WO2009048017A1 - T型継手の溶接方法 - Google Patents
T型継手の溶接方法 Download PDFInfo
- Publication number
- WO2009048017A1 WO2009048017A1 PCT/JP2008/067989 JP2008067989W WO2009048017A1 WO 2009048017 A1 WO2009048017 A1 WO 2009048017A1 JP 2008067989 W JP2008067989 W JP 2008067989W WO 2009048017 A1 WO2009048017 A1 WO 2009048017A1
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- WO
- WIPO (PCT)
- Prior art keywords
- plate
- welding
- lower plate
- arc
- groove
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
Definitions
- the present invention relates to a method for welding a T-shaped joint that is preferably used for welding a plate and a standing plate arranged in a ⁇ -shape.
- the hollow structure used in booms, arms, etc., which constitute hydraulic excavator working devices has a square cross-sectional shape by, for example, combining and welding two T-shaped joints. It is formed as a strong box-shaped structure.
- the T type joint usually has a vertical plate on the upper surface side of the lower plate.
- a bead is formed in advance on the upper surface of the lower plate, and a groove is formed on the surface side of the vertical plate.
- the melted metal is melted between the lower plate and the upright plate from the surface side of the groove.
- a welding operation for forming a back bead on the upper surface of the lower plate is performed.
- a work plate material assembling process
- a welding work is performed by melting the back bead formed on the lower plate and the back side of the groove provided on the standing plate.
- the first welding process, the plate material assembling process, and the second welding process are generally performed at different work places. For this reason, when performing the first welding process, the plate material assembling process, and the second welding process as in the prior art, it is necessary to go back and forth between different work locations many times. There is a problem that the workability when forming the joint is reduced.
- the shape of the weld bead formed in the second welding process is determined according to the position of the standing plate with respect to the back bead formed in advance on the lower plate.
- the plate assembling process it is necessary to strictly position the upright plate with respect to the back bead formed in advance on the lower plate, and the problem is that the workability of this positioning work is reduced. is there. Disclosure of the invention
- the present invention has been made in view of the above-described problems of the prior art, and can form a good back wave bead on the back side of the groove provided on the standing plate, and the lower plate and the standing plate.
- the purpose of this is to provide a welding method for T-shaped joints that can improve the workability when welding is arranged in a T-shape.
- the present invention is applied to a welding method for a T-shaped joint formed by welding a lower plate and a standing plate arranged in a T-shape.
- the welding method includes a plate material for assembling the standing plate in a T-shape on the lower plate in a state where a gap is formed between a lower end portion of the standing plate and an upper surface of the lower plate.
- An arc is generated from a welding electrode arranged on the surface side of the standing plate in a state where the lower plate and the standing plate are assembled in a letter shape in the assembling step and the plate material assembling step, and the welding electrode and A first welding step of melting a lower plate to form a back bead on the lower plate while leaving the gap between the back surface of the standing plate and the lower plate; and the first welding After the step, an arc is generated from the welding electrode disposed on the surface side of the vertical plate, and the welding electrode, the lower plate, the lower end of the vertical plate, and the back bead are melted to form the welding bead. And a second welding step for joining the lower plate and the lower end of the upright plate.
- a gap is formed between the lower end of the standing plate and the lower plate when the standing plate is arranged on the lower plate in the plate material assembling process.
- the first welding process when an arc is generated from the welding electrode arranged on the surface side of the upright plate, the arc is generated between the lower end portion of the upright plate and the lower plate. For this reason, the welding electrode and the lower plate are melted and lowered on the rear side of the vertical plate. A backside bead can be formed on the top side of the plate.
- the welding electrode is formed by melting the welding electrode, the lower plate, the lower end of the vertical plate, and the backside bead to form a welding bead. Can join the lower end of the plate
- the gap remains between the back plate formed on the lower plate and the lower end of the vertical plate in the first welding process, the gap from the welding electrode in the second welding step.
- the generated arc is surely led out to the back side of the standing plate through the gap between the back surface bee and the lower end of the standing plate, so that the back bead and the lower end of the standing plate are sufficiently connected. It is possible to form a weld bead with a large leg length between the back side of the upright plate and the lower plate, so that the lower plate and the lower end of the upright plate can be firmly joined.
