WO2012091413A2 - 용접이음부 저온인성 및 용접작업성이 우수한 플럭스 코어드 아크 용접 와이어 및 이를 이용한 용접이음부 - Google Patents
용접이음부 저온인성 및 용접작업성이 우수한 플럭스 코어드 아크 용접 와이어 및 이를 이용한 용접이음부 Download PDFInfo
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- WO2012091413A2 WO2012091413A2 PCT/KR2011/010160 KR2011010160W WO2012091413A2 WO 2012091413 A2 WO2012091413 A2 WO 2012091413A2 KR 2011010160 W KR2011010160 W KR 2011010160W WO 2012091413 A2 WO2012091413 A2 WO 2012091413A2
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- WIPO (PCT)
- Prior art keywords
- welded joint
- weldability
- low temperature
- welding wire
- temperature toughness
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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
- B23K35/24—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
- B23K35/3053—Fe as the principal constituent
- B23K35/3066—Fe as the principal constituent with Ni as next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3093—Fe as the principal constituent with other elements as next major constituents
-
- 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
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Definitions
- the present invention relates to a flux cored arc welding wire used in flux cored arc welding (FCAW) such as offshore structures, energy, shipbuilding, construction, bridges and pressure vessels, and a welding joint using the same.
- FCAW flux cored arc welding
- FCAW flux cored arc welding
- the low temperature toughness (low temperature stratification, CTOD) of the welded joint should be high when used in Hanram paper.
- CTOD low temperature stratification
- the welded joint formed during welding is formed by melting some of the steel as the welding material is melted to form a molten pool, and then into a convinced columnar structure. This structure is changed according to the welding material and the heat input during the welding construction, and the weld joint is coarse grain boundary ferrite, Widmanstatten ferrite, Martens along the coarse austenite grain boundary. Site and phase martensite (MA, Martensite Austenite constituent) and the like is formed there is a problem that the laminar toughness is most degraded.
- MA Martensite Austenite constituent
- welding materials such as offshore structures are alloyed elements such as Ni, Ti, and B together with addition of deoxidation, denitrification, and dehydrogenation elements in order to secure the low impact impact toughness of -40 ° C to -80 ° C.
- Hei 8-10982 and Japanese Patent Laid-Open Publication No. Hei 11-170085 are known as techniques for specifying the components of the welding material. It is difficult to secure sufficient and stable weld seam toughness of welding material because it cannot control the structure and particle size. In addition, when the welding heat input amount changes to 0.8 ⁇ 2.7kJ / mm level during the welding construction, it is inevitable that the change in the microstructure and components of the weld joint is inevitably difficult to secure the weld joint toughness.
- the flux cored arc welding uses carbon dioxide gas as a protective gas during welding, but it is more economical than using argon gas, but the arc stability is unstable, and sputtering phenomenon of fine particles splashing around during welding A large number of problems, such as a decrease in the workability of welding has emerged as a problem.
- One aspect of the present invention is to provide a flux cored arc welding wire and a weld joint using the same to reduce the spatter generated amount to improve the workability and low-temperature toughness of the weld joint.
- the present invention has a weight of 3 ⁇ 4, C: 0.01-0.1%, Si: 0.3-1.4%, Mn: 1.0-3.0%, Ti + TiO: 4.0-7.5%, Ni: 0.01-3.0%, B: 0.01-0. Contains 3 ⁇ 4,
- welded welded joints containing Y: 0.02-0.42% or REM: 0.02-0.56% and the remainder comprising Fe and unavoidable impurities provide a flux cored arc welding wire with excellent low temperature toughness and weldability.
- the present invention is a weight 3 ⁇ 4>, C: 0.01-0.1%, Si: 0.1-0.5%, Mn: 0.5-2.0%, Ti: 0.02-0.1%, Ni: 0.01-3.0%, B: 5-60ppm Including
- Y 5 to 250ppm and REM: 5 to 250ppm, including one or two, and the rest provides a weld joint having excellent low-temperature toughness and weldability including Fe and unavoidable impurities.
- FIG. 3 is a schematic diagram showing a flux cored arc welding method.
- the flux cored arc welding wire of the present invention comprises the following composition (hereinafter by weight). It is preferable to make content of carbon (C) into 0.01 to 0.1%.
- C is preferably added in an amount of 0.01% or more as an essential element in order to secure the strength of the welded joint and secure the weld hardenability. However, if the content exceeds 0.1%, the weldability greatly decreases and low temperature cracks occur in the welded joint. Easy and tough toughness is greatly reduced.
- the content of silicon (Si) is preferably 0.3 to 1.4%.
