WO2022050161A1 - Joint structure - Google Patents
Joint structure Download PDFInfo
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- WO2022050161A1 WO2022050161A1 PCT/JP2021/031301 JP2021031301W WO2022050161A1 WO 2022050161 A1 WO2022050161 A1 WO 2022050161A1 JP 2021031301 W JP2021031301 W JP 2021031301W WO 2022050161 A1 WO2022050161 A1 WO 2022050161A1
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- WIPO (PCT)
- Prior art keywords
- welding
- welded
- penetrating
- joint
- melted
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
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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
- B23K9/00—Arc welding or cutting
- B23K9/007—Spot arc welding
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
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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
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
Definitions
- the present invention relates to a bonded structure.
- Patent Document 1 a first metal material and a dissimilar material that is difficult to weld to the first metal material are superposed, and a fillering material (welding wire) is provided through a penetration portion of the dissimilar material.
- a fillering material welding wire
- the molten filler material forms a brim portion so as to cover the outer peripheral portion on the upper surface side of the penetrating portion of the dissimilar material.
- the dissimilar material and the first metal material are fixed by the compressive fixing force between the brim portion and the first metal material due to the solidification shrinkage of the filler material with respect to the first metal material.
- the present invention has been made in view of this point, and an object thereof is to suppress galvanic corrosion at a portion where a metal material and a dissimilar material overlap.
- aspects of the present disclosure are a first member made of a metal material, a second member made of a material that is difficult to weld to the first member, and a first member welded to the first member.
- the following solutions were taken for the joint structure in which the third member made of the filler metal was joined to each other.
- the second member is formed with a penetrating portion penetrating toward the first member.
- the third member is welded to the first member via the penetration portion. It is composed of a filler material that can be welded to the second member, covers the surface of the third member, and has a fourth member welded to the second member.
- the third member is welded to the first member via the penetration portion.
- the fourth member is composed of a filler material that can be welded to the second member. The fourth member covers the surface of the third member and is welded to the second member.
- the surface of the third member is covered with the fourth member, the fourth member is welded to the second member, and the gap between the second member and the third member is formed in the fourth member.
- the second aspect is, in the first aspect,
- the third member has a flange portion on the surface of the second member opposite to the first member, which projects radially outward from the penetration portion and presses the peripheral edge portion of the penetration portion. ..
- the flange portion presses the surface of the second member opposite to the first member to compress and fix the second member between the flange portion and the first member. be able to.
- the third aspect is, in the first aspect,
- the penetrating portion has a tapered portion that tapers toward the first member.
- the third member holds down the tapered portion.
- the thickness of the third member protruding from the second member can be suppressed by providing the tapered portion in the penetrating portion and solidifying the third member in a shape along the tapered portion. Thereby, the thickness of the fourth member protruding from the second member can also be suppressed.
- the fourth aspect is, in the first aspect,
- the second member has a stepped portion that opens on a surface opposite to the first member, and the penetrating portion formed on the bottom surface of the stepped portion.
- a penetration portion is formed on the bottom surface of the stepped portion of the second member.
- the third member can be arranged in the step portion to prevent the third member from popping out from the second member.
- the thickness of the fourth member protruding from the second member can be suppressed.
- the fifth aspect is the fourth aspect in the fourth aspect.
- the bottom surface of the step portion is inclined toward the penetration portion.
- the filler material of the melted third member can easily flow toward the center side of the penetrating portion.
- the sixth aspect is the first aspect.
- the second member has a stepped portion that opens in the overlapping surface with the first member, and the penetrating portion formed on the bottom surface of the stepped portion.
- the first member has a bulging portion that bulges toward the stepped portion.
- the bulging portion of the first member bulges toward the stepped portion of the second member.
- the seventh aspect is, in any one of the first to sixth aspects,
- the third member has a first joint portion welded to the first member and a second joint portion welded to the first joint portion to hold the peripheral edge portion of the penetration portion.
- the third member is formed separately in the first joint portion and the second joint portion, so that the welding method or welding conditions can be properly used in consideration of the material characteristics of the second member. Can be done.
- the short-circuit state and the arc state in which the arc spread is small due to the heat input required for melting can be obtained.
- Repeated short-circuit arc welding may be performed to form the first joint.
- the second member may be formed by performing pulse welding with a positive electrode property or alternating current, which has a large arc spread, with a low heat input that does not melt the second member. As a result, the second joint can be formed while suppressing the amount of heat input to the second member.
- the eighth aspect is in any one of the first to seventh aspects.
- the fourth member includes a central portion that covers the central portion of the surface of the third member, and an outer peripheral portion that is welded to the central portion and the second member along the outer peripheral edge of the central portion. Have.
- the fourth member is formed separately in the central portion and the outer peripheral portion.
- a central portion is formed by arc welding to cover the central portion of the surface of the third member, and then arc welding is performed along the outer peripheral edge of the central portion to form an outer peripheral portion, and the central portion and the outer peripheral portion are formed. You just have to make it familiar.
- an outer peripheral portion is formed by arc welding to cover the outer peripheral portion of the surface of the third member, and then arc welding is performed on the central portion of the surface of the third member to form the central portion, and the central portion and the outer peripheral portion are formed. You may try to make it familiar with the part.
- FIG. 1 is a side sectional view for explaining the joining structure according to the first embodiment.
- FIG. 2 is a side sectional view for explaining the joining structure according to the second embodiment.
- FIG. 3 is a side sectional view for explaining the joining structure according to the third embodiment.
- FIG. 4 is a side sectional view for explaining the joining structure according to the fourth embodiment.
- FIG. 5 is a side sectional view for explaining the joining structure according to the fifth embodiment.
- FIG. 6 is a side sectional view for explaining the joining structure according to the sixth embodiment.
- FIG. 7 is a side sectional view for explaining the joining structure according to the seventh embodiment.
- FIG. 8 is a side sectional view for explaining the joining structure according to the eighth embodiment.
- FIG. 1 shows a first member 10 made of a metal material, a second member 20 made of a material difficult to weld to the first member 10, and a first fillering material. It shows a joining structure for joining a third member 30 made of a material to each other.
- the first member 10 is a plate-shaped member made of a metal material.
- the second member 20 is a plate-shaped member made of a material that is difficult to weld to the first member 10.
- the second member 20 is superposed on the upper side of the first member 10.
- the second member 20 has a circular penetrating portion 21.
- the penetrating portion 21 is described as a circular through hole in the present embodiment, it may be an elliptical or elongated through hole.
- the third member 30 is made of a filler material which is a metal material of the same type as the first member 10.
- the metal materials of the same type are metals that can be welded to each other, and are not only the same materials but also metal materials having good weld bondability such as iron-based metal materials and non-iron-based metal materials. ..
- a similar metal material is a similar material that is compatible with welding.
- examples of the combination of the first member 10 and the third member 30 at the time of welding include the following.
- iron-based metal materials there are mild steel and mild steel, stainless steel and stainless steel, mild steel and high-tensile steel (high-strength steel), high-tensile steel and high-tensile steel, and the like.
- non-ferrous metal materials include aluminum and aluminum, aluminum and aluminum alloys, and aluminum alloys and aluminum alloys.
- the second member 20 as a dissimilar material is a material of a material different from that of the first member 10 and the third member 30 as a metal material of the same type, and the first member 10 and the third member 20 are used. It is a material that is difficult to weld to the member 30.
- the second member 20 as a dissimilar material is a non-iron-based metal such as a copper material or an aluminum material. It is a material.
- the third member 30 is welded to the first member 10 via the penetration portion 21.
- the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21. Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the gap of the portion where the second member 20 and the third member 30 overlap is closed by the fourth member 40.
- the fourth member 40 is composed of a second filler material as a filler material which is a metal material of the same type that can be welded to the second member 20.
- the fourth member 40 covers the surface of the third member 30.
- the fourth member 40 is welded to the second member 20.
- the first member 10 is a mild steel material
- the second member 20 is an aluminum material
- the third member 30 which is a filler material for the first member 10 is a mild steel material
- the second member 20 is an aluminum material
- the fourth member 40 which is a filler material for the above, will be described.
- the arc welder 1 includes a nozzle 2 and a tip 3.
- the nozzle 2 supplies a shield gas or the like to the welded portion of the object to be welded.
- the tip 3 supplies a welding current to the third member 30.
- the arc welder 1 generates an arc 5 by supplying a welding current while supplying a third member 30 to the first member 10 via the penetration portion 21.
- the third member 30 melted by arc welding is melt-bonded to the first member 10 and laminated in the penetrating portion 21. Then, the melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21 and spreads like a flange.
- the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
- the flange portion 31 projects radially outward from the penetration portion 21 on the surface of the second member 20 opposite to the first member 10 (upper surface in FIG. 1).
- the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the welding wire as the filler material, which is the third member 30 is melted and supplied to the first member 10 via the penetrating portion 21 of the second member 20, thereby ensuring the strength.
- a flange-shaped bead is formed on the second member 20 so that the second member 20 can be sandwiched by compression fixing.
- the second member 20 and the third member 30 are melt-bonded. Even if an intermetallic compound is formed by melt-bonding, there is no problem because the purpose is compression fixing by the flange shape.
- the arc welder 1 covers the surface of the third member 30 and welds the filler metal (fourth member 40) that can be welded to the second member 20 to the second member 20.
- the arc welder 1 uses a pulse waveform that alternately repeats a peak current and a base current in DC welding due to positive electrode properties and AC welding in which the polarity is switched when the filler metal is welded to the second member 20.
- pulse welding the spread of the arc 5 can be increased and the heat input to the filler metal side as a welding electrode can be increased with a low heat input that does not melt the second member 20, and the amount of welding can be increased.
- the droplets generated at the tip of the filler material are separated from the filler metal at a rate of once per pulse consisting of the peak current and the base current, and the flange portion 31 and the second member 20 side are separated. Move to withdrawal.
- DC welding based on positive electrode means that in welding by DC, the filler metal as the welding electrode is on the negative electrode side (negative electrode), and the first member 10 and the second member 20 as the base metal are on the positive electrode side.
- the heat input to the filler metal as a welding electrode is increased to perform welding.
- the heat input of the base metal is suppressed, and the melting of the filler metal as the welding electrode is promoted.
- the waveform of the peak current is set to the opposite polarity on the positive electrode side
- the waveform of the base current is set to the positive electrode side on the negative electrode side.
- the first member 10 and the second member 20 as the base material are on the negative electrode side
- the filler metal as the welding electrode is on the positive electrode side.
- the first member 10 and the second member 20 as the base metal are on the positive electrode side
- the filler metal as the welding electrode is on the negative electrode side.
- AC welding by AC that switches the polarity is performed by increasing the heat input to the first member 10 and the second member 20 as the base material at the peak current of the opposite polarity, and welding is performed with a positive electrode property base.
- Welding is performed by increasing the heat input to the filler metal as a welding electrode when an electric current is applied.
- the heat input of the base metal is suppressed as compared with the DC welding, and the melting of the filler metal as the welding electrode is promoted.
- short-circuit arc welding that repeats an arc state and a short-circuit state may be performed as a welding method that suppresses heat input to the second member 20 although the spread of the arc 5 is small. ..