- the first welding process and the second welding process can be performed continuously. Therefore, the plate material assembly process, the first welding process, and the second welding process can be carried out efficiently at one work place. As a result, as in the prior art, the first welding process, the plate material assembling process, and the second welding process are performed at different work locations, respectively. It is possible to improve workability when welding the vertical plate and the vertical plate.
- the back bead formed on the lower plate in the first welding process is formed along a gap between the lower plate and the lower end portion of the upright plate arranged on the lower plate. For this reason, for example, after forming a back bead on the lower plate, the work of positioning the vertical plate with respect to the back bead can be eliminated, and workability when welding the lower plate and the vertical plate is improved. Can be further enhanced
- a single-layer giant welding bead having a large leg length is provided between the back side of the plate and the lower plate.
- the second layer of welded bead with a large leg length can be formed between the surface side of the upright plate and the lower plate in the third welding process. Therefore, it is possible to form a welding leg having a large leg length between the back side of the upright plate and the lower plate, and between the front side of the upright plate and the lower plate, and the lower plate arranged in a T-shape. And the standing plate are firmly joined.
- a consumable electrode is used as the welding electrode, and the dimension of the recording gap is set to be larger than the outer diameter dimension of the consumable electrode.
- the arc generated from the consumable electrode gradually increases in diameter in the radial direction from the tip of the consumable electrode, and through the gap between the lower end of the vertical plate and the lower plate, It is led to the back side. Because the gap is larger than the outer diameter of the consumable electrode, the bottom edge of the vertical plate is prevented from melting by arc in the first welding process, and the back side of the vertical plate A good back bead can be formed with respect to the lower plate located in the position.
- a groove is provided at a lower end portion of the standing plate, and in the first welding step, the welding electrode includes an imaginary line that hangs down from a tip portion of the groove and the lower plate. It is configured to generate an arc near the position of the intersection with is there.
- the welding electrode can generate an arc in the vicinity of the position where the hypothetical line hanging from the tip of the groove intersects the lower plate. For this reason, an arc is generated on the front surface side of the groove. ⁇ A good backside bead is formed on the back surface side of the groove.
- the lower end portion of the upright plate is a flat surface having a flat bottom surface, and in the welding process of the younger brother 1, the welding electrode has a shape in which the flat surface faces the lower plate.
- the imaginary line that hangs down from the back surface of the standing plate and the lower plate are configured to generate an arc in the vicinity of the position of the fortune-telling.
- an arc is generated from the welding electrode in the vicinity of the intersection of the imaginary line and the lower plate that hangs down from the back surface of the standing plate whose lower end is a flat surface. You can. As a result, no arc is generated on the surface side of the upright plate, and a good back bead can be formed on the back side of the upright plate by this arc.
- the step of forming a groove in the vertical plate can be omitted, and this can reduce the manufacturing cost of the ⁇ -type joint. it can.
- the welding electrode in the second welding step, is configured to generate an arc in the same direction as the arc generation direction in the first welding step.
- the welding electrode is
- a mixed gas containing argon gas is used as the seal gas covering the arc.
- the back end of the bead toe is smooth between the back surface of the upright plate and the lower plate in the first welding process. Wave beads can be formed. As a result, it is possible to suppress the concentration of stress at the toe end of the back bead and increase the bonding strength between the lower plate and the upright plate.
- FIG. 1 is a perspective view showing a lower plate, a vertical plate, a welding wire, and the like used in the T-type joint welding method according to the first embodiment of the present invention.
- Fig. 2 is a cross-sectional view of the plate assembly process as viewed from the direction indicated by the arrow in Fig. 1 1 1 1 1 1.
- Fig. 3 is a sectional view of the same position as Fig. 2 showing the first welding process.
- Fig. 4 is a sectional view of the second welding process at the same position as Fig. 2
- FIG. 5 is a cross-sectional view of the third welding process at the same position as in FIG.
- FIG. 6 is a perspective view showing a lower plate, a standing plate, a welding wire, etc. used in the welding method of the T-shaped joint according to the second embodiment.
- FIG. 7 is a cross-sectional view of the plate material assembly process as seen from the direction of arrows VII-VII in Fig. 6.
- FIG. 8 is a cross-sectional view at the same position as FIG. 7 showing the first welding process.
- FIG. 9 is a sectional view of the second welding process at the same position as in FIG.
