition range of various alloys shown below and slag slag former, uses ten several welding wires, and this deposited metal that calculates by statistical disposition is at-60 ℃ pendulum impact test result and the MgO/TiO in the component of weld wire
2Relation than x.
C:0.02～0.14 quality %
Si:0.4～1.1 quality %
Mn:0.8～3.0 quality %
Ni:0.2～3.1 quality %
Cr:0.1～4.0 quality %
Mo:0.1～4.0 quality %
Ti:0～below the 0.2 quality %
Fe:84.1～90.1 quality %
Below the N:0.0150 quality %
Other composition (B, Na, F, K, Li, Al, Ca, Mg, P, S): 0.10～3.25 quality %
TiO
2: 3.5～7.8 quality %
MgO:0.1～5.0 quality %
Fig. 1 is the F (x) that tries to achieve by present inventor's experiment of expression and the curve map of the relation of-60 ℃ pendulum impact value (hereinafter referred to as vE-60 ℃).F (x) and vE-60 ℃ are in the monotone decreasing relation, when F (x)≤15, vE-60 ℃ 〉=47J, have excellent low-temperature flexibility as can be known.In addition, because MgO/TiO
2Higher limit than x is 0.22, so the lower limit of F (x) must be 11.Therefore, according to this F (x), can infer the relation of the low-temperature flexibility of the component of weld wire of gas coverage arc welding compound core solder wire for steel with high tension and weld metal with high accuracy.
If conclude,, then be that 0.05≤x≤0.22 gets final product if conclude scope of the present invention about above x and F (x).
In addition, also shown in the embodiment of back,,, also can access all good flux-cored wire in low-temperature flexibility two aspects of weld job and weld metal by satisfying aforesaid other conditions even do not satisfy the scope of this x.But, the low-temperature flexibility of weld metal is improved by satisfying the scope of this x.
The main component of the surplus of flux-cored wire of the present invention is that various Fe alloys (Fe-Si, Fe-Mn, Fe-Cr, Fe-Mo, Fe-Ti etc.) contained in steel crust, the filling flux reach the Fe next by iron powder.This Fe contains 80 quality % in the welding wire total weight.In this external flux-cored wire of the present invention, also contain alkali metal fluoride, same oxide, alkaline-earth metal fluoride, same oxide, B, Al, Mg etc.The N amount of the flux-cored wire that this test is used is below 0.0150 quality %.When this N amount was crossed 0.0150 quality %, the N amount in the weld metal increased the pore pilosity.
[embodiment]
Below, for the effect of embodiments of the invention, compare with the comparative example that departs from the scope of the present invention and describe.At first, as the welding wire of embodiments of the invention and comparative example, use the welding wire of component of weld wire shown in following table 3～table 5 (for the ratio of welding wire gross mass) and F (x) value.These outer hoops (hoop) compositions for the test weld silk are presented in the following table 6.Table 7 is the tables of comparisons that are illustrated in the outer hoop kind of using in the welding wire of embodiment and comparative example.Shown in this table 7, each welding wire shown in table 3 and the table 4 uses the outer hoop of described A of this table 6 or B.Also have, in the welding wire of embodiment and comparative example, other adding ingredients are P, S, Nb, V.
(downhand welding)
Welding condition when table 1 has shown downhand welding.With the welding condition welded H T780 steel shown in this table 1, make deposited metal.Extract tension test sheet (JIS Z3111 A1 number) and pendulum impact test sheet (JIS Z3111 A4 number) from this deposited metal, implement mechanical test.The evaluation result of 0.2% yield point that consequently, obtains and the measured value of pendulum impact value and weld job is presented in following table 8 and the table 9.In table 8 and table 9, overall merit hurdle zero is good, * be bad.
Also have, if 0.2% yield point of deposited metal is more than the 620MPa ,-60 ℃ pendulum impact value is more than the 27J, then is judged as the well-behaved of machinery.In addition, if-60 ℃ pendulum impact value is more than the 47J, then be judged as low-temperature flexibility with excellence.