- the arc welder 1 generates an arc 5 by supplying a welding current while supplying a filler material (fourth member 40) to the surface of the third member 30.
- the fourth member 40 melted by arc welding is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
- the surface of the third member 30 is covered with the fourth member 40, and the fourth member 40 is welded to the second member 20 to form a second member.
- the gap between the member 20 and the third member 30 is closed with a fourth member 40 so as to prevent moisture from entering from the outside. By doing so, it is possible to prevent moisture from entering the overlapping portion of the second member 20 and the third member 30 from the outside.
- the second welding material (fourth member 40) as the filler material of the same material as the second member 20 is used for the second welding, and the third member is welded.
- a bead having a flange shape formed by the member 30 is welded so as to cover the molten metal to form a bead larger than the flange shape size. This enables melt bonding by the fourth member 40 made of the same material as the second member 20.
- the first member 10 and the third member 30 are made of a material having a higher melting point than the second member 20 and the fourth member 40. Therefore, the interface between the third member 30 and the fourth member 40 is not melt-bonded or is slightly melt-bonded.
- Embodiment 2 >> Hereinafter, the same parts as those in the first embodiment are designated by the same reference numerals, and only the differences will be described.
- the second member 20 has a penetration portion 21.
- the penetrating portion 21 has a tapered portion 22 that tapers toward the first member 10.
- the third member 30 is melted by arc welding.
- the melted third member 30 flows along the tapered portion 22 of the penetrating portion 21 so as to gather toward the center side of the penetrating portion 21, and is melt-bonded to the first member 10.
- the melted third member 30 fills the inside of the penetrating portion 21 and spreads like a flange on the upper surface of the tapered portion 22.
- the third member 30 is provided with a flange portion 31 for pressing the tapered portion 22 of the penetrating portion 21.
- the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30.
- the fourth member 40 melted by arc welding is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
- the tapered portion 22 is provided in the penetrating portion 21, and the flange portion 31 is solidified into a shape along the tapered portion 22 so as to protrude from the second member 20.
- the thickness of the flange portion 31 can be suppressed.
- the thickness of the fourth member 40 protruding from the second member 20 can also be suppressed.
- the second member 20 has a stepped portion 25 that opens on a surface (upper surface in FIG. 3) opposite to the first member 10 and a penetrating portion formed on the bottom surface of the stepped portion 25. 21 and.
- the third member 30 is melted by arc welding.
- the melted third member 30 is melt-bonded to the first member 10.
- the melted third member 30 fills the inside of the penetrating portion 21, it flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21, that is, the bottom surface of the stepped portion 25, and spreads like a flange.
- the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
- the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30.
- the fourth member 40 melted by arc welding is melt-bonded to the stepped portion 25 of the second member 20 and laminated so as to cover the surface of the third member 30.
- the flange portion 31 of the third member 30 is arranged in the step portion 25 to prevent the flange portion 31 from popping out from the second member 20. Can be done. In addition, the thickness of the fourth member 40 protruding from the second member 20 can be suppressed.
- the second member 20 has a stepped portion 25 that opens on a surface (upper surface in FIG. 4) opposite to the first member 10 and a penetrating portion formed on the bottom surface of the stepped portion 25. 21 and.
- the bottom surface of the step portion 25 is inclined toward the penetration portion 21.
- the third member 30 is melted by arc welding.
- the melted third member 30 is melt-bonded to the first member 10.
- the melted third member 30 touches the inclined surface of the stepped portion 25, it flows toward the penetrating portion 21 along the inclined surface of the stepped portion 25 and is melt-bonded toward the first member 10.
- the melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21, that is, the bottom surface of the stepped portion 25, and has a flange shape on the inclined surface of the stepped portion 25.
- the third member 30 is provided with a flange portion 31 for pressing the inclined surface of the stepped portion 25.
- the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30.
- the fourth member 40 melted by arc welding flows along the inclined surface of the stepped portion 25. More specifically, it effectively flows so as to close the gap between the third member 30 and the second member 20 from the outside. Then, the melted fourth member 40 is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
- the melted third member 30 can easily flow toward the penetrating portion 21. ..
- the melted fourth member 40 flows along the inclined surface of the stepped portion 25, thereby effectively closing the gap between the third member 30 and the second member 20 from the outside side, and at the same time, the second member. It can be melt-bonded to the member 20 of 2.
- the flange portion 31 of the third member 30 can be arranged in the step portion 25 to prevent the flange portion 31 from popping out from the second member 20.
- the thickness of the fourth member 40 protruding from the second member 20 can be suppressed.
- the second member 20 has a stepped portion 25 that opens on the overlapping surface (lower surface in FIG. 5) with the first member 10, and a penetrating portion 21 formed on the bottom surface of the stepped portion 25. And have.
- the first member 10 has a bulging portion 15 that bulges toward the stepped portion 25.
- the bulging portion 15 is fitted in the stepped portion 25.
- the third member 30 is melted by arc welding.
- the melted third member 30 is melt-bonded to the first member 10.
- the melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21 and spreads like a flange.
- the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
- the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30.
- the fourth member 40 melted by arc welding is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
- the stepped portion 25 is fitted to the bulging portion 15. , The first member 10 and the second member 20 can be easily aligned.
- the vacant space portion on the back side of the bulging portion 15 in the first member 10 is used.
- a back wave can be sufficiently formed on the back surface of the first member 10, which is the surface opposite to the member 20 of 2.
- the strength can be further increased by so-called back wave welding, in which a weld bead is formed as if welded from the back side of the first member 10.
- Embodiment 6 As shown in FIG. 6, the second member 20 has a penetration portion 21.
- the third member 30 is melted by arc welding.
- the third member 30 has a first joint portion 35 welded to the first member 10 and a second joint portion 36 welded to the first joint portion 35 to form the flange portion 31.
- the molten third member 30 is welded to the first member 10 via the penetration portion 21, the short-circuit state and the arc in which the spread of the arc 5 is small due to the heat input required for melting. Short-circuit arc welding that repeats the state is performed to form the first joint portion 35.
- the second member 20 is subjected to pulse welding with a positive electrode property having a large spread of the arc 5 and alternating current with a low heat input that does not melt, to form the second joint portion 36.
- the flange portion 31 can be formed while suppressing the amount of heat input to the second member 20.
- the third member 30 is provided with a first joint portion 35 and a second joint portion 36.
- the first joint portion 35 is melt-bonded to the first member 10.
- the second joint portion 36 is melt-bonded to the first joint portion 35 to form a flange portion 31 that presses the peripheral edge portion of the penetration portion 21.
- the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30.
- the fourth member 40 melted by arc welding is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
- the material of the second member 20 is formed by separately forming the third member 30 into the first joint portion 35 and the second joint portion 36. Welding methods or welding conditions can be selected in consideration of the characteristics.
- the shapes of the first member 10 and the second member 20 are merely examples, and may be other combinations.
- Embodiment 7 As shown in FIG. 7, the second member 20 has a penetration portion 21.
- the third member 30 is melted by arc welding.
- the melted third member 30 is melt-bonded to the first member 10.
- the melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21 and spreads like a flange.
- the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
- the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the fourth member 40 has a central portion 41 and an outer peripheral portion 42.
- the central portion 41 covers the central portion of the surface of the third member 30.
- the outer peripheral portion 42 is welded to the central portion 41 and the second member 20 along the outer peripheral edge of the central portion 41.
- the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the central portion of the surface of the third member 30.
- the fourth member 40 melted by arc welding is laminated so as to cover the surface of the third member 30.
- the central portion 41 of the fourth member 40 is formed.
- the molten fourth member 40 is supplied to the outer peripheral edge of the central portion 41.
- the melted fourth member 40 is welded to the central portion 41 and the second member 20.
- the outer peripheral portion 42 of the fourth member 40 is formed.
- the central portion 41 is formed by arc welding to cover the central portion of the surface of the third member 30, and then along the outer peripheral edge of the central portion 41.
- the central portion 41 and the outer peripheral portion 42 can be made familiar with each other.
- Embodiment 8 As shown in FIG. 8, the second member 20 has a penetration portion 21.
- the third member 30 is melted by arc welding.
- the melted third member 30 is melt-bonded to the first member 10.
- the melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21 and spreads like a flange.
- the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
- the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
- the fourth member 40 has a central portion 41 and an outer peripheral portion 42.
- the central portion 41 covers the central portion of the surface of the third member 30.
- the outer peripheral portion 42 is welded to the central portion 41 and the second member 20 along the outer peripheral edge of the central portion 41.
- the molten fourth member 40 is supplied to the outer peripheral edge of the flange portion 31.
- the melted fourth member 40 is welded to the second member 20 along the outer peripheral edge of the flange portion 31.
- the outer peripheral portion 42 of the fourth member 40 is formed.
- the arc 5 is generated by supplying the welding current while supplying the fourth member 40 to the central portion of the surface of the third member 30.
- the fourth member 40 melted by arc welding is melt-bonded to the outer peripheral portion 42 and laminated so as to cover the surface of the third member 30. As a result, the central portion 41 of the fourth member 40 is formed.
- the outer peripheral portion 42 is formed by arc welding to cover the outer peripheral portion of the surface of the third member 30, and then the center of the surface of the third member 30.
- the central portion 41 and the outer peripheral portion 42 can be made familiar with each other.
- the embodiment may have the following configuration.
- the fillering material as the third member 30 includes a melting electrode type (consumable electrode type) and a non-melting electrode type (non-consumable electrode type). Therefore, for example, instead of the welding wire as the filler wire of the molten electrode type (consumable electrode type) used as the third member 30, the filler wire as the filler wire of the non-melting type (non-consumable electrode type). May be used to perform laser filler welding to perform laser welding on the first member 10.
- the first member 10 is irradiated with a laser to ensure the penetration of the surface of the first member 10 firmly, and then only the supplied filler wire is irradiated with the laser to obtain a third member.
- the filler wire, which is the member 30, can be melted.
- the inside of the penetrating portion 21 can be filled with the third member 30 while suppressing the heat input to the second member 20.
- the molten filler wire which is the third member 30
- the gap between the second member 20 and the third member 30 is closed so as to prevent moisture from entering from the outside, so that the second member 20 and the third member 30 can be combined with each other. It is possible to prevent moisture from entering the overlapping portion of the above.
- the third member 30 and the fourth member 40 may be formed by hybrid welding using arc welding and laser welding.
- the third member 30 may be formed by laser filler welding
- the fourth member 40 may be formed by hybrid welding, which is formed by arc welding.
- the third member 30 is formed by arc welding using a melt-type filler material
- the fourth member 40 is formed by laser filler welding using a filler wire as a non-melt-type filler material. It may be formed by hybrid welding to be formed.
- the duty which is the ratio of ON and OFF of the pulse oscillation output, which defocuses to reduce the power density of the laser and reduces the output relatively, or changes the continuous output of the laser to the pulse oscillation output.
- the duty which is the ratio of ON and OFF of the pulse oscillation output, which defocuses to reduce the power density of the laser and reduces the output relatively, or changes the continuous output of the laser to the pulse oscillation output.