- FIG. 10 is a cross-sectional view at the same position as FIG. 7 showing the third welding process.
- FIG. 1 is a cross-sectional view showing a hollow structure formed by using the T-type joint welding method according to the present invention.
- FIG. 12 is a perspective view showing a state in which one web plate is welded to one flange plate.
- Fig. 13 is a perspective view showing a state in which the other web plate is welded to one flange plate.
- FIG. 14 is a perspective view showing a state in which one web plate is welded to the other flange plate.
- FIG. 15 is a perspective view showing a state in which the other web plate is welded to the other flange plate.
- FIG. 1 to FIG. 5 show a first embodiment of the present invention.
- a groove is BXed at the lower end of a vertical plate.
- 1 is a lower plate constituting a T-shaped joint, and the lower plate
- Stand 2 can be assembled.
- the upright plate 2 is formed in a flat plate shape using, for example, a steel plate.
- the upright plate 2 is assembled in a T-shape on the upper surface 1 A side of the lower plate 1 in a state substantially orthogonal to the lower plate 1.
- a lave groove 3 (hereinafter referred to as a groove 3) inclined in the shape of a leve is formed.
- the AL plate 2 is assembled in a T shape on the upper surface 1 A of the lower plate 1 via a thin plate-like spacer 4. Then, as shown in FIG. An upper and lower gap 5 is formed between the tip 3 A of the groove 3 and the upper surface 1 A of the lower plate 1.
- a welding wire 7 described later is arranged on the surface 3 B side of 3.
- the dimension G 1 of the gap 5 formed between the tip 3 A of the groove 3 and the upper surface 1 A of the lower plate 1 is set to be larger than the diameter d of the weld filler 7.
- the welding joint 6 is a welding wire for welding the groove 3 of the vertical plate 2 and the lower plate 1.
- the welding torch 6 supplies welding current to the welding wire 7 from a power supply device (not shown) for arc welding.
- the welding torch 6 continuously feeds the welding wire 7 toward the welded portion between the groove 3 of the vertical plate 2 and the lower plate 1, while the longitudinal direction of the vertical plate 2 (indicated by arrow A in FIG. 1). Direction).
- the welding wire 7 shows a welding wire as a welding electrode arranged on the surface 3 B side of the groove 3.
- the welding wire 7 is continuously supplied by the welding torch 6 toward the welded portion between the groove 3 of the upright plate 2 and the lower plate 1.
- the welding wire 7 is supplied with a welding current from a power supply device (not shown) for arc welding, so that the upper surface 1 A of the lower plate 1 as shown in FIG. An arc is generated toward Then, the welding 7 through 7 and the like are melted by the heat generated by this arc, so that the below-described back bead 8 can be formed.
- the welding torch 6 supplies a shield gas made of, for example, an argon-carbon dioxide mixed gas containing 80% of argon gas toward the welded portion between the groove 3 of the upright plate 2 and the lower plate 1.
- the shield gas covers the arc generated from the welding wire 7 and the welded portion between the groove 3 and the lower plate 1 from the atmosphere. As a result, generation of oxides and nitrides that cause welding defects can be suppressed.
- the board assembly process will be described.
- the upright plate 2 is assembled in a T-shape on the upper surface 1 A side of the lower plate 1 via the spacer 4.
- the upright plate 2 has a T-shape on the lower plate 1 with a gap 5 formed between the tip 3A of the groove 3 and the upper surface 1A of the lower plate 1. Be placed.
- the upright plate 2 is held at this position by using an assembly jig (not shown).
- a welding torch 6 and a welding wire 7 supplied by the welding torch 6 are disposed on the surface 3 B side of the groove 3 provided on the standing plate 2.
- the dimension G1 of the upper gap 5 formed between the tip 3A of the groove 3 and the upper surface 1A of the lower plate 1 is welded. It is set to be larger than the diameter d of the wire 7.
- an imaginary line that hangs down from the tip 3 A of the groove 3 toward the lower plate 1 is S 1—S 1
- the welding wire 7 has its center line O-O near It is placed at the position of father with the upper surface 1A.
- the weld wire 7 is connected to the back surface 3 C side of the groove 3 at the intersection P 1 between the imaginary line S 1 and S 1 that hangs down from the tip 3 A of the groove 3 and the upper surface 1 A of the lower plate 1.