[table 1]
| Welding current (A) | Arc voltage (V) | Speed of welding (mm/ branch) | Temperature between pre-hot bead (℃) | Heat energy (kJ/mm) |
| 280 | 30 | 300 | 150 | 1.7 |
Welding condition is as follows.
Protective gas: 80%Ar-20%CO
2, 25 liters/minute
Gage of wire: 1.2mm
Welding posture: downhand welding
For trying steel plate: JIS G 3128 SHY685 (thicknesss of slab: 20mm)
Groove shape: 45 ° of V
Groove gap: 12mm
(fillet welding)
Table 1 shows the welding condition of fillet welding.Press the welding condition shown in the table 2, the upwards weld job of fillet welding in the vertical position is estimated in the fillet welding in the vertical position that makes progress.Fig. 2 is the figure of the evaluation method of expression weld shape.At this moment,, use L/H, be judged as good if the value of this L/H is more than 10 in order to estimate hanging down of weld seam according to long L of the pin of angle welding and reinforcement H.Also have, the hanging of weld seam, in the time of can not welding, the value of L/H is 0.
[table 2]
| Welding current (A) | Arc voltage (V) | Speed of welding (mm/ branch) | Temperature between pre-hot bead (℃) | Heat energy (kJ/mm) |
| 220 | 24 | 150 | 10 | 2.1 |
Welding condition is as follows.
Protective gas: 80%Ar-20%CO
2, 25 liters/minute
Gage of wire: 1.2mm
Welding posture: upward welding in the vertical position
For trying steel plate: JIS G 3128 SHY685 (thicknesss of slab: 12mm)
Groove gap: 0mm
In addition, in the soldering test of this downhand welding and fillet welding, the evaluation method of low temperature crackle, heat cracking is as follows.That is, the low temperature crackle is after placing 96 hours after the welding, and the cutting bottom is confirmed having or not of defective by ultrasonic test (JIS Z 3060), magnetic-particle test (JIS G 0565).In addition, observe section, confirm the form of crackle with SEM (Scanning Electron Microscope).
In addition, tension test and pendulum impact test are according to the stretching and the impact test method of JIS Z 3111 deposited metals.
[table 3]
[table 4]
Also have, in table 3 and table 4, the detail of the numerical value described in other hurdles is the total amount of alkali metal fluoride, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide, B, Al and Mg and unavoidable impurities (P, S, V, Nb).But, the amount integral body of unavoidable impurities is 0.1 quality %, therefore, the embodiment 17 of table 4 for example, other are 1.0 quality %, the total amount of alkali metal fluoride, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide, B, Al and Mg is 0.9 quality %, and unavoidable impurities is 0.1 quality %.In addition, embodiment 20 alkali-free metal fluorides, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide, B, A1 and Mg, the numerical value on other hurdle is the amount of unavoidable impurities.
[table 5]
[table 6]
| Outer hoop kind | Fe | C | Si | Mn | Ni | Cr | Mo | Ti | N | Other |
| A | 99.3 | 0.05 | 0.05 | 0.50 | 0 | 0 | 0 | 0.02 | 0.0020 | 0.1 |
| B | 98.4 | 0.03 | 0.02 | 0.70 | 0.50 | 0.10 | 0.10 | 0 | 0.0100 | 0.1 |
[table 7]
| Outer hoop kind | Outer hoop kind | Outer hoop kind | |||
| Embodiment 1 | A | Comparative example 11 | B | Embodiment 21 | A |
| Embodiment 2 | B | Comparative example 12 | A | Comparative example 22 | A |
| Embodiment 3 | B | Comparative example 13 | A | Comparative example 23 | A |
| Embodiment 4 | A | Comparative example 14 | A | Comparative example 24 | A |
| Embodiment 5 | A | Comparative example 15 | B | Comparative example 25 | B |
| Comparative example 6 | A | Comparative example 16 | A | Comparative example 26 | A |
| Comparative example 7 | A | Embodiment 17 | A | Comparative example 27 | B |
| Outer hoop kind | Outer hoop kind | Outer hoop kind | |||
| Comparative example 8 | A | Embodiment 18 | A | Comparative example 28 | B |
| Comparative example 9 | B | Embodiment 19 | A | Comparative example 29 | A |
| Comparative example 10 | A | Embodiment 20 | B | Comparative example 30 | A |
[table 8]
[table 9]
Above-mentioned table 8 and table 9 show these result of the tests.Embodiment 1～5 and embodiment 17～21,0.2% yield point (PS) ,-60 ℃ low-temperature flexibility and comprise weld shape weld job can access excellent characteristic all.With respect to this, comparative example 6～16 and comparative example 22～30 these characteristics a certain low.