- At least one or more points on the outer peripheral side of the penetrating portion 21 of the second member 20 and the upper side of the third member 30 are preheated by irradiating a laser having a reduced output such as lowering the voltage. May be good. By doing so, it is possible to improve the familiarity of the second member 20, the third member 30, and the fourth member 40 during welding. As a result, it is possible to prevent moisture from entering the overlapping portion of the second member 20, the third member 30, and the fourth member 40 from the outside.
- the present invention is extremely useful and industrially applicable because it has a highly practical effect of suppressing the occurrence of electrolytic corrosion at the portion where the metal material and the dissimilar material overlap each other. The possibility is high.
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A second member 20 is composed of a material that is difficult to weld to a first member 10. A third member 30 is welded to the first member 10 through a perforation 21 in the second member 20. A fourth member 40 is composed of a filler material that can be welded to the second member 20. The fourth member 40 covers the surface of the third member 30 and is welded to the second member 20.
Description
本発明は、接合構造に関するものである。
The present invention relates to a bonded structure.
特許文献1には、第1の金属材と、第1の金属材に対して溶接が困難な異種材とを重ね合わせた状態にし、異種材の貫通部を介して溶加材(溶接ワイヤ)をアーク溶接するようにした接合構造が開示されている。
In Patent Document 1, a first metal material and a dissimilar material that is difficult to weld to the first metal material are superposed, and a fillering material (welding wire) is provided through a penetration portion of the dissimilar material. Is disclosed as a joint structure in which the metal is arc-welded.
このとき、溶融した溶加材によって、異種材の貫通部の上面側の外周部に覆い被さるようにつば部分を形成する。これにより、第1の金属材に対する溶加材の凝固収縮によるつば部分と第1の金属材との圧縮固定力によって、異種材と第1の金属材とを固定するようにしている。
At this time, the molten filler material forms a brim portion so as to cover the outer peripheral portion on the upper surface side of the penetrating portion of the dissimilar material. As a result, the dissimilar material and the first metal material are fixed by the compressive fixing force between the brim portion and the first metal material due to the solidification shrinkage of the filler material with respect to the first metal material.
ところで、特許文献1の発明では、第3の金属材のつば部分と第2の金属材との重ね合わせ面の隙間を通って、外部から水分が侵入するおそれがある。そして、侵入した水分によって、第3の金属材のつば部分と第2の金属材とが重なり合う部分で電食が発生してしまい、接合強度が低下するおそれがある。
By the way, in the invention of Patent Document 1, there is a possibility that moisture may enter from the outside through the gap between the brim portion of the third metal material and the overlapping surface of the second metal material. Then, due to the invading moisture, electrolytic corrosion may occur at the portion where the brim portion of the third metal material and the second metal material overlap, and the bonding strength may decrease.
本発明は、かかる点に鑑みてなされたものであり、その目的は、金属材と異種材とが重なり合う部分で電食が発生するのを抑えることにある。
The present invention has been made in view of this point, and an object thereof is to suppress galvanic corrosion at a portion where a metal material and a dissimilar material overlap.
本開示の態様は、金属材で構成された第1の部材と、該第1の部材に対して溶接が困難な材料で構成された第2の部材と、該第1の部材に溶接された溶加材で構成された第3の部材とが互いに接合された接合構造を対象とし、次のような解決手段を講じた。
Aspects of the present disclosure are a first member made of a metal material, a second member made of a material that is difficult to weld to the first member, and a first member welded to the first member. The following solutions were taken for the joint structure in which the third member made of the filler metal was joined to each other.
すなわち、第1の態様は、前記第2の部材には、前記第1の部材に向かって貫通する貫通部が形成され、
前記第3の部材は、前記貫通部を介して前記第1の部材に溶接されており、
前記第2の部材に対して溶接可能な溶加材で構成され、前記第3の部材の表面を覆うとともに該第2の部材に溶接された第4の部材を備えている。 That is, in the first aspect, the second member is formed with a penetrating portion penetrating toward the first member.
The third member is welded to the first member via the penetration portion.
It is composed of a filler material that can be welded to the second member, covers the surface of the third member, and has a fourth member welded to the second member.
前記第3の部材は、前記貫通部を介して前記第1の部材に溶接されており、
前記第2の部材に対して溶接可能な溶加材で構成され、前記第3の部材の表面を覆うとともに該第2の部材に溶接された第4の部材を備えている。 That is, in the first aspect, the second member is formed with a penetrating portion penetrating toward the first member.
The third member is welded to the first member via the penetration portion.
It is composed of a filler material that can be welded to the second member, covers the surface of the third member, and has a fourth member welded to the second member.
第1の態様では、第3の部材は、貫通部を介して第1の部材に溶接される。第4の部材は、第2の部材に対して溶接可能な溶加材で構成される。第4の部材は、第3の部材の表面を覆うとともに第2の部材に溶接される。
In the first aspect, the third member is welded to the first member via the penetration portion. The fourth member is composed of a filler material that can be welded to the second member. The fourth member covers the surface of the third member and is welded to the second member.
このように、第4の部材で第3の部材の表面を覆うとともに、第4の部材を第2の部材に溶接して、第2の部材と第3の部材との隙間を第4の部材で塞ぐことで、第2の部材及び第3の部材の重ね合わせ部分に、外部から水分が侵入するのを抑えることができる。
In this way, the surface of the third member is covered with the fourth member, the fourth member is welded to the second member, and the gap between the second member and the third member is formed in the fourth member. By closing with, it is possible to suppress the invasion of moisture from the outside into the overlapped portion of the second member and the third member.
これにより、第2の部材と第3の部材とが重なり合う部分で電食が発生するのを抑え、接合強度を確保することができる。
As a result, it is possible to suppress the occurrence of electrolytic corrosion at the portion where the second member and the third member overlap, and to secure the joint strength.
第2の態様は、第1の態様において、
前記第3の部材は、前記第2の部材における前記第1の部材とは反対側の面において、該貫通部よりも径方向外方に張り出して該貫通部の周縁部を押さえるフランジ部を有する。 The second aspect is, in the first aspect,
The third member has a flange portion on the surface of the second member opposite to the first member, which projects radially outward from the penetration portion and presses the peripheral edge portion of the penetration portion. ..
前記第3の部材は、前記第2の部材における前記第1の部材とは反対側の面において、該貫通部よりも径方向外方に張り出して該貫通部の周縁部を押さえるフランジ部を有する。 The second aspect is, in the first aspect,
The third member has a flange portion on the surface of the second member opposite to the first member, which projects radially outward from the penetration portion and presses the peripheral edge portion of the penetration portion. ..
第2の態様では、フランジ部によって、第2の部材における第1の部材とは反対側の面を押さえ付けることで、フランジ部と第1の部材との間に第2の部材を圧縮固定することができる。
In the second aspect, the flange portion presses the surface of the second member opposite to the first member to compress and fix the second member between the flange portion and the first member. be able to.
これにより、第2の部材及び第3の部材の重ね合わせ部分を密着させて、外部から水分が侵入し難くなる。
As a result, the overlapped portion of the second member and the third member are brought into close contact with each other, and it becomes difficult for moisture to enter from the outside.
第3の態様は、第1の態様において、
前記貫通部は、前記第1の部材に向かって先細となるテーパー部を有し、
前記第3の部材は、前記テーパー部を押さえている。 The third aspect is, in the first aspect,
The penetrating portion has a tapered portion that tapers toward the first member.
The third member holds down the tapered portion.
前記貫通部は、前記第1の部材に向かって先細となるテーパー部を有し、
前記第3の部材は、前記テーパー部を押さえている。 The third aspect is, in the first aspect,
The penetrating portion has a tapered portion that tapers toward the first member.
The third member holds down the tapered portion.
第3の態様では、貫通部にテーパー部を設け、テーパー部に沿った形状に第3の部材を凝固させることで、第2の部材から飛び出す第3の部材の厚みを抑えることができる。これにより、第2の部材から飛び出す第4の部材の厚みも抑えることができる。
In the third aspect, the thickness of the third member protruding from the second member can be suppressed by providing the tapered portion in the penetrating portion and solidifying the third member in a shape along the tapered portion. Thereby, the thickness of the fourth member protruding from the second member can also be suppressed.
第4の態様は、第1の態様において、
前記第2の部材は、前記第1の部材とは反対側の面に開口する段差部と、該段差部の底面に形成された前記貫通部とを有する。 The fourth aspect is, in the first aspect,
The second member has a stepped portion that opens on a surface opposite to the first member, and the penetrating portion formed on the bottom surface of the stepped portion.
前記第2の部材は、前記第1の部材とは反対側の面に開口する段差部と、該段差部の底面に形成された前記貫通部とを有する。 The fourth aspect is, in the first aspect,
The second member has a stepped portion that opens on a surface opposite to the first member, and the penetrating portion formed on the bottom surface of the stepped portion.
第4の態様では、第2の部材の段差部の底面に貫通部が形成されている。これにより、第3の部材を段差部内に配置して、第2の部材から第3の部材が飛び出すのを抑えることができる。また、第2の部材から飛び出す第4の部材の厚みを抑えることができる。
In the fourth aspect, a penetration portion is formed on the bottom surface of the stepped portion of the second member. As a result, the third member can be arranged in the step portion to prevent the third member from popping out from the second member. In addition, the thickness of the fourth member protruding from the second member can be suppressed.
第5の態様は、第4の態様において、
前記段差部の底面は、前記貫通部に向かって傾斜している。 The fifth aspect is the fourth aspect in the fourth aspect.
The bottom surface of the step portion is inclined toward the penetration portion.
前記段差部の底面は、前記貫通部に向かって傾斜している。 The fifth aspect is the fourth aspect in the fourth aspect.
The bottom surface of the step portion is inclined toward the penetration portion.
第5の態様では、段差部の底面を貫通部に向かって傾斜させることで、溶融した第3の部材の溶加材が貫通部の中央側に向かって流れ易くなる。
In the fifth aspect, by inclining the bottom surface of the stepped portion toward the penetrating portion, the filler material of the melted third member can easily flow toward the center side of the penetrating portion.
第6の態様は、第1の態様において、
前記第2の部材は、前記第1の部材との重ね合わせ面に開口する段差部と、該段差部の底面に形成された前記貫通部とを有し、
前記第1の部材は、前記段差部に向かって膨出した膨出部を有する。 The sixth aspect is the first aspect.
The second member has a stepped portion that opens in the overlapping surface with the first member, and the penetrating portion formed on the bottom surface of the stepped portion.
The first member has a bulging portion that bulges toward the stepped portion.
前記第2の部材は、前記第1の部材との重ね合わせ面に開口する段差部と、該段差部の底面に形成された前記貫通部とを有し、
前記第1の部材は、前記段差部に向かって膨出した膨出部を有する。 The sixth aspect is the first aspect.
The second member has a stepped portion that opens in the overlapping surface with the first member, and the penetrating portion formed on the bottom surface of the stepped portion.
The first member has a bulging portion that bulges toward the stepped portion.
第6の態様では、第2の部材の段差部に向かって、第1の部材の膨出部が膨出している。これにより、第1の部材に第2の部材を重ね合わせる際に、膨出部に対して段差部を嵌め込むようにすれば、第1の部材及び第2の部材の位置合わせを容易に行うことができる。
In the sixth aspect, the bulging portion of the first member bulges toward the stepped portion of the second member. As a result, when the second member is superposed on the first member, if the stepped portion is fitted to the bulging portion, the positioning of the first member and the second member can be easily performed. be able to.