- an arc is generated ahead of the intersection P 1.
- welding current is supplied to the welder 7 from a power supply device (not shown) for arc welding. 2 grooves
- a shield gas made of a mixed gas containing Argon gas is supplied to the welded part between 3 and the lower plate 1
- the weld wire 7 generates an arc in the vicinity of the intersection P 1 between the imaginary line S 1, S 1 and the lower plate 1 that hangs down from the tip 3 A of the groove 3. No arc is generated on the front surface 3 B side of the groove, and an arc is generated at the position of the upper surface 1 A of the lower plate 1 on the back surface 3 C side of the groove 3. As a result of — Form 8 can be formed.
- the dimension G 1 of the gear 5 between the tip 3 A of the groove 3 and the lower plate 1 is set to be larger than the diameter d of the welding wire 7.
- the arc generated from the welding wire 7 gradually increases in diameter in the radial direction from the tip of the welding wire 7 and through the gap 5 between the groove 3 and the lower plate 1, the back surface 3 C of the groove 3 To the side.
- the tip side of the groove 3 can be prevented from being melted by the arc, and the back surface of the groove 3 can be prevented.
- 3 A good back bead 8 can be formed on the lower plate 1 located on the C side.
- a mixed gas containing Argon gas is used as the shielding gas to cover the arc, so that the welding torch 6 is tilted with respect to the lower plate 1 at an angle as shown in FIG. Even when an arc is generated from the wire 7 to form the back bead 8, the bead end of the back bead 8 is made to have a smooth shape. Therefore, for example, by using carbon dioxide as the shielding gas, it is possible to prevent stress from concentrating on the bead toe of the back wave bead.
- 1st weld bead between 1 and groove 3 9 is formed, and the first-layer weld bead 9 is continuously formed in a straight line along the longitudinal direction of the upright plate 2.
- the back plate 8 formed on the lower plate 1 and the tip 3 of the groove 3 are formed in the first welding process.
- gap 5 remains with A. Therefore, in the second welding process, welder 7 is in the same direction as the occurrence of the arc by the first welding process, that is, the groove. An arc is generated from the front surface 3 B side of 3 through the gap 5 to the back surface 3 C side of the groove 3. As a result, the arc generated by the welding wire 7 force can be reliably led to the back surface 3 C side of the groove 3 through the gap 5.
- the back bead 8 formed on the back surface 3C side of the upright plate 2 of the upper surface 1A of the lower plate 1 serves as a breakwater for the arc. Therefore, with this arc, back wave bead 8 and lower plate 1
- the groove 3 of the AL plate 2 can be reliably melted.
- the moving speed of the welding torch 6 in the second melting process is set smaller than the moving speed of the welding torch 6 in the first welding process. This makes the backside bead
- the tip side of the groove 3 and the lower plate 1 are sufficiently melted to have a large leg length L 1 between the back surface 3 C of the groove 3 and the lower plate 1 as shown in FIG.
- a weld bead 9 of the layer can be formed.
- the lower plate 1 and the groove 3 of the upright plate 2 can be firmly joined.
- the two-layer huge weld bead 10 is continuously formed in a straight line along the longitudinal direction of the upright plate 2.
- the first layer of welding bead F having a large leg length L 1 on the back surface 3 C side of the groove 3 between the groove 3 and the lower plate 1. 9 is formed.
- a one-layer giant welding bead is used.
- the groove 3 and the lower plate 1 are formed with a second layer of weld bead 10 having a large leg length L 2 on the surface 3 B side of the groove 3.
- the lower plate 1 and the standing plate 2 arranged in a T-shape can be firmly joined.
- a gap 5 is formed between 1 and 1.
- the first welding process and the second welding process can be carried out continuously. Therefore, the plate material assembly process, the first welding process, the first welding process, The second welding can be carried out efficiently at the first work place.
- the back bee 8 formed on the lower plate 1 in the welding process is formed along the gap 5 between the lower plate and the groove 3 of the standing plate 2 disposed on the lower plate 1.
- a second-layer weld bead 10 is formed between the first-layer weld bead 9, the groove 3 and the lower plate 1.
- the first layer weld bead having a large leg length L1 on the back surface 3C side of the groove 3 9 and a second-layer weld bead 10 having a large leg length L 2 on the surface 3 B side of the groove 3 can be formed.