- the content of Si is less than 0.3%, the deoxidation effect in the welded joint is unsatisfactory, and the fluidity of the welded joint is lowered. If the content of Si is more than 1.4%, the transformation of MA constituent in the welded joint is promoted. It is not preferable because it lowers the low-temperature impact toughness and adversely affects the weld cracking susceptibility.
- the content of manganese (Mn) is 1.0 to 3. It is preferable to set it as.
- Mn is effective in improving deoxidation and strength in steel, and forms a solid solution in the matrix structure to solidify the matrix to strengthen the strength and toughness. To ensure, for this purpose it is preferably contained 1.0% or more. But. If it exceeds 3.0%, it is undesirable because it produces low temperature metamorphic tissue.
- the content of titanium (Ti) is 0.001 to 0.3%, and the content of Ti + Ti0 2 is preferably 4.0-7.5%.
- Ti is indispensable in the present invention because Ti is combined with 0 to form fine TiO— (Ti, B) N composite oxides in the weld joint, that is, the weld metal.
- Ni nickel
- the content of nickel (Ni) is preferably made 0.01-3.0%.
- Ni is an effective element that improves the strength and toughness of matrix by solid solution strengthening, but it is preferable to contain Ni content of 0.01% or more, but when it exceeds 3.03 ⁇ 4), the hardenability is greatly increased and high temperature crack is generated. It is not preferable because there is possibility. It is preferable to make content of boron (B) into 0.01-0.2%.
- B is an element that improves quenchability and segregates at grain boundaries and is required to be 0.01% or more to suppress grain boundary ferrite transformation, but when it exceeds 0.2%, the effect is saturated and the weld hardenability is greatly increased, which promotes martensite transformation and thus low welding temperature. It is not preferable because it lowers the occurrence of cracks and toughness. Therefore, B content is limited to 0.01 ⁇ 0.23 ⁇ 4.
- the present invention preferably comprises yttrium (Y) 0.02-0.42% or REM 0.02-0.56%.
- Y and REM act as a strong deoxidizer during welding, increase the stability of Ti oxide generated during welding and increase the number while reducing the size of the oxide, thereby acting as nucleation sites of primary delta ferrite.
- ⁇ and REM facilitate electron emission and stable oxides at high silver form stable cathode point, so that the current and voltage are constant during welding.
- the arc appears to be constant by playing a role. Therefore, it maintains a constant bead during welding and at the same time serves to ensure good welding workability by minimizing the amount of spatter generated during welding.
- Y is 0.02-0.42% or REM is 0.02-0.563 ⁇ 4).
- both Y and REM are included, it is more preferable to contain 0.19-0.65%.
- niobium (Nb) is preferably contained 0.15% or less.
- Nb is an element necessary for forming a fine precipitate of Nb :, N) at the welded joint.
- the content of the welding wire exceeds 0.153 ⁇ 4>, it promotes grain boundary ferrite formation in the welded joint and forms a hardened phase such as carbide in the welded metal to adversely affect the toughness of the welded joint. Therefore, in the design of a welding wire, it is preferable to limit the component addition limit amount of Nb to 0.15% or less. The remainder contains Fe and unavoidable impurities.
- the welding wire of the present invention can improve the workability by reducing the amount of spatter generated.
- the welding wire of the present invention satisfies the spatter amount of 2.0 mg / min or less during arc welding under the welding conditions of 280A-30V.
- the welded joint of the present invention includes the following composition (hereinafter, weight%). It is preferable to make content of carbon (C) into 0.01-0.1%.
- C is an essential element in order to secure the strength of the weld metal and to secure the weld hardenability, it is preferable to include more than 0.01%, but if the content exceeds 0.1%, the weldability is greatly reduced and the low temperature crack is easy to occur The impact toughness is greatly reduced, so it is limited to 0.01-0.1%.
- the content of silicon (Si) is preferably 0.1 to 0.5%.
- the content of manganese (Mn) is preferably 0.5 to 2.0%.
- Mn is an austenite forming element in steel, and has an effective effect of improving weld toughness.
- the Mn is dissolved in the matrix structure to improve strength and secure toughness. However, if it exceeds 2.0%, it is not preferable because it generates low temperature metamorphic tissue. It is preferable to make content of nickel (Ni) into 0.01 to 3.0%.
- Ni is an effective element that improves the strength and toughness of matrix by solid solution strengthening, but it is preferable to contain Ni content more than 3.0, but when it exceeds 3.03 ⁇ 4, the hardenability is greatly increased and there is a possibility of high silver cracking. Because it is not desirable.
- the content of titanium (Ti) is preferably set to 0.02-0.13 ⁇ 4.