第7の態様は、第1乃至第6の態様のうち何れか1つにおいて、
前記第3の部材は、前記第1の部材に溶接された第1接合部と、該第1接合部に溶接されて前記貫通部の周縁部を押さえる第2接合部とを有する。 The seventh aspect is, in any one of the first to sixth aspects,
The third member has a first joint portion welded to the first member and a second joint portion welded to the first joint portion to hold the peripheral edge portion of the penetration portion.
前記第3の部材は、前記第1の部材に溶接された第1接合部と、該第1接合部に溶接されて前記貫通部の周縁部を押さえる第2接合部とを有する。 The seventh aspect is, in any one of the first to sixth aspects,
The third member has a first joint portion welded to the first member and a second joint portion welded to the first joint portion to hold the peripheral edge portion of the penetration portion.
第7の態様では、第3の部材を、第1接合部と第2接合部とに分けて形成することで、第2の部材の材料特性を考慮した溶接法又は溶接条件の使い分けをすることができる。
In the seventh aspect, the third member is formed separately in the first joint portion and the second joint portion, so that the welding method or welding conditions can be properly used in consideration of the material characteristics of the second member. Can be done.
例えば、溶融した第3の部材の溶加材を、貫通部を介して第1の部材に溶接する際には、溶け込みに必要な入熱で、アークの広がりが小さい、短絡状態とアーク状態を繰り返す短絡アーク溶接を行い、第1接合部を形成すればよい。その後、第2の部材を溶融しない程度の低入熱で、アークの広がりが大きい正極性や交流によるパルス溶接を行い、第2接合部を形成すればよい。これにより、第2の部材への入熱量を抑えながら、第2接合部を形成することができる。
For example, when the welded material of the melted third member is welded to the first member through the penetration portion, the short-circuit state and the arc state in which the arc spread is small due to the heat input required for melting can be obtained. Repeated short-circuit arc welding may be performed to form the first joint. After that, the second member may be formed by performing pulse welding with a positive electrode property or alternating current, which has a large arc spread, with a low heat input that does not melt the second member. As a result, the second joint can be formed while suppressing the amount of heat input to the second member.
第8の態様は、第1乃至第7の態様のうち何れか1つにおいて、
前記第4の部材は、前記第3の部材の表面の中央部分を覆う中央部と、該中央部の外周縁に沿って該中央部と前記第2の部材とに溶接された外周部とを有する。 The eighth aspect is in any one of the first to seventh aspects.
The fourth member includes a central portion that covers the central portion of the surface of the third member, and an outer peripheral portion that is welded to the central portion and the second member along the outer peripheral edge of the central portion. Have.
前記第4の部材は、前記第3の部材の表面の中央部分を覆う中央部と、該中央部の外周縁に沿って該中央部と前記第2の部材とに溶接された外周部とを有する。 The eighth aspect is in any one of the first to seventh aspects.
The fourth member includes a central portion that covers the central portion of the surface of the third member, and an outer peripheral portion that is welded to the central portion and the second member along the outer peripheral edge of the central portion. Have.
第8の態様では、第4の部材を、中央部と外周部とに分けて形成するようにしている。例えば、アーク溶接によって中央部を形成して第3の部材の表面の中央部分を覆い、その後、中央部の外周縁に沿ってアーク溶接を行って外周部を形成し、中央部と外周部とをなじませるようにすればよい。
In the eighth aspect, the fourth member is formed separately in the central portion and the outer peripheral portion. For example, a central portion is formed by arc welding to cover the central portion of the surface of the third member, and then arc welding is performed along the outer peripheral edge of the central portion to form an outer peripheral portion, and the central portion and the outer peripheral portion are formed. You just have to make it familiar.
また、アーク溶接によって外周部を形成して第3の部材の表面の外周部分を覆い、その後、第3の部材の表面の中央部分にアーク溶接を行って中央部を形成し、中央部と外周部とをなじませるようにしてもよい。
Further, an outer peripheral portion is formed by arc welding to cover the outer peripheral portion of the surface of the third member, and then arc welding is performed on the central portion of the surface of the third member to form the central portion, and the central portion and the outer peripheral portion are formed. You may try to make it familiar with the part.
本開示の態様によれば、金属材と異種材とが重なり合う部分で電食が発生するのを抑えることができる。
According to the aspect of the present disclosure, it is possible to suppress the occurrence of electrolytic corrosion at the portion where the metal material and the dissimilar material overlap.
以下、本発明の実施形態を図面に基づいて説明する。なお、以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本発明、その適用物或いはその用途を制限することを意図するものではない。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.
《実施形態1》
図1は、金属材で構成された第1の部材10と、第1の部材10に対して溶接が困難な材料で構成された第2の部材20と、溶加材としての第1溶加材で構成された第3の部材30とを互いに接合するための接合構造を示している。 <<Embodiment 1 >>
FIG. 1 shows afirst member 10 made of a metal material, a second member 20 made of a material difficult to weld to the first member 10, and a first fillering material. It shows a joining structure for joining a third member 30 made of a material to each other.
図1は、金属材で構成された第1の部材10と、第1の部材10に対して溶接が困難な材料で構成された第2の部材20と、溶加材としての第1溶加材で構成された第3の部材30とを互いに接合するための接合構造を示している。 <<
FIG. 1 shows a
第1の部材10は、金属材で構成された板状の部材である。
The first member 10 is a plate-shaped member made of a metal material.
第2の部材20は、第1の部材10に対して溶接が困難な材料で構成された板状の部材である。第2の部材20は、第1の部材10の上側に重ね合わされている。第2の部材20は、円形状の貫通部21を有する。
The second member 20 is a plate-shaped member made of a material that is difficult to weld to the first member 10. The second member 20 is superposed on the upper side of the first member 10. The second member 20 has a circular penetrating portion 21.
なお、本実施形態では、貫通部21を円形状の貫通孔として説明するが、楕円状や長孔状の貫通孔であってもよい。
Although the penetrating portion 21 is described as a circular through hole in the present embodiment, it may be an elliptical or elongated through hole.
第3の部材30は、第1の部材10と同種系の金属材である溶加材で構成されている。ここで、同種系の金属材とは、互いに溶接可能な金属であり、同じ材質同士だけではなく、鉄系金属材同士、非鉄系金属材同士などの溶接接合性がよい金属材のことである。言い換えると、同種系の金属材とは、溶接の相性がよい同種系の材料のことである。
The third member 30 is made of a filler material which is a metal material of the same type as the first member 10. Here, the metal materials of the same type are metals that can be welded to each other, and are not only the same materials but also metal materials having good weld bondability such as iron-based metal materials and non-iron-based metal materials. .. In other words, a similar metal material is a similar material that is compatible with welding.
具体的には、溶接時における第1の部材10と第3の部材30との組み合わせとしては、以下のものが挙げられる。例えば、鉄系金属材の組合せとしては、軟鋼と軟鋼、ステンレスとステンレス、軟鋼とハイテン(高張力鋼)、ハイテンとハイテン等がある。また、非鉄系金属材としては、アルミとアルミ、アルミとアルミ合金、アルミ合金とアルミ合金等がある。
Specifically, examples of the combination of the first member 10 and the third member 30 at the time of welding include the following. For example, as a combination of iron-based metal materials, there are mild steel and mild steel, stainless steel and stainless steel, mild steel and high-tensile steel (high-strength steel), high-tensile steel and high-tensile steel, and the like. Examples of non-ferrous metal materials include aluminum and aluminum, aluminum and aluminum alloys, and aluminum alloys and aluminum alloys.
また、異種材としての第2の部材20は、同種系の金属材としての第1の部材10及び第3の部材30とは、異なる材質の材料であり、第1の部材10及び第3の部材30に対して溶接が困難な材質である。
Further, the second member 20 as a dissimilar material is a material of a material different from that of the first member 10 and the third member 30 as a metal material of the same type, and the first member 10 and the third member 20 are used. It is a material that is difficult to weld to the member 30.
例えば、同種系の金属材としての第1の部材10及び第3の部材30を鉄系金属材にした場合、異種材としての第2の部材20は、銅材やアルミ材等の非鉄系金属材である。
For example, when the first member 10 and the third member 30 as the same type of metal material are made of an iron-based metal material, the second member 20 as a dissimilar material is a non-iron-based metal such as a copper material or an aluminum material. It is a material.
第3の部材30は、貫通部21を介して第1の部材10に溶接される。第3の部材30には、貫通部21の周縁部を押さえるフランジ部31が設けられる。そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
The third member 30 is welded to the first member 10 via the penetration portion 21. The third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21. Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
ところで、第3の部材30のフランジ部31と第2の部材20とが重なり合う部分では、外部から水分が侵入することで電食が発生するおそれがある。
By the way, in the portion where the flange portion 31 of the third member 30 and the second member 20 overlap, there is a possibility that electrolytic corrosion may occur due to the intrusion of moisture from the outside.
そこで、本実施形態では、第2の部材20及び第3の部材30が重なり合う部分の隙間を第4の部材40で塞ぐようにしている。
Therefore, in the present embodiment, the gap of the portion where the second member 20 and the third member 30 overlap is closed by the fourth member 40.
具体的に、第4の部材40は、第2の部材20と溶接可能な同種系の金属材である溶加材としての第2溶加材で構成されている。第4の部材40は、第3の部材30の表面を覆っている。第4の部材40は、第2の部材20に溶接されている。
Specifically, the fourth member 40 is composed of a second filler material as a filler material which is a metal material of the same type that can be welded to the second member 20. The fourth member 40 covers the surface of the third member 30. The fourth member 40 is welded to the second member 20.
なお、以下の説明では、第1の部材10として軟鋼材、第2の部材20としてアルミ材、第1の部材10に対する溶加材である第3の部材30として軟鋼材、第2の部材20に対する溶加材である第4の部材40としてアルミ材を用いた場合について説明する。
In the following description, the first member 10 is a mild steel material, the second member 20 is an aluminum material, the third member 30 which is a filler material for the first member 10 is a mild steel material, and the second member 20. A case where an aluminum material is used as the fourth member 40, which is a filler material for the above, will be described.
アーク溶接機1は、ノズル2と、チップ3とを備えている。ノズル2は、溶接対象物の溶接箇所にシールドガス等を供給する。チップ3は、第3の部材30に対して溶接電流を供給する。
The arc welder 1 includes a nozzle 2 and a tip 3. The nozzle 2 supplies a shield gas or the like to the welded portion of the object to be welded. The tip 3 supplies a welding current to the third member 30.
アーク溶接機1は、貫通部21を介して第1の部材10に第3の部材30を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第3の部材30は、第1の部材10に溶融結合されるとともに、貫通部21内に積層されていく。そして、溶融した第3の部材30は、貫通部21内を埋め尽くした後、貫通部21の上面側の周縁部に流れ出し、フランジ状に広がる。
The arc welder 1 generates an arc 5 by supplying a welding current while supplying a third member 30 to the first member 10 via the penetration portion 21. The third member 30 melted by arc welding is melt-bonded to the first member 10 and laminated in the penetrating portion 21. Then, the melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21 and spreads like a flange.