- the lower plate 1 and the vertical plate arranged in a T-shape by two layers of welding beads 9 and 10 2 can be firmly bonded to each other
- the dimension G 1 of the gap 5 between the groove 3 of the M plate 2 and the lower plate 1 is set to be smaller than the diameter d of the welding wire 7.
- the arc generated from the weld wire 7 gradually expands in the radial direction from the tip of the weld wire 7 and through the gap 5 between the groove 3 and the lower plate 1, the back surface of the groove 3 3 It is possible to prevent the tip side of groove 3 from being melted by the arc, which is a dike led out to the C side. As a result, it is possible to form a good back wave B 8 on the back surface 3 C side of the groove 3.
- the weld wire 7 generates an arc in the vicinity of the position P 1 between the virtual line S 1 S 1 that hangs down from the tip 3 A of the groove 3 and the lower plate 1. For this reason, there is no possibility of occurrence of an arc on the front surface 3 B side of the groove 3 ⁇ on the back surface 3 C side of the groove 3 and on the upper surface 1 A position of the lower plate 1 be able to. As a result, the back bee 8 is surely formed on the back surface 3 C side of the groove 3 by this arc.
- the welder 7 passes through the gap 5 from the surface 3 B side of the groove 3 from the arc direction and the J direction in the first welding process.
- FIGS. 6 to 10 show a second embodiment of the T-type joint welding method according to the present invention ⁇ .
- the lower end portion of the upright plate is a flat surface having a flat bottom surface.
- reference numeral 1 1 denotes a vertical plate that forms a T-shaped joint together with the lower plate 1, and the vertical plate 1 1 is used in this embodiment instead of the vertical plate 2 used in the first embodiment.
- the standing plate 11 is formed in a flat plate shape using, for example, a steel plate material, in the same manner as the standing plate 2 according to the first embodiment.
- the standing plate 1 1 is different from the standing plate 2 according to the first embodiment in that the lower end portion (the upper surface side of the lower plate 1) is a flat surface 11 C described later. is there.
- the flat surface 11 C provided at the lower end of the upright plate 11 becomes a cut surface when, for example, a steel plate material is cut, and has a flat bottom surface to which no groove is added. The surface is flat. Then, as shown in FIG. 6, the upright plate 11 is assembled in a T-shape on the upper surface 1 A of the lower plate via a thin plate-like spacer 12. As a result, the flat surface of the upright plate 1 1
- An upper and lower gap 13 is formed between C and the upper surface 1 A of the lower plate 1.
- the dimension G 2 of the gap 1 3 between the flat surface 1 1 C of the upright plate 1 1 and the upper surface 1 A of the lower plate 1 is arranged on the surface 1 A side of the upright plate 1 1. It is set to be larger than the diameter d of the welding wire 7 supplied from the welding torch 6. For this reason, the welding wire 7 does not come into contact with the upper surface 1 A of the lower plate 1 and the flat surface 1 1 C of the standing plate 1 1, but from the front end side of the welding torch 6 to the back surface 1 1 of the standing plate 1 1. It extends to the B side (see Figure 7). As a result, when an arc is generated from the tip of the welding wire 7, this arc is led out to the back surface 11 B side of the upright plate 1 1 through the gap 13.
- the hypothetical line that hangs from the back surface 1 1 B of the upright plate 1 1 toward the lower plate 1 is S 2-1 S 2
- the intersection of this virtual line S 2—S 2 and the upper surface 1 A of the lower plate 1 is P 2
- the welding wire 7 has an upper surface of the lower plate 1 in the vicinity of the position where the center line O-O intersects the intersection P 2.
- the weld wire 7 is marked between the imaginary line S 2 and S 2 and the upper surface 1 A of the lower plate 1, and is marked on the back surface 11 B side of the standing plate 1 1 rather than ⁇ 2. Is starting to occur.
- the T 1 is disposed on the lower plate 1.
- the upright plate 1 1 is held in this position by using an assembly jig (not shown).
- the welding torch 6 and the welding wire 7 are arranged on the surface 11 A side of the AL plate 11. In this case, as shown in FIG.