- Ti of 0.02% or more is indispensable in the present invention because it forms a fine TiO_ (Ti, B) N composite oxide in the weld seam, that is, the weld metal by combining with 0 or N during welding.
- Ti Ti
- B TiO_
- a certain amount is required to obtain a fine TiO oxide, which is a nucleation site effective for forming fine needle-like ferrite in an austenite mouth.
- Ti exceeds 0.1%, coarse Ti oxides and coarse TiN precipitates are formed to lower low-temperature toughness and fracture toughness.
- the content of boron (B) is preferably 5 to 60 ppm.
- the B is an element that improves quenchability and segregates at grain boundaries and needs more than 5ppm to suppress grain boundary ferrite transformation, but when it exceeds 60ppm, the effect is saturated and weld hardenability is greatly increased, which promotes martensite transformation, resulting in welding cold cracking. And lowering toughness is not preferable. Therefore, the B content is preferably 5 to 60 pp !.
- the welded joint of the present invention includes one or two of Y: 5-250 ppm and REM: 5-250 pm.
- the ⁇ and REM are elements having a very high affinity with oxygen, and are preferentially oxidized in the weld metal of the weld joint to form a very stable oxide.
- the stable oxide is segregated at the grain boundaries in the welded joint to suppress the formation of grain ' boundary ferrites and to promote the formation of acicular ferrites.
- the content of Y and REM is preferably 5 ⁇ 250ppm.
- the welded joint of the present invention may additionally include Nb: 0.02% or less.
- Nb a precipitated phase, such as NbC, in the welded joint may precipitate and increase the strength, but when it exceeds 0.02%, the precipitated phase increases, which adversely affects low-temperature toughness, so that Nb: 0.02% or less is controlled. It is preferable.
- the remainder contains Fe and unavoidable impurities.
- the welded joint of the present invention includes a composite inclusion consisting of at least one of Ti, Mn, Y, and REM, and the composite inclusion having an average particle diameter of 0.01 to 0.1 is preferably 65% or less of the total composite inclusion.
- the composite inclusions in the weld seam act as nucleation sites of the needle-like ferrite to promote the production of needle-like ferrite.
- the fine inclusions of 0.01 ⁇ 0.1 / ⁇ of composite inclusions do not act as nucleation sites during the formation of acicular ferrite, and when these fine inclusions increase, they act as a starting point of destruction at low temperatures, thus adversely affecting low temperature fracture toughness.
- the average particle size of 0 ⁇ 01 ⁇ 0.1 ⁇ ⁇ composite inclusions are formed from 65% of the total composite inclusions.
- the composite inclusion is preferably 200 or more inclusions having an average particle diameter of 1 or more per 1 2 .
- High levels of inclusions are inevitably introduced into the weld seam to ensure electron weldability of the flux cored welding material.
- This inclusion acts as a nucleation site of the needle-like ferrite to promote the production of needle-like ferrite.
- the weld joint of the present invention has a size of 400 g / m of austenite.
- the size of the ferrite produced in the phase is linked to the size of the old austenite.
- the smaller the size of the austenite the smaller the size of the finally formed ferrite, and the larger the grain boudary.
- the grain boundary delays the phenomena destroyed during the low temperature CTOD test. Therefore, when the size of the guustenite exceeds 400 / ni, it is insufficient to serve to delay the low-temperature breakdown, it is preferably 400 / or less.
- acicular ferrite contains 86% or more as an area fraction.
- Needle ferrite is a structure that can secure both strength increase and low temperature toughness at the same time in welded joint.
- the fraction of acicular ferrite is increased, the temperature range in which toughness can be secured can be lowered. Therefore, in order to ensure excellent low-temperature toughness at -40, -60, -80 ° C, it is preferable that more than 86% of needle-like ferrite is systematically formed.
- Welded joints of the present invention is 80 o and the low-temperature impact toughness (CVN) in the C is more than 60J, - and the low temperature CT0D at 60 ° C satisfy the above 0.25 ⁇ , has excellent low-temperature toughness.
- CVN low-temperature impact toughness
- Welded joints that is, in the invention example, all have a low temperature impact toughness of 60J or more at -80 ° C, and a low temperature CTOD characteristic of 0.25 ⁇ or more at -60 ° C, it can be confirmed that it has very excellent low temperature toughness.
- Comparative Examples 1 to 3 containing no Y or REM the ratio of acicular ferrite was formed low, and it was confirmed that the coarse austenite structure was formed, so that the low temperature toughness value required by the present invention could not be reached. You can see that.
- FIG. 1 (a) when the amount of Y is insufficient, it can be seen that the needle-like layered ferrite is not formed.
- 1 (c) when Y is excessively added, it can be seen that bainite, martensite and MA tissues adversely affecting low toughness are observed.