溶融した第3の部材30がビードとなる過程で、第3の部材30には、貫通部21の周縁部を押さえるフランジ部31が設けられる。フランジ部31は、第2の部材20における第1の部材10とは反対側の面(図1では上面)において、貫通部21よりも径方向外方に張り出している。
In the process in which the melted third member 30 becomes a bead, the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21. The flange portion 31 projects radially outward from the penetration portion 21 on the surface of the second member 20 opposite to the first member 10 (upper surface in FIG. 1).
そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
このように、第3の部材30である溶加材としての溶接ワイヤを溶融させ、第2の部材20の貫通部21を介して第1の部材10に対して供給することで、強度を確保するためのフランジ形状のビードを第2の部材20上に形成し、第2の部材20を圧縮固定にて挟み込むことができるようにしている。
In this way, the welding wire as the filler material, which is the third member 30, is melted and supplied to the first member 10 via the penetrating portion 21 of the second member 20, thereby ensuring the strength. A flange-shaped bead is formed on the second member 20 so that the second member 20 can be sandwiched by compression fixing.
なお、第2の部材20と第3の部材30とが溶融接合されている必要性はない。仮に、溶融接合することで金属間化合物が形成されても、フランジ形状による圧縮固定を目的としているため、問題はない。
It is not necessary that the second member 20 and the third member 30 are melt-bonded. Even if an intermetallic compound is formed by melt-bonding, there is no problem because the purpose is compression fixing by the flange shape.
アーク溶接機1は、第2の部材20に対して溶接可能な溶加材(第4の部材40)を、第3の部材30の表面を覆うとともに第2の部材20に溶接する。具体的に、アーク溶接機1は、溶加材を第2の部材20に溶接する際に、正極性による直流溶接や極性を切り替える交流溶接において、ピーク電流とベース電流を交互に繰り返すパルス波形よるパルス溶接を行う。パルス溶接では、第2の部材20を溶融しない程度の低入熱で、アーク5の広がりを大きくし、溶接電極としての溶加材側への入熱を多くし溶着量を増やすことができる。
The arc welder 1 covers the surface of the third member 30 and welds the filler metal (fourth member 40) that can be welded to the second member 20 to the second member 20. Specifically, the arc welder 1 uses a pulse waveform that alternately repeats a peak current and a base current in DC welding due to positive electrode properties and AC welding in which the polarity is switched when the filler metal is welded to the second member 20. Perform pulse welding. In pulse welding, the spread of the arc 5 can be increased and the heat input to the filler metal side as a welding electrode can be increased with a low heat input that does not melt the second member 20, and the amount of welding can be increased.
パルス溶接では、ピーク電流とベース電流とからなる1パルスに1回の割合で溶加材の先端に生成されている溶滴を溶加材から離脱させ、フランジ部31や第2の部材20側へ離脱移行する。
In pulse welding, the droplets generated at the tip of the filler material are separated from the filler metal at a rate of once per pulse consisting of the peak current and the base current, and the flange portion 31 and the second member 20 side are separated. Move to withdrawal.
ここで、正極性による直流溶接とは、直流による溶接において、溶接電極としての溶加材をマイナス極側(負極)にし、母材としての第1の部材10及び第2の部材20をプラス極側(正極)にすることで、溶接電極としての溶加材に対する入熱を大きくして溶接を行うものである。これにより、母材の入熱は抑えられ、溶接電極としての溶加材の溶融が促進される。
Here, DC welding based on positive electrode means that in welding by DC, the filler metal as the welding electrode is on the negative electrode side (negative electrode), and the first member 10 and the second member 20 as the base metal are on the positive electrode side. By setting it to the side (positive electrode), the heat input to the filler metal as a welding electrode is increased to perform welding. As a result, the heat input of the base metal is suppressed, and the melting of the filler metal as the welding electrode is promoted.
また、極性を切り替える交流による交流溶接では、交流による溶接において、例えばピーク電流の波形をプラス極側となる逆極性にし、ベース電流の波形をマイナス極側となる正極性とする。逆極性のピーク電流時には、母材としての第1の部材10、第2の部材20をマイナス極側、溶接電極としての溶加材をプラス極側にする。正極性のベース電流時には、母材としての第1の部材10、第2の部材20をプラス極側、溶接電極としての溶加材をマイナス極側にする。
Further, in the AC welding by switching the polarity, in the AC welding, for example, the waveform of the peak current is set to the opposite polarity on the positive electrode side, and the waveform of the base current is set to the positive electrode side on the negative electrode side. At the peak current of the opposite polarity, the first member 10 and the second member 20 as the base material are on the negative electrode side, and the filler metal as the welding electrode is on the positive electrode side. At the time of the positive electrode base current, the first member 10 and the second member 20 as the base metal are on the positive electrode side, and the filler metal as the welding electrode is on the negative electrode side.
このように、極性を切り替える交流による交流溶接とは、逆極性のピーク電流時に母材としての第1の部材10、第2の部材20に対する入熱を大きくして溶接を行い、正極性のベース電流時に溶接電極としての溶加材に対する入熱を大きくして溶接を行うものである。これにより、母材の入熱は直流溶接よりも抑えられ、溶接電極としての溶加材の溶融が促進される。
In this way, AC welding by AC that switches the polarity is performed by increasing the heat input to the first member 10 and the second member 20 as the base material at the peak current of the opposite polarity, and welding is performed with a positive electrode property base. Welding is performed by increasing the heat input to the filler metal as a welding electrode when an electric current is applied. As a result, the heat input of the base metal is suppressed as compared with the DC welding, and the melting of the filler metal as the welding electrode is promoted.
なお、正極性によるパルス溶接を行うとしたが、アーク5の広がりは小さいが第2の部材20への入熱を抑える溶接法として、アーク状態と短絡状態を繰り返す短絡アーク溶接を行ってもよい。
Although pulse welding is performed due to the positive electrode property, short-circuit arc welding that repeats an arc state and a short-circuit state may be performed as a welding method that suppresses heat input to the second member 20 although the spread of the arc 5 is small. ..
アーク溶接機1は、第3の部材30の表面に溶加材(第4の部材40)を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第4の部材40は、第2の部材20に溶融結合されるとともに、第3の部材30の表面を覆うように積層されていく。
The arc welder 1 generates an arc 5 by supplying a welding current while supplying a filler material (fourth member 40) to the surface of the third member 30. The fourth member 40 melted by arc welding is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
以上のように、本実施形態に係る接合構造では、第4の部材40で第3の部材30の表面を覆うとともに、第4の部材40を第2の部材20に溶接することで、第2の部材20と第3の部材30との隙間を、外部から水分が侵入するのを防止するように第4の部材40で塞いでいる。このようにすれば、第2の部材20及び第3の部材30の重ね合わせ部分に、外部から水分が侵入するのを抑えることができる。
As described above, in the joint structure according to the present embodiment, the surface of the third member 30 is covered with the fourth member 40, and the fourth member 40 is welded to the second member 20 to form a second member. The gap between the member 20 and the third member 30 is closed with a fourth member 40 so as to prevent moisture from entering from the outside. By doing so, it is possible to prevent moisture from entering the overlapping portion of the second member 20 and the third member 30 from the outside.
これにより、第2の部材20と第3の部材30とが重なり合う部分で電食が発生するのを抑え、接合強度を確保することができる。
As a result, it is possible to suppress the occurrence of electrolytic corrosion at the portion where the second member 20 and the third member 30 overlap, and to secure the joint strength.
このように、第3の部材30とは異なり、第2の部材20と同じ材質の溶加材としての第2溶加材(第4の部材40)により2回目の溶接を行い、第3の部材30で形成したフランジ形状のビード上に溶融金属を覆いかぶさるように溶接し、フランジ形状サイズよりも大きくビードを形成するようにしている。これにより、第2の部材20と同じ材質の第4の部材40による溶融接合を可能としている。
In this way, unlike the third member 30, the second welding material (fourth member 40) as the filler material of the same material as the second member 20 is used for the second welding, and the third member is welded. A bead having a flange shape formed by the member 30 is welded so as to cover the molten metal to form a bead larger than the flange shape size. This enables melt bonding by the fourth member 40 made of the same material as the second member 20.
また、同じ材質同士で溶融接合させることで、一般的によく使われる接着剤やシール剤、シーリング剤などの異なる工法を使用せずに、外部からの水分などの侵入を抑制し、電食を抑制することができる。
In addition, by melt-bonding the same materials together, it suppresses the intrusion of moisture from the outside and prevents electrolytic corrosion without using different construction methods such as commonly used adhesives, sealants, and sealants. It can be suppressed.
なお、基本的には、第1の部材10及び第3の部材30は、第2の部材20及び第4の部材40よりも融点が高い材質を使用するものとする。よって、第3の部材30と第4の部材40との界面は、溶融接合していないか、又は、少しだけ溶融接合している状態となる。
Basically, the first member 10 and the third member 30 are made of a material having a higher melting point than the second member 20 and the fourth member 40. Therefore, the interface between the third member 30 and the fourth member 40 is not melt-bonded or is slightly melt-bonded.
これにより、第3の部材30のフランジ形状のビード上に第4の部材40をビード形成しても、第3の部材30のフランジ形状を変形させるなどの影響もなく、第4の部材40のビードを形成することができる。
As a result, even if the fourth member 40 is beaded on the flange-shaped bead of the third member 30, there is no influence such as deformation of the flange shape of the third member 30, and the fourth member 40 A bead can be formed.
《実施形態2》
以下、前記実施形態1と同じ部分については同じ符号を付し、相違点についてのみ説明する。 <<Embodiment 2 >>
Hereinafter, the same parts as those in the first embodiment are designated by the same reference numerals, and only the differences will be described.
以下、前記実施形態1と同じ部分については同じ符号を付し、相違点についてのみ説明する。 <<
Hereinafter, the same parts as those in the first embodiment are designated by the same reference numerals, and only the differences will be described.
図2に示すように、第2の部材20は、貫通部21を有する。貫通部21は、第1の部材10に向かって先細となるテーパー部22を有する。
As shown in FIG. 2, the second member 20 has a penetration portion 21. The penetrating portion 21 has a tapered portion 22 that tapers toward the first member 10.
第3の部材30は、アーク溶接により溶融する。溶融した第3の部材30は、貫通部21のテーパー部22に沿って、貫通部21の中央側に集まるように流れ、第1の部材10に溶融結合される。
The third member 30 is melted by arc welding. The melted third member 30 flows along the tapered portion 22 of the penetrating portion 21 so as to gather toward the center side of the penetrating portion 21, and is melt-bonded to the first member 10.
そして、溶融した第3の部材30は、貫通部21内を埋め尽くすことで、テーパー部22の上面にフランジ状に広がる。
Then, the melted third member 30 fills the inside of the penetrating portion 21 and spreads like a flange on the upper surface of the tapered portion 22.
溶融した第3の部材30がビードとなる過程で、第3の部材30には、貫通部21のテーパー部22を押さえるフランジ部31が設けられる。
In the process of the melted third member 30 becoming a bead, the third member 30 is provided with a flange portion 31 for pressing the tapered portion 22 of the penetrating portion 21.
そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
その後、第3の部材30の表面に第4の部材40を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第4の部材40は、第2の部材20に溶融結合されるとともに、第3の部材30の表面を覆うように積層されていく。
After that, the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30. The fourth member 40 melted by arc welding is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
以上のように、本実施形態に係る接合構造によれば、貫通部21にテーパー部22を設け、テーパー部22に沿った形状にフランジ部31を凝固させることで、第2の部材20から飛び出すフランジ部31の厚みを抑えることができる。これにより、第2の部材20から飛び出す第4の部材40の厚みも抑えることができる。
As described above, according to the joining structure according to the present embodiment, the tapered portion 22 is provided in the penetrating portion 21, and the flange portion 31 is solidified into a shape along the tapered portion 22 so as to protrude from the second member 20. The thickness of the flange portion 31 can be suppressed. As a result, the thickness of the fourth member 40 protruding from the second member 20 can also be suppressed.
《実施形態3》
図3に示すように、第2の部材20は、第1の部材10とは反対側の面(図3では上面)に開口する段差部25と、段差部25の底面に形成された貫通部21とを有する。 <<Embodiment 3 >>
As shown in FIG. 3, thesecond member 20 has a stepped portion 25 that opens on a surface (upper surface in FIG. 3) opposite to the first member 10 and a penetrating portion formed on the bottom surface of the stepped portion 25. 21 and.
図3に示すように、第2の部材20は、第1の部材10とは反対側の面(図3では上面)に開口する段差部25と、段差部25の底面に形成された貫通部21とを有する。 <<
As shown in FIG. 3, the
第3の部材30は、アーク溶接により溶融する。溶融した第3の部材30は、第1の部材10に溶融結合される。
The third member 30 is melted by arc welding. The melted third member 30 is melt-bonded to the first member 10.
そして、溶融した第3の部材30は、貫通部21内を埋め尽くした後、貫通部21の上面側の周縁部、つまり、段差部25の底面に流れ出し、フランジ状に広がる。
Then, after the melted third member 30 fills the inside of the penetrating portion 21, it flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21, that is, the bottom surface of the stepped portion 25, and spreads like a flange.
溶融した第3の部材30がビードとなる過程で、第3の部材30には、貫通部21の周縁部を押さえるフランジ部31が設けられる。
In the process in which the melted third member 30 becomes a bead, the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
その後、第3の部材30の表面に第4の部材40を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第4の部材40は、第2の部材20の段差部25に溶融結合されるとともに、第3の部材30の表面を覆うように積層されていく。
After that, the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30. The fourth member 40 melted by arc welding is melt-bonded to the stepped portion 25 of the second member 20 and laminated so as to cover the surface of the third member 30.
以上のように、本実施形態に係る接合構造によれば、第3の部材30のフランジ部31を段差部25内に配置して、第2の部材20からフランジ部31が飛び出すのを抑えることができる。また、第2の部材20から飛び出す第4の部材40の厚みを抑えることができる。
As described above, according to the joining structure according to the present embodiment, the flange portion 31 of the third member 30 is arranged in the step portion 25 to prevent the flange portion 31 from popping out from the second member 20. Can be done. In addition, the thickness of the fourth member 40 protruding from the second member 20 can be suppressed.
《実施形態4》
図4に示すように、第2の部材20は、第1の部材10とは反対側の面(図4では上面)に開口する段差部25と、段差部25の底面に形成された貫通部21とを有する。段差部25の底面は、貫通部21に向かって傾斜している。 << Embodiment 4 >>
As shown in FIG. 4, thesecond member 20 has a stepped portion 25 that opens on a surface (upper surface in FIG. 4) opposite to the first member 10 and a penetrating portion formed on the bottom surface of the stepped portion 25. 21 and. The bottom surface of the step portion 25 is inclined toward the penetration portion 21.
図4に示すように、第2の部材20は、第1の部材10とは反対側の面(図4では上面)に開口する段差部25と、段差部25の底面に形成された貫通部21とを有する。段差部25の底面は、貫通部21に向かって傾斜している。 << Embodiment 4 >>
As shown in FIG. 4, the
第3の部材30は、アーク溶接により溶融する。溶融した第3の部材30は、第1の部材10に溶融結合される。また、溶融した第3の部材30が段差部25の傾斜面にかかる場合には、段差部25の傾斜面に沿って貫通部21に向かって流れ、第1の部材10に向かって溶融結合される。
The third member 30 is melted by arc welding. The melted third member 30 is melt-bonded to the first member 10. When the melted third member 30 touches the inclined surface of the stepped portion 25, it flows toward the penetrating portion 21 along the inclined surface of the stepped portion 25 and is melt-bonded toward the first member 10. To.
そして、溶融した第3の部材30は、貫通部21内を埋め尽くした後、貫通部21の上面側の周縁部、つまり、段差部25の底面に流れ出し、段差部25の傾斜面にフランジ状に広がる。
Then, the melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21, that is, the bottom surface of the stepped portion 25, and has a flange shape on the inclined surface of the stepped portion 25. Spread to.
溶融した第3の部材30がビードとなる過程で、第3の部材30には、段差部25の傾斜面を押さえるフランジ部31が設けられる。
In the process of the melted third member 30 becoming a bead, the third member 30 is provided with a flange portion 31 for pressing the inclined surface of the stepped portion 25.
そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
その後、第3の部材30の表面に第4の部材40を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第4の部材40は、段差部25の傾斜面に沿って流れる。より具体的には、第3の部材30と第2の部材20との外部側からの隙間を塞ぐように効果的に流れる。そして、溶融した第4の部材40は、第2の部材20に溶融結合されるとともに、第3の部材30の表面を覆うように積層されていく。
After that, the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30. The fourth member 40 melted by arc welding flows along the inclined surface of the stepped portion 25. More specifically, it effectively flows so as to close the gap between the third member 30 and the second member 20 from the outside. Then, the melted fourth member 40 is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
以上のように、本実施形態に係る接合構造によれば、段差部25の底面を貫通部21に向かって傾斜させることで、溶融した第3の部材30が貫通部21に向かって流れ易くなる。
As described above, according to the joining structure according to the present embodiment, by inclining the bottom surface of the stepped portion 25 toward the penetrating portion 21, the melted third member 30 can easily flow toward the penetrating portion 21. ..
また、溶融した第4の部材40が、段差部25の傾斜面に沿って流れることで、第3の部材30と第2の部材20との外部側からの隙間を効果的に塞ぐとともに、第2の部材20に溶融結合することができる。
Further, the melted fourth member 40 flows along the inclined surface of the stepped portion 25, thereby effectively closing the gap between the third member 30 and the second member 20 from the outside side, and at the same time, the second member. It can be melt-bonded to the member 20 of 2.
また、第3の部材30のフランジ部31を段差部25内に配置して、第2の部材20からフランジ部31が飛び出すのを抑えることができる。また、第2の部材20から飛び出す第4の部材40の厚みを抑えることができる。
Further, the flange portion 31 of the third member 30 can be arranged in the step portion 25 to prevent the flange portion 31 from popping out from the second member 20. In addition, the thickness of the fourth member 40 protruding from the second member 20 can be suppressed.
《実施形態5》
図5に示すように、第2の部材20は、第1の部材10との重ね合わせ面(図5では下面)に開口する段差部25と、段差部25の底面に形成された貫通部21とを有する。 <<Embodiment 5 >>
As shown in FIG. 5, thesecond member 20 has a stepped portion 25 that opens on the overlapping surface (lower surface in FIG. 5) with the first member 10, and a penetrating portion 21 formed on the bottom surface of the stepped portion 25. And have.
図5に示すように、第2の部材20は、第1の部材10との重ね合わせ面(図5では下面)に開口する段差部25と、段差部25の底面に形成された貫通部21とを有する。 <<
As shown in FIG. 5, the
第1の部材10は、段差部25に向かって膨出した膨出部15を有する。膨出部15は、段差部25に嵌め込まれている。
The first member 10 has a bulging portion 15 that bulges toward the stepped portion 25. The bulging portion 15 is fitted in the stepped portion 25.
第3の部材30は、アーク溶接により溶融する。溶融した第3の部材30は、第1の部材10に溶融結合される。
The third member 30 is melted by arc welding. The melted third member 30 is melt-bonded to the first member 10.
そして、溶融した第3の部材30は、貫通部21内を埋め尽くした後、貫通部21の上面側の周縁部に流れ出し、フランジ状に広がる。
Then, the melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21 and spreads like a flange.
溶融した第3の部材30がビードとなる過程で、第3の部材30には、貫通部21の周縁部を押さえるフランジ部31が設けられる。
In the process in which the melted third member 30 becomes a bead, the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
その後、第3の部材30の表面に第4の部材40を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第4の部材40は、第2の部材20に溶融結合されるとともに、第3の部材30の表面を覆うように積層されていく。
After that, the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30. The fourth member 40 melted by arc welding is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
以上のように、本実施形態に係る接合構造によれば、第1の部材10に第2の部材20を重ね合わせる際に、膨出部15に対して段差部25を嵌め込むようにすれば、第1の部材10及び第2の部材20の位置合わせを容易に行うことができる。
As described above, according to the joining structure according to the present embodiment, when the second member 20 is superposed on the first member 10, the stepped portion 25 is fitted to the bulging portion 15. , The first member 10 and the second member 20 can be easily aligned.
また、第1の部材10に対して第3の部材30をアーク溶接により溶融させる際、第1の部材10における膨出部15の裏側の空いたスペース(空間)部分を利用することで、第2の部材20に対して反対側の面である第1の部材10の裏面に裏波を十分に形成することができる。これにより、第1の部材10の裏側からも溶接したように溶接ビードを形成する、いわゆる裏波溶接によりさらに強度を高めることができる。
Further, when the third member 30 is melted by arc welding with respect to the first member 10, the vacant space portion on the back side of the bulging portion 15 in the first member 10 is used. A back wave can be sufficiently formed on the back surface of the first member 10, which is the surface opposite to the member 20 of 2. As a result, the strength can be further increased by so-called back wave welding, in which a weld bead is formed as if welded from the back side of the first member 10.
また、第1の部材10における膨出部15の裏側に空いたスペース部分を設けることにより、第1の部材10の裏面側から溶接ビードが裏波として一部張り出した場合のスペースを確保することができる。
Further, by providing an empty space portion on the back side of the bulging portion 15 of the first member 10, a space is secured when the weld bead partially overhangs as a back wave from the back surface side of the first member 10. Can be done.
《実施形態6》
図6に示すように、第2の部材20は、貫通部21を有する。 << Embodiment 6 >>
As shown in FIG. 6, thesecond member 20 has a penetration portion 21.
図6に示すように、第2の部材20は、貫通部21を有する。 << Embodiment 6 >>
As shown in FIG. 6, the
第3の部材30は、アーク溶接により溶融する。第3の部材30は、第1の部材10に溶接された第1接合部35と、第1接合部35に溶接されてフランジ部31を構成する第2接合部36とを有する。
The third member 30 is melted by arc welding. The third member 30 has a first joint portion 35 welded to the first member 10 and a second joint portion 36 welded to the first joint portion 35 to form the flange portion 31.