- Temporary phase line S 2 hangs down from B to bottom plate 1 S 2 If the intersection of S 2 and top surface 1 A of bottom plate 1 is P 2, weld 7 and 7 are The line O-O is arranged at the position where it intersects the upper surface 1A of the lower plate 1 near the position of the intersection P2.
- the welding wire 6 is moved in the longitudinal direction of the standing plate 1 1 (in the direction indicated by the arrow A in FIG. 6) while the welding wire 6 is moved.
- a shield gas made of a mixed gas containing argon gas is used. Supply.
- the arc generated from the welding wire 7 passes through the gap 1 3 between the flat surface 1 1 C of the M plate 11 and the lower plate 1, and the surface 1 1 of the upright plate 1 1.
- the arc melts the welder 7 and the upper surface 1 A side of the lower plate 1, and as shown in FIG. F 1 4 is formed.
- the back bead 14 is continuously formed in a straight line along the longitudinal direction of the upright plate 1 1 with the gap 13 remaining between the flat bead 11 and the flat surface 11 C.
- the welding wire 7 generates an arc in the vicinity of the occupied line P 2 between the imaginary line S 2—S 2 and the lower plate 1 that hangs down from the back surface 1 1 B of the upright plate 1 1. For this reason, the surface 1 of the AL plate 1 1
- the welding torch 6 is again attached to the length of the upright plate 1 1. Then, an arc is generated from the tip of the welding wire 7 toward the back bead 14, and the welding wire 7, the upper surface of the lower plate 1 1 A the flat surface 1 1 C of the standing plate 1 1, And melt the back bead 14. As a result, one layer that is linearly continuous along the longitudinal direction of the upright plate 1 1 between the lower plate 1, the upright plate 1 1, and the back plate 1 14.
- the welding wire 7 is keyed by the first welding process.
- the backside bead, 14 formed on the B side serves as the arc breakwater.
- the flat surface 1 1 C lower plate 1 and back bead 14 of the standing plate 1 1 where no groove is formed can be sufficiently melted.
- the gap between 1 C and 1 3 can be closed.
- An arc is generated from the tip of 7 toward the weld layer 15 of the first layer.
- the bottom surface of the upright plate 1 1 where the lower end portion is not subjected to the groove processing 1 1 C 1 1 The front surface 1 1 Even if one-side welding is performed from the A side, the back surface of the upright plate 1 1 1 1 1 1 The first layer of weld bead 15 with a large leg length L 1 'on the B side can be formed. The surface 1 1 of the upright plate 1 1 The second layer with a large leg length L 2' on the A side As a result, the lower plate 1 and the plate 1 1 arranged in a letter shape can be firmly joined.
- the lower end portion of the upright plate 11 is made to be a flat surface 11 C to which no groove is applied.
- the step of forming a groove in the standing plate 1 1 can be omitted. As a result, the manufacturing cost of the T-shaped joint can be reduced.
- a hollow structure is formed by upper and lower flange plates as lower plates and left and right web plates as standing plates. The case of forming this will be described with reference to FIGS. 11 to 15.
- 21 shows a hollow structure formed by using the T-type joint welding method according to the present invention. This hollow structure
- 2 1 is used, for example, as a boom or arm of a hydraulic cylinder 3, where the hollow structure 2 1
- one flange plate for example, the lower flank plate 22 is used as shown in FIG.
- one side plate for example, the left web plate 2 4 is assembled into a T shape, ⁇ is on the upper end side and the lower end side of the left side plate 2 4, respectively.
- a labyrinth groove 2 4 A (hereinafter referred to as a groove 2 4 A) that is inclined in a labyrinth is formed.
- the left web plate 2 4 is assembled into a T-shape via a thin plate-like spacer 26 at a position shifted to the left and right sides of the lower flange plate 2 2.
- a gap 2 7 is formed over the entire length between the lower flange plate 2 2 and the groove 2 4 A of the left web plate 2 4.
- a weld bead 2 8 consisting of a back bead, a first layer weld bead, and a second layer weld bead can be formed between 2 and 4.
- the right web plate 25 is assembled in a T-shape on the upper surface side of the lower flange plate 2 2.
- the right web plate 2 5 has its upper end side and lower end side in the same manner as the left web plate 2 4.
- Formed with a beveled groove 25 A hereinafter referred to as groove 25 A
- the right web plate 2 5 is assembled in a T-shape via the spacer 2 6 at the position of the lower flange plate 2 2 that is shifted to the other side of the left or right direction.