- Figure 2 (a) is a photograph observing the composite inclusions of the invention example 1
- (b) is a graph analyzed this by Energy Dispersive X-ray Microanalysis (EDX). Through this, it can be confirmed that the composite oxide to which Y is added is formed in the welded joint of the present invention.
- EDX Energy Dispersive X-ray Microanalysis
- the amount of spatter was measured to observe an improvement in weldability.
- each flux cored arc welding wire was used for welding by the welding method as shown in FIG. 3.
- the length (arc length) and wire length (wire length) of the base material and the arc were measured four times, and are shown in Table 2, and the amount of spatter generated during each welding was measured and the results are shown in Table 5 below.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
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- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11853584.8A EP2660002B1 (en) | 2010-12-27 | 2011-12-27 | Welded joint with a superior low temperature toughness |
CN201180068533.8A CN103391829B (zh) | 2010-12-27 | 2011-12-27 | 为焊接接头提供优异低温韧性和焊接性的药芯电弧焊丝以及使用其的焊接接头 |
JP2013547335A JP5696228B2 (ja) | 2010-12-27 | 2011-12-27 | 溶接継手低温靭性及び溶接作業性に優れたフラックスコアードアーク溶接ワイヤ及びそれを利用した溶接継手 |
US13/997,725 US9492894B2 (en) | 2010-12-27 | 2011-12-27 | Flux-cored arc welding wire for providing superior toughness and weldability to a welded joint at a low temperature, and welded joint using same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2010-0136116 | 2010-12-27 | ||
KR1020100136116A KR101220618B1 (ko) | 2010-12-27 | 2010-12-27 | 용접이음부 저온인성 및 용접작업성이 우수한 플럭스 코어드 아크 용접 와이어 및 이를 이용한 용접이음부 |
Publications (2)
Publication Number | Publication Date |
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WO2012091413A2 true WO2012091413A2 (ko) | 2012-07-05 |
WO2012091413A3 WO2012091413A3 (ko) | 2012-10-04 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2011/010160 WO2012091413A2 (ko) | 2010-12-27 | 2011-12-27 | 용접이음부 저온인성 및 용접작업성이 우수한 플럭스 코어드 아크 용접 와이어 및 이를 이용한 용접이음부 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9492894B2 (ko) |
EP (1) | EP2660002B1 (ko) |
JP (1) | JP5696228B2 (ko) |
KR (1) | KR101220618B1 (ko) |
CN (1) | CN103391829B (ko) |
WO (1) | WO2012091413A2 (ko) |
Cited By (1)
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CN104607819B (zh) * | 2014-11-27 | 2017-10-31 | 宝山钢铁股份有限公司 | 一种气体保护焊丝及其制造方法 |
KR101657807B1 (ko) * | 2014-12-22 | 2016-09-20 | 주식회사 포스코 | 확산성수소량 저감특성이 우수한 용접 금속부 및 그 제조 방법 |
KR101657806B1 (ko) * | 2014-12-22 | 2016-09-20 | 주식회사 포스코 | 확산성수소량 저감특성이 우수한 용접 금속부 및 그 제조 방법 |
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CN112404796B (zh) * | 2020-10-08 | 2022-03-04 | 武汉科技大学 | 一种用于低氮无磁舰艇钢焊接的无缝金属芯药芯焊丝 |
CN113319429B (zh) * | 2021-04-29 | 2023-02-21 | 中国石油天然气集团有限公司 | 一种控制晶粒尺寸的低温增材制造用丝材及制备和应用 |
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- 2011-12-27 WO PCT/KR2011/010160 patent/WO2012091413A2/ko active Application Filing
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103045946A (zh) * | 2012-12-21 | 2013-04-17 | 江苏大学 | 一种高钛合金焊丝用钢及其制备方法 |
CN103045946B (zh) * | 2012-12-21 | 2016-06-15 | 江苏大学 | 一种高钛合金焊丝用钢及其制备方法 |
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JP5696228B2 (ja) | 2015-04-08 |
US20130284713A1 (en) | 2013-10-31 |
CN103391829B (zh) | 2016-10-26 |
EP2660002A4 (en) | 2016-10-19 |
WO2012091413A3 (ko) | 2012-10-04 |
KR20120074152A (ko) | 2012-07-05 |
KR101220618B1 (ko) | 2013-01-10 |
EP2660002A2 (en) | 2013-11-06 |
US9492894B2 (en) | 2016-11-15 |
CN103391829A (zh) | 2013-11-13 |
EP2660002B1 (en) | 2018-08-29 |
JP2014503361A (ja) | 2014-02-13 |
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