具体的に、溶融した第3の部材30を、貫通部21を介して第1の部材10に溶接する際には、溶け込みに必要な入熱で、アーク5の広がりが小さい、短絡状態とアーク状態を繰り返す短絡アーク溶接を行い、第1接合部35を形成する。その後、第2の部材20を溶融しない程度の低入熱で、アーク5の広がりが大きい正極性や交流によるパルス溶接を行い、第2接合部36を形成する。これにより、第2の部材20への入熱量を抑えながら、フランジ部31を形成することができる。
Specifically, when the molten third member 30 is welded to the first member 10 via the penetration portion 21, the short-circuit state and the arc in which the spread of the arc 5 is small due to the heat input required for melting. Short-circuit arc welding that repeats the state is performed to form the first joint portion 35. After that, the second member 20 is subjected to pulse welding with a positive electrode property having a large spread of the arc 5 and alternating current with a low heat input that does not melt, to form the second joint portion 36. As a result, the flange portion 31 can be formed while suppressing the amount of heat input to the second member 20.
溶融した第3の部材30がビードとなる過程で、第3の部材30には、第1接合部35と、第2接合部36とが設けられる。第1接合部35は、第1の部材10に溶融結合している。第2接合部36は、第1接合部35に溶融結合して、貫通部21の周縁部を押さえるフランジ部31を構成している。
In the process in which the melted third member 30 becomes a bead, the third member 30 is provided with a first joint portion 35 and a second joint portion 36. The first joint portion 35 is melt-bonded to the first member 10. The second joint portion 36 is melt-bonded to the first joint portion 35 to form a flange portion 31 that presses the peripheral edge portion of the penetration portion 21.
第1接合部35の上部は、中央が窪んだ形状になるように溶接することが好ましい。
It is preferable to weld the upper part of the first joint portion 35 so that the center is recessed.
これにより、第1接合部35に対して第2接合部36を溶接する際に、溶接位置が定まり易くなる。また、溶融している第2接合部36が、第1接合部35の窪んだ中央側に集まり易くなり、第2接合部36の形状をより整えることができる。
This makes it easier to determine the welding position when the second joint portion 36 is welded to the first joint portion 35. Further, the melted second joint portion 36 can easily gather on the recessed center side of the first joint portion 35, and the shape of the second joint portion 36 can be further adjusted.
そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
その後、第3の部材30の表面に第4の部材40を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第4の部材40は、第2の部材20に溶融結合されるとともに、第3の部材30の表面を覆うように積層されていく。
After that, the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the surface of the third member 30. The fourth member 40 melted by arc welding is melt-bonded to the second member 20 and laminated so as to cover the surface of the third member 30.
以上のように、本実施形態に係る接合構造によれば、第3の部材30を、第1接合部35と第2接合部36とに分けて形成することで、第2の部材20の材料特性を考慮した溶接法又は溶接条件の使い分けをすることができる。
As described above, according to the joint structure according to the present embodiment, the material of the second member 20 is formed by separately forming the third member 30 into the first joint portion 35 and the second joint portion 36. Welding methods or welding conditions can be selected in consideration of the characteristics.
なお、第1の部材10及び第2の部材20の形状は、あくまでも一例であり、その他の組み合わせであってもよい。
The shapes of the first member 10 and the second member 20 are merely examples, and may be other combinations.
《実施形態7》
図7に示すように、第2の部材20は、貫通部21を有する。 << Embodiment 7 >>
As shown in FIG. 7, thesecond member 20 has a penetration portion 21.
図7に示すように、第2の部材20は、貫通部21を有する。 << Embodiment 7 >>
As shown in FIG. 7, the
第3の部材30は、アーク溶接により溶融する。溶融した第3の部材30は、第1の部材10に溶融結合される。溶融した第3の部材30は、貫通部21内を埋め尽くした後、貫通部21の上面側の周縁部に流れ出し、フランジ状に広がる。
The third member 30 is melted by arc welding. The melted third member 30 is melt-bonded to the first member 10. The melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21 and spreads like a flange.
溶融した第3の部材30がビードとなる過程で、第3の部材30には、貫通部21の周縁部を押さえるフランジ部31が設けられる。
In the process in which the melted third member 30 becomes a bead, the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
第4の部材40は、中央部41と、外周部42とを有する。中央部41は、第3の部材30の表面の中央部分を覆っている。外周部42は、中央部41の外周縁に沿って中央部41と第2の部材20とに溶接される。
The fourth member 40 has a central portion 41 and an outer peripheral portion 42. The central portion 41 covers the central portion of the surface of the third member 30. The outer peripheral portion 42 is welded to the central portion 41 and the second member 20 along the outer peripheral edge of the central portion 41.
具体的に、第3の部材30の表面の中央部分に第4の部材40を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第4の部材40は、第3の部材30の表面を覆うように積層されていく。これにより、第4の部材40の中央部41が形成される。
Specifically, the arc 5 is generated by supplying a welding current while supplying the fourth member 40 to the central portion of the surface of the third member 30. The fourth member 40 melted by arc welding is laminated so as to cover the surface of the third member 30. As a result, the central portion 41 of the fourth member 40 is formed.
そして、中央部41の外周縁に沿ってアーク溶接機1のノズル2を旋回させることで、中央部41の外周縁に対して、溶融した第4の部材40を供給する。溶融した第4の部材40は、中央部41と第2の部材20とに溶接される。これにより、第4の部材40の外周部42が形成される。
Then, by turning the nozzle 2 of the arc welder 1 along the outer peripheral edge of the central portion 41, the molten fourth member 40 is supplied to the outer peripheral edge of the central portion 41. The melted fourth member 40 is welded to the central portion 41 and the second member 20. As a result, the outer peripheral portion 42 of the fourth member 40 is formed.
以上のように、本実施形態に係る接合構造によれば、アーク溶接によって中央部41を形成して第3の部材30の表面の中央部分を覆い、その後、中央部41の外周縁に沿ってアーク溶接を行って外周部42を形成することで、中央部41と外周部42とをなじませることができる。
As described above, according to the joining structure according to the present embodiment, the central portion 41 is formed by arc welding to cover the central portion of the surface of the third member 30, and then along the outer peripheral edge of the central portion 41. By performing arc welding to form the outer peripheral portion 42, the central portion 41 and the outer peripheral portion 42 can be made familiar with each other.
《実施形態8》
図8に示すように、第2の部材20は、貫通部21を有する。 << Embodiment 8 >>
As shown in FIG. 8, thesecond member 20 has a penetration portion 21.
図8に示すように、第2の部材20は、貫通部21を有する。 << Embodiment 8 >>
As shown in FIG. 8, the
第3の部材30は、アーク溶接により溶融する。溶融した第3の部材30は、第1の部材10に溶融結合される。溶融した第3の部材30は、貫通部21内を埋め尽くした後、貫通部21の上面側の周縁部に流れ出し、フランジ状に広がる。
The third member 30 is melted by arc welding. The melted third member 30 is melt-bonded to the first member 10. The melted third member 30 fills the inside of the penetrating portion 21 and then flows out to the peripheral edge portion on the upper surface side of the penetrating portion 21 and spreads like a flange.
溶融した第3の部材30がビードとなる過程で、第3の部材30には、貫通部21の周縁部を押さえるフランジ部31が設けられる。
In the process in which the melted third member 30 becomes a bead, the third member 30 is provided with a flange portion 31 that presses the peripheral edge portion of the penetrating portion 21.
そして、第1の部材10に対して第3の部材30が凝固収縮することで、フランジ部31と第1の部材10との間に、異種材である第2の部材20が圧縮固定される。
Then, the third member 30 solidifies and contracts with respect to the first member 10, so that the second member 20, which is a different material, is compressed and fixed between the flange portion 31 and the first member 10. ..
第4の部材40は、中央部41と、外周部42とを有する。中央部41は、第3の部材30の表面の中央部分を覆っている。外周部42は、中央部41の外周縁に沿って中央部41と第2の部材20とに溶接される。
The fourth member 40 has a central portion 41 and an outer peripheral portion 42. The central portion 41 covers the central portion of the surface of the third member 30. The outer peripheral portion 42 is welded to the central portion 41 and the second member 20 along the outer peripheral edge of the central portion 41.
具体的に、フランジ部31の外周縁に沿ってアーク溶接機1のノズル2を旋回させることで、フランジ部31の外周縁に対して、溶融した第4の部材40を供給する。溶融した第4の部材40は、フランジ部31の外周縁に沿って第2の部材20に溶接される。これにより、第4の部材40の外周部42が形成される。
Specifically, by turning the nozzle 2 of the arc welder 1 along the outer peripheral edge of the flange portion 31, the molten fourth member 40 is supplied to the outer peripheral edge of the flange portion 31. The melted fourth member 40 is welded to the second member 20 along the outer peripheral edge of the flange portion 31. As a result, the outer peripheral portion 42 of the fourth member 40 is formed.
そして、第3の部材30の表面の中央部分に第4の部材40を送給しながら溶接電流を供給することで、アーク5を発生させる。アーク溶接により溶融した第4の部材40は、外周部42に溶融結合されるとともに、第3の部材30の表面を覆うように積層されていく。これにより、第4の部材40の中央部41が形成される。
Then, the arc 5 is generated by supplying the welding current while supplying the fourth member 40 to the central portion of the surface of the third member 30. The fourth member 40 melted by arc welding is melt-bonded to the outer peripheral portion 42 and laminated so as to cover the surface of the third member 30. As a result, the central portion 41 of the fourth member 40 is formed.
以上のように、本実施形態に係る接合構造によれば、アーク溶接によって外周部42を形成して第3の部材30の表面の外周部分を覆い、その後、第3の部材30の表面の中央部分にアーク溶接を行って中央部41を形成することで、中央部41と外周部42とをなじませることができる。
As described above, according to the joining structure according to the present embodiment, the outer peripheral portion 42 is formed by arc welding to cover the outer peripheral portion of the surface of the third member 30, and then the center of the surface of the third member 30. By performing arc welding on the portion to form the central portion 41, the central portion 41 and the outer peripheral portion 42 can be made familiar with each other.
《その他の実施形態》
前記実施形態については、以下のような構成としてもよい。 << Other Embodiments >>
The embodiment may have the following configuration.
前記実施形態については、以下のような構成としてもよい。 << Other Embodiments >>
The embodiment may have the following configuration.
本実施形態では、第1の部材10に対してアーク溶接を行うようにしたが、この形態に限定するものではない。具体的に、第3の部材30としての溶加材には、溶極式(消耗電極式)と非溶極式(非消耗電極式)がある。そこで、例えば、第3の部材30として使用した溶極式(消耗電極式)の溶加材としての溶接ワイヤの代わりに、非溶極式(非消耗電極式)の溶加材としてのフィラーワイヤを用いて第1の部材10に対してレーザ溶接を行うレーザフィラー溶接を行うようにしてもよい。
In the present embodiment, arc welding is performed on the first member 10, but the present invention is not limited to this embodiment. Specifically, the fillering material as the third member 30 includes a melting electrode type (consumable electrode type) and a non-melting electrode type (non-consumable electrode type). Therefore, for example, instead of the welding wire as the filler wire of the molten electrode type (consumable electrode type) used as the third member 30, the filler wire as the filler wire of the non-melting type (non-consumable electrode type). May be used to perform laser filler welding to perform laser welding on the first member 10.