- a gap 2 7 is formed over the entire length between the lower flange plate 2 2 and the groove 25 A of the right web plate 25.
- one-side welding is performed from the surface 25 B side of the right web plate 25 using the welding torch 6, and a mountain-shaped welding bead is connected between the right web plate 25 and the lower flange plate 22.
- 2 9 can be formed
- a gap 2 7 is formed over the entire length between 2 and 5 A.
- one-side welding is performed using the welding torch 6 from the surface 24 B side of the left vev plate 24.
- a mountain-shaped weld bead is formed between the left X plate 2 4 and the upper flange plate 2 3, from the front surface 2 4 B side to the back surface side of the left web plate 2 4.
- the embodiment described above is a welding electrode (consumable electrode) that generates a arc toward the welded portion between the lower plate 1 and the groove 3 of the upright plate 2.
- a welding electrode (consumable electrode) that generates a arc toward the welded portion between the lower plate 1 and the groove 3 of the upright plate 2.
- the case where is used is illustrated.
- the present invention is not limited to this.
- a rod-shaped filler metal may be used as the welding electrode.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP08837732.0A EP2199003A4 (en) | 2007-10-12 | 2008-09-26 | Welding method for t-joint |
CN2008800204815A CN101687267B (zh) | 2007-10-12 | 2008-09-26 | T型接头的焊接方法 |
US12/664,064 US8283599B2 (en) | 2007-10-12 | 2008-09-26 | Welding method for T-joint |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007-266531 | 2007-10-12 | ||
JP2007266531 | 2007-10-12 |
Publications (1)
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WO2009048017A1 true WO2009048017A1 (ja) | 2009-04-16 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2008/067989 WO2009048017A1 (ja) | 2007-10-12 | 2008-09-26 | T型継手の溶接方法 |
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US (1) | US8283599B2 (ja) |
EP (1) | EP2199003A4 (ja) |
JP (1) | JP4908476B2 (ja) |
KR (1) | KR20100057080A (ja) |
CN (1) | CN101687267B (ja) |
WO (1) | WO2009048017A1 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102010031890B3 (de) * | 2010-07-21 | 2011-11-10 | Benteler Automobiltechnik Gmbh | Verfahren zum Herstellen einer stoffschlüssigen Verbindung und Hohlprofilverbindung |
DE202010015809U1 (de) * | 2010-11-24 | 2011-03-24 | Palige, Paul | Schweißspaltklammer |
US20120214017A1 (en) * | 2011-02-22 | 2012-08-23 | Pourin Welding Engineering Co., Ltd. | Weld Overlay Structure and a Method of Providing a Weld Overlay Structure |
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JP7239418B2 (ja) * | 2019-07-29 | 2023-03-14 | 日鉄溶接工業株式会社 | ボックス型鋼構造物の溶接方法 |
CN110640271B (zh) * | 2019-09-30 | 2021-09-14 | 广州黄船海洋工程有限公司 | 低合金高强度钢t型全焊透接头横角焊位置的高效焊接工艺 |
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- 2008-09-04 JP JP2008227408A patent/JP4908476B2/ja not_active Expired - Fee Related
- 2008-09-26 KR KR1020107007600A patent/KR20100057080A/ko active IP Right Grant
- 2008-09-26 WO PCT/JP2008/067989 patent/WO2009048017A1/ja active Application Filing
- 2008-09-26 EP EP08837732.0A patent/EP2199003A4/en not_active Withdrawn
- 2008-09-26 CN CN2008800204815A patent/CN101687267B/zh not_active Expired - Fee Related
- 2008-09-26 US US12/664,064 patent/US8283599B2/en not_active Expired - Fee Related
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Also Published As
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EP2199003A4 (en) | 2017-02-15 |
US20100176108A1 (en) | 2010-07-15 |
JP2009107016A (ja) | 2009-05-21 |
JP4908476B2 (ja) | 2012-04-04 |
US8283599B2 (en) | 2012-10-09 |
EP2199003A1 (en) | 2010-06-23 |
CN101687267B (zh) | 2013-10-09 |
KR20100057080A (ko) | 2010-05-28 |
CN101687267A (zh) | 2010-03-31 |
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