WO2024003992A1 - アーク溶接法及び該アーク溶接法で溶接された接合体の溶接強度検査法 - Google Patents
アーク溶接法及び該アーク溶接法で溶接された接合体の溶接強度検査法 Download PDFInfo
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- WO2024003992A1 WO2024003992A1 PCT/JP2022/025596 JP2022025596W WO2024003992A1 WO 2024003992 A1 WO2024003992 A1 WO 2024003992A1 JP 2022025596 W JP2022025596 W JP 2022025596W WO 2024003992 A1 WO2024003992 A1 WO 2024003992A1
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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
- 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
- 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
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
-
- 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
-
- 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
-
- 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
- B23K9/235—Preliminary treatment
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/15—Magnesium or alloys thereof
Definitions
- the present invention relates to an arc welding method and a method for inspecting the weld strength of a joined body welded by the arc welding method, and more specifically, the present invention relates to an arc welding method for joining non-ferrous metal plates to each other and a welding strength inspection method for a joined body welded by the arc welding method.
- This article relates to a welding strength testing method for joined bodies.
- an arc spot welding method is known in which a hole is formed in the plate material on the side of the arc welding machine of a stacked workpiece, and the workpieces are joined by wire-fed arc spot welding.
- Patent Document 1 states that when performing arc spot welding by melting the inner wall of the processed hole formed in the plate material, the melting depth of the lower plate material becomes deep and burn-through occurs, so that the lower plate material It is stated that the backing device should be brought into contact with the
- the present invention has been made in view of the problems of the prior art, and its purpose is to eliminate the need for a backing jig and to solve the problem when there is a limit to the space on the back side of the workpiece. It is an object of the present invention to provide an arc welding method that enables arc spot welding even when the welding is performed.
- the inventor of the present invention has found that the above object can be achieved by forming a machined hole that reaches not only the plate material on the arc welding machine side but also the plate material on the farthest side from the arc welding machine. We have discovered what can be achieved and have completed the present invention.
- the arc welding method of the present invention is an arc welding method in which at least a portion of a workpiece made of a plurality of stacked nonferrous metal plates is melted and joined.
- the workpiece has a machined hole in the welding area, and the machined hole penetrates the nonferrous metal plate on the arc irradiation side and reaches the nonferrous metal plate on the farthest side from the arc welding machine, making a part of it dented.
- the arc is irradiated from the opening side of the machined hole, and without using a backing jig on the opposite side of the workpiece, the back side of the non-ferrous metal plate on the farthest side is melted, Characterized by welding.
- the welding strength testing method of the present invention is a method for testing the welding strength of a joined body welded by arc welding.
- the present invention is characterized in that the welding strength is estimated from the diameter of the fused portion appearing on the back surface of the farthest non-ferrous metal plate.
- the machined hole is formed to reach not only the plate material on the arc welding machine side but also the plate material farthest from the arc welding machine, so welding can be performed without using a backing device. Therefore, it is possible to provide an arc welding method that allows welding even when the space on the back side of the workpiece is limited.
- FIG. 2 is a sectional view of a main part explaining the arc welding method of the present invention.
- FIG. 2 is a sectional view of a main part of a joined body welded by the arc welding method of the present invention. It is a graph showing the relationship between the plate thickness of the part where the machined hole is formed and the presence or absence of burn-through at the joint part of the non-ferrous metal plate on the farthest side from the arc welding machine when the machined hole diameter is 4 mm. It is a graph showing the relationship between the plate thickness of the part where the machined hole is formed and the presence or absence of burn-through at the joint part of the non-ferrous metal plate on the farthest side from the arc welding machine when the machined hole diameter is 8 mm.
- the arc welding method of the present invention is a welding method in which at least a portion of a workpiece is melted by an arc and a plurality of stacked nonferrous metal plates are joined together.
- a workpiece 2 made of a plurality of stacked non-ferrous metal plates has a machined hole 21 formed in advance at the welding site, and the machined hole is located at the farthest non-ferrous metal plate 4 from the arc welding machine 1 (hereinafter referred to as (hereinafter sometimes referred to as the "back plate"), which is placed on the welding machine side This is a non-penetrating hole that extends through the hole and recesses a portion of the back plate 4.
- a welding torch is turned to irradiate the arc with the inner peripheral surface of the processed hole 21 from the opening side of the processed hole 21, melting the inner peripheral surface of the processed hole 21 together with the wire, and as a result, the inner peripheral surface of the processed hole 21
- the arc irradiation is stopped and the non-ferrous metal plates are solidified, thereby joining the stacked non-ferrous metal plates.