Claims (2)
1. gas coverage arc welding compound core solder wire; it is characterized in that; constitute by steel crust and filling flux; with respect to the welding wire gross mass; contain: C:0.02～0.14 quality %, Si:0.4～1.1 quality %, Mn:0.8～3.0 quality %, Ni:0.2～3.1 quality %, Ti:0.2 quality % are following, Cr and Mo: count 0.1～4.0 quality % with total amount, and contain TiO
2And MgO counts 5.0～7.2 quality % with total amount, also containing alkali metal fluoride, alkali metal oxide, alkaline-earth metal fluoride, alkaline-earth metals oxide, B, Al and Mg counts below the 2.0 quality % with total amount, and, N is limited to below the 0.0150 quality %, and surplus is unavoidable impurities and Fe.
2. gas coverage arc welding compound core solder wire according to claim 1 is characterized in that, with content and the TiO of MgO
2The ratio MgO/TiO of content
2When being decided to be x, 0.05≤x≤0.22.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006271314A JP5005309B2 (en) | 2006-10-02 | 2006-10-02 | Gas shielded arc welding flux cored wire for high strength steel |
| JP2006271314 | 2006-10-02 | ||
| JP2006-271314 | 2006-10-02 |
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| Publication Number | Publication Date |
|---|---|
| CN101157164A CN101157164A (en) | 2008-04-09 |
| CN101157164B true CN101157164B (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101411720A Active CN101157164B (en) | 2006-10-02 | 2007-08-13 | Gas coverage arc welding compound core solder wire for steel with high tension |
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| Country | Link |
|---|---|
| JP (1) | JP5005309B2 (en) |
| KR (1) | KR100922095B1 (en) |
| CN (1) | CN101157164B (en) |
| NL (1) | NL1034459C2 (en) |
| NO (1) | NO344763B1 (en) |
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| SG (1) | SG141332A1 (en) |
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| JP4209913B2 (en) * | 2006-12-15 | 2009-01-14 | 株式会社神戸製鋼所 | Flux-cored wire for gas shielded arc welding |
| JP5400472B2 (en) * | 2009-05-20 | 2014-01-29 | 株式会社神戸製鋼所 | Flux cored wire |
| JP5416605B2 (en) * | 2010-02-02 | 2014-02-12 | 株式会社神戸製鋼所 | Flux cored wire |
| JP5415998B2 (en) * | 2010-03-11 | 2014-02-12 | 株式会社神戸製鋼所 | Flux-cored wire for gas shielded arc welding |
| JP5662086B2 (en) * | 2010-09-03 | 2015-01-28 | 日鐵住金溶接工業株式会社 | Flux-cored wire for Ar-CO2 mixed gas shielded arc welding |
| CN102554494A (en) * | 2010-12-17 | 2012-07-11 | 江苏耐尔冶电集团有限公司 | Novel high wear resistant flux-cored wire |
| KR101220618B1 (en) | 2010-12-27 | 2013-01-10 | 주식회사 포스코 | Flux cored arc weld wire having excellent workability and low-temperature toughness in weld metal joint and weld metal joint using the same |
| JP5606985B2 (en) | 2011-04-08 | 2014-10-15 | 株式会社神戸製鋼所 | Weld metal with excellent resistance to hydrogen embrittlement |