レーザフィラー溶接では、第1の部材10に対してレーザを照射して第1の部材10の表面の溶込みをしっかりと確保した後、供給されるフィラーワイヤのみにレーザを照射し、第3の部材30であるフィラーワイヤを溶融させることができる。これにより、第2の部材20への入熱を抑えながら、貫通部21内を第3の部材30で埋め尽くすことができる。
In the laser filler welding, the first member 10 is irradiated with a laser to ensure the penetration of the surface of the first member 10 firmly, and then only the supplied filler wire is irradiated with the laser to obtain a third member. The filler wire, which is the member 30, can be melted. As a result, the inside of the penetrating portion 21 can be filled with the third member 30 while suppressing the heat input to the second member 20.
また、レーザのパワー密度を下げるためにデフォーカスさせてビーム径を大きく確保することで、レーザのビーム径の外周部分を利用して、第2の部材20に予熱を与えることができる。これにより、第3の部材30である溶融したフィラーワイヤを、第2の部材20に対してなじみやすくできる。そして、この効果により、第2の部材20と第3の部材30との隙間を、外部から水分が侵入するのを防止するように塞ぐことで、第2の部材20と第3の部材30との重ね合わせ部分に、外部から水分が侵入するのを抑えることができる。
Further, by defocusing to secure a large beam diameter in order to reduce the power density of the laser, it is possible to apply preheating to the second member 20 by utilizing the outer peripheral portion of the beam diameter of the laser. As a result, the molten filler wire, which is the third member 30, can be easily adapted to the second member 20. Then, by this effect, the gap between the second member 20 and the third member 30 is closed so as to prevent moisture from entering from the outside, so that the second member 20 and the third member 30 can be combined with each other. It is possible to prevent moisture from entering the overlapping portion of the above.
また、アーク溶接とレーザ溶接を用いたハイブリット溶接で、第3の部材30を及び第4の部材40を形成しても良い。具体的に説明すると、第3の部材30をレーザフィラー溶接により形成し、第4の部材40をアーク溶接にて形成するハイブリット溶接で形成してもよい。
Further, the third member 30 and the fourth member 40 may be formed by hybrid welding using arc welding and laser welding. Specifically, the third member 30 may be formed by laser filler welding, and the fourth member 40 may be formed by hybrid welding, which is formed by arc welding.
また、第3の部材30を溶極式の溶加材を用いたアーク溶接にて形成し、第4の部材40を非溶極式の溶加材としてのフィラーワイヤを用いたレーザフィラー溶接により形成するハイブリット溶接で形成してもよい。
Further, the third member 30 is formed by arc welding using a melt-type filler material, and the fourth member 40 is formed by laser filler welding using a filler wire as a non-melt-type filler material. It may be formed by hybrid welding to be formed.
さらに、これらのレーザ溶接を組み合わせた構成としてもよい。例えば、レーザのパワー密度を下げるためにデフォーカスさせて相対的に出力を下げる、又は、レーザの連続出力をパルス発振出力に変更する、パルス発振出力のONとOFFの比率であるデューティ(Duty)を下げる等の出力を低下させたレーザを、第2の部材20の貫通部21の外周側及び第3の部材30の上部側の少なくとも一つ以上の箇所に予め照射して予熱するようにしてもよい。このようにすれば、第2の部材20、第3の部材30、及び第4の部材40の溶接時のなじみを向上させることができる。これにより、第2の部材20、第3の部材30、及び第4の部材40との重ね合わせ部分に、外部から水分が侵入するのを抑えることができる。
Further, a configuration in which these laser weldings are combined may be used. For example, the duty (Duty), which is the ratio of ON and OFF of the pulse oscillation output, which defocuses to reduce the power density of the laser and reduces the output relatively, or changes the continuous output of the laser to the pulse oscillation output. At least one or more points on the outer peripheral side of the penetrating portion 21 of the second member 20 and the upper side of the third member 30 are preheated by irradiating a laser having a reduced output such as lowering the voltage. May be good. By doing so, it is possible to improve the familiarity of the second member 20, the third member 30, and the fourth member 40 during welding. As a result, it is possible to prevent moisture from entering the overlapping portion of the second member 20, the third member 30, and the fourth member 40 from the outside.
以上説明したように、本発明は、金属材と異種材とが重なり合う部分で電食が発生するのを抑えることができるという実用性の高い効果が得られることから、きわめて有用で産業上の利用可能性は高い。
As described above, the present invention is extremely useful and industrially applicable because it has a highly practical effect of suppressing the occurrence of electrolytic corrosion at the portion where the metal material and the dissimilar material overlap each other. The possibility is high.
10 第1の部材
15 膨出部
20 第2の部材
21 貫通部
22 テーパー部
25 段差部
30 第3の部材
31 フランジ部
35 第1接合部
36 第2接合部
40 第4の部材
41 中央部
42 外周部 101st member 15 bulging part 20 2nd member 21 penetration part 22 taper part 25 step part 30 3rd member 31 flange part 35 1st joint part 36 2nd joint part 40 4th member 41 central part 42 The outer periphery
15 膨出部
20 第2の部材
21 貫通部
22 テーパー部
25 段差部
30 第3の部材
31 フランジ部
35 第1接合部
36 第2接合部
40 第4の部材
41 中央部
42 外周部 10
Claims (8)
- 金属材で構成された第1の部材と、該第1の部材に対して溶接が困難な材料で構成された第2の部材と、該第1の部材に溶接された溶加材で構成された第3の部材とが互いに接合された接合構造であって、
前記第2の部材には、前記第1の部材に向かって貫通する貫通部が形成され、
前記第3の部材は、前記貫通部を介して前記第1の部材に溶接されており、
前記第2の部材に対して溶接可能な溶加材で構成され、前記第3の部材の表面を覆うとともに該第2の部材に溶接された第4の部材を備えた接合構造。 It is composed of a first member made of a metal material, a second member made of a material that is difficult to weld to the first member, and a filler metal welded to the first member. It is a joint structure in which the third member is joined to each other.
The second member is formed with a penetrating portion penetrating toward the first member.
The third member is welded to the first member via the penetration portion.
A joining structure composed of a filler material that can be welded to the second member, covering the surface of the third member, and having a fourth member welded to the second member. - 請求項1において、
前記第3の部材は、前記第2の部材における前記第1の部材とは反対側の面において、該貫通部よりも径方向外方に張り出して該貫通部の周縁部を押さえるフランジ部を有する接合構造。 In claim 1,
The third member has a flange portion on the surface of the second member opposite to the first member, which projects radially outward from the penetration portion and presses the peripheral edge portion of the penetration portion. Joined structure. - 請求項1において、
前記貫通部は、前記第1の部材に向かって先細となるテーパー部を有し、
前記第3の部材は、前記テーパー部を押さえている接合構造。 In claim 1,
The penetrating portion has a tapered portion that tapers toward the first member.
The third member has a joint structure that holds down the tapered portion. - 請求項1において、
前記第2の部材は、前記第1の部材とは反対側の面に開口する段差部と、該段差部の底面に形成された前記貫通部とを有する接合構造。 In claim 1,
The second member has a joint structure having a stepped portion opened on a surface opposite to the first member and the penetrating portion formed on the bottom surface of the stepped portion. - 請求項4において、
前記段差部の底面は、前記貫通部に向かって傾斜している接合構造。 In claim 4,
The bottom surface of the stepped portion is a joint structure inclined toward the penetrating portion. - 請求項1において、
前記第2の部材は、前記第1の部材との重ね合わせ面に開口する段差部と、該段差部の底面に形成された前記貫通部とを有し、
前記第1の部材は、前記段差部に向かって膨出した膨出部を有する接合構造。 In claim 1,
The second member has a stepped portion that opens in the overlapping surface with the first member, and the penetrating portion formed on the bottom surface of the stepped portion.
The first member has a joint structure having a bulging portion that bulges toward the stepped portion. - 請求項1乃至6のうち何れか1つにおいて、
前記第3の部材は、前記第1の部材に溶接された第1接合部と、該第1接合部に溶接されて前記貫通部の周縁部を押さえる第2接合部とを有する接合構造。 In any one of claims 1 to 6,
The third member has a joint structure having a first joint portion welded to the first member and a second joint portion welded to the first joint portion to press the peripheral edge portion of the penetration portion. - 請求項1乃至7のうち何れか1つにおいて、
前記第4の部材は、前記第3の部材の表面の中央部分を覆う中央部と、該中央部の外周縁に沿って該中央部と前記第2の部材とに溶接された外周部とを有する接合構造。 In any one of claims 1 to 7,
The fourth member has a central portion that covers the central portion of the surface of the third member, and an outer peripheral portion that is welded to the central portion and the second member along the outer peripheral edge of the central portion. Welding structure to have.
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JPS52114446A (en) * | 1976-03-22 | 1977-09-26 | Fuji Heavy Ind Ltd | Method of joining members of different materials |
JPS55109570A (en) * | 1979-02-15 | 1980-08-23 | Mitsubishi Heavy Ind Ltd | Boundary corrosion preventing method |
JPS63110540U (en) * | 1986-06-19 | 1988-07-15 | ||
WO2018030272A1 (en) * | 2016-08-09 | 2018-02-15 | パナソニックIpマネジメント株式会社 | Junction structure |
WO2019086698A1 (en) * | 2017-11-06 | 2019-05-09 | Hempel A/S | A method for improving a fluid dynamic profile of a marine vessel, a marine vessel having an improved fluid dynamic profile, and a coating system for improving the fluid dynamic profile |
JP2019150831A (en) * | 2018-02-28 | 2019-09-12 | 株式会社神戸製鋼所 | Arc welding method for different material joint |
JP2020062668A (en) * | 2018-10-18 | 2020-04-23 | 株式会社神戸製鋼所 | Arc stud weld method for jointing different materials, joint auxiliary member, and different materials weld joint |
-
2021
- 2021-08-26 WO PCT/JP2021/031301 patent/WO2022050161A1/en active Application Filing
- 2021-08-26 CN CN202180056744.3A patent/CN116096522A/en active Pending
- 2021-08-26 JP JP2022546273A patent/JPWO2022050161A1/ja active Pending
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JPS52114446A (en) * | 1976-03-22 | 1977-09-26 | Fuji Heavy Ind Ltd | Method of joining members of different materials |
JPS55109570A (en) * | 1979-02-15 | 1980-08-23 | Mitsubishi Heavy Ind Ltd | Boundary corrosion preventing method |
JPS63110540U (en) * | 1986-06-19 | 1988-07-15 | ||
WO2018030272A1 (en) * | 2016-08-09 | 2018-02-15 | パナソニックIpマネジメント株式会社 | Junction structure |
WO2019086698A1 (en) * | 2017-11-06 | 2019-05-09 | Hempel A/S | A method for improving a fluid dynamic profile of a marine vessel, a marine vessel having an improved fluid dynamic profile, and a coating system for improving the fluid dynamic profile |
JP2019150831A (en) * | 2018-02-28 | 2019-09-12 | 株式会社神戸製鋼所 | Arc welding method for different material joint |
JP2020062668A (en) * | 2018-10-18 | 2020-04-23 | 株式会社神戸製鋼所 | Arc stud weld method for jointing different materials, joint auxiliary member, and different materials weld joint |
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