| CN102181814B (en) * | 2011-05-20 | 2012-07-25 | 河海大学 | Cored wire for high amorphous content wear-resistant anticorrosive coating layer |
| CN102181813B (en) * | 2011-05-20 | 2012-09-26 | 河海大学 | Cored wire for electric arc spraying of amorphous and nano-crystalline anti-cavitation coating layer |
| CN102310301B (en) * | 2011-08-25 | 2012-07-04 | 张家港市亨昌焊材有限公司 | Flux-cored wire |
| US10316395B2 (en) | 2012-10-09 | 2019-06-11 | The Esab Group, Inc. | Low-manganese gas-shielded flux cored welding electrodes |
| JP6257193B2 (en) * | 2013-07-12 | 2018-01-10 | 株式会社神戸製鋼所 | Flux-cored wire for overlay welding |
| CN103878501A (en) * | 2013-11-29 | 2014-06-25 | 中国船舶重工集团公司第七二五研究所 | Metal-cored seamless flux-cored wire for high-strength steel |
| CN104289825A (en) * | 2014-08-27 | 2015-01-21 | 洛阳双瑞特种合金材料有限公司 | Steel seamless flux-cored wire used in mixed gas of AR and CO2 |
| KR101962050B1 (en) | 2014-10-15 | 2019-03-25 | 가부시키가이샤 고베 세이코쇼 | Flux-cored wire for gas-shielded arc welding |
| JP6382117B2 (en) | 2015-01-16 | 2018-08-29 | 日鐵住金溶接工業株式会社 | Flux-cored wire for Ar-CO2 mixed gas shielded arc welding |
| JP6437327B2 (en) | 2015-01-28 | 2018-12-12 | 日鐵住金溶接工業株式会社 | Flux-cored wire for carbon dioxide shielded arc welding |
| CN104722962B (en) * | 2015-04-10 | 2016-06-29 | 首钢总公司 | High-strength steel high-strength tenacity gas-shielded flux-cored wire |
| JP2017094360A (en) | 2015-11-25 | 2017-06-01 | 日鐵住金溶接工業株式会社 | Flux-cored wire for shield-arc welding using argon-carbon dioxide gas mixture |
| KR101795970B1 (en) * | 2016-10-11 | 2017-11-09 | 주식회사 포스코 | Cold-rolled steel sheet for flux cored wire and manufacturing the same |
| JP6832830B2 (en) * | 2017-10-25 | 2021-02-24 | 株式会社神戸製鋼所 | Flux-filled wire for submerged arc welding and materials for submerged arc welding |
| JP2020055036A (en) * | 2018-10-01 | 2020-04-09 | リンカーン グローバル，インコーポレイテッド | Additive manufacturing using aluminum-containing wire |
| KR102353730B1 (en) * | 2019-12-20 | 2022-01-19 | 주식회사 포스코 | Cold-rolled steel sheet for flux cored wire and manufacturing the same |
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- 2007-09-24 SE SE0702122A patent/SE532239C2/en not_active IP Right Cessation
- 2007-10-01 KR KR1020070098727A patent/KR100922095B1/en active IP Right Grant
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| Publication number | Publication date |
|---|---|
| JP5005309B2 (en) | 2012-08-22 |
| NL1034459C2 (en) | 2008-10-16 |
| KR100922095B1 (en) | 2009-10-16 |
| CN101157164A (en) | 2008-04-09 |
| SE0702122L (en) | 2008-04-03 |
| SG141332A1 (en) | 2008-04-28 |
| NO344763B1 (en) | 2020-04-20 |
| NL1034459A1 (en) | 2008-04-08 |
| JP2008087043A (en) | 2008-04-17 |
| SE532239C2 (en) | 2009-11-17 |
| NO20074783L (en) | 2008-04-03 |
| KR20080030936A (en) | 2008-04-07 |
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