- the number of front side plates 3 is not limited to one, and a plurality of plates may be stacked one on top of the other.
- the inner peripheral side of the machined hole is also formed on the back plate, and the front side adjacent to the joint interface in the in-plane direction is Since the backing plate is melted together with the board, no backing equipment is required.
- the bonding interface needs to melt, and if the back plate is flat and not concave, the back plate cannot be melted in the direction of the joining interface unless the bottom of the machined hole is melted. Therefore, in order to join the back plate and the adjacent front plate, the back plate must first be melted in the thickness direction. On the other hand, if a part of the back plate is recessed, the back plate can be immediately melted in the direction of the bonding interface, so even if the bottom of the back plate is not melted, the bond between the back plate and the adjacent front plate is is possible.
- the arc welding method of the present invention can melt a workpiece made of stacked non-ferrous metal plates in the in-plane direction of the joint interface without melting it in the thickness direction, so that the vicinity of the joint interface can be melted quickly. By doing so, it is possible to join the back plate and the front plate before the bottom of the machined hole melts down.
- the workpiece is also melted in the thickness direction, and by irradiating the arc until the back surface of the back plate is melted, the melted part is joined as shown in Figure 2.
- the molten metal from the welding wire sufficiently spreads in the in-plane direction of the interface, fills the processed hole, and solidifies to ensure bonding strength by the molten part formed.
- the welding energy input to the workpiece can be saved, not only deformation of the workpiece can be suppressed, but also the amount of fume and dust generated can be suppressed.
- Fig. 1 shows a mode in which arc is irradiated from above the machined hole formed in the workpiece, welding is performed by irradiating the arc from above, but by rotating the workpiece 90 degrees and directing the opening of the machined hole to the side, welding is performed from the side. It is also possible to weld by arc irradiation.
- the welding energy applied to the workpiece depends on the material and thickness of the non-ferrous metal plate, as well as the depth and diameter of the hole to be machined, but the current applied is 50 to 350 A (ampere), and the duration of welding is 0.5 to 5. Preferably seconds.
- the molten metal falls from the joint and separates, reducing the volume of the molten part where the molten metal solidifies, and reducing the joint strength.
- the plate thickness of the recessed part of the back plate (the part where the machined hole is formed) is thicker than 1/20 of the diameter of the machined hole.
- FIG. 3 shows the relationship between the thickness of the back plate where the hole is formed and the cross tensile strength (CTS) when a hole with a diameter of 4 mm is formed in a 5000 series aluminum alloy plate.
- FIG. 4 shows the relationship between the thickness of the back plate at the location where the processed holes are formed and the cross tensile strength (CTS).
- the back plate at the bonding interface can be melted in the direction of the bonding interface.
- the machined hole is cylindrical. Since the inner circumferential surfaces of the machined holes formed in the back plate and the adjacent front plate are flush, the back plate and front plate can be bonded at the same time at the joint interface between the back plate and the front plate. Since it can be melted, it is easy to melt in the direction of the bonding interface.
- the diameter of the machined hole is preferably larger than three times the thickness of the thinnest non-ferrous metal plate among the non-ferrous metal plates constituting the workpiece, although it depends on the required bonding strength. If the diameter of the above-mentioned machined hole is smaller than three times the thickness of the thinnest non-ferrous metal plate of the non-ferrous metal plates that make up the above-mentioned workpiece, the volume of the machined hole is small and the molten metal will fill the machined hole. However, the amount of heat possessed is small. As a result, heat is easily dissipated into the surrounding base metal, it is difficult to melt in the direction of the joint interface, and welding defects such as non-welding occur.
- the welding strength when welding multiple plates stacked is determined by the welding strength of the thinnest plate, and as shown in FIG. 5, this welding strength has a correlation with the diameter of the machined hole.
- the thickness of the thinnest plate material is 1 mm and the required strength as a product is 2.0 kN, it is possible to guarantee a strength of 2.5 kN or more by making the hole diameter 4.5 mm or more. can.
- the above arc welding method can be applied to welding non-ferrous metal plates, and examples of the metals constituting the non-ferrous metal plates include aluminum, magnesium, titanium, and alloys containing these metals.
- the welding strength of a joined body is determined by the diameter of the joint interface 51 between the two plate materials of the fusion zone 5, so in order to know the welding strength of the joint, it is necessary to measure the diameter of the joint interface 51 of the fusion zone 5. be. However, it is difficult to measure the diameter of the bonding interface 51 of the molten part 4 from the outside.
- the machined hole 21 that penetrates the joint interface 51 is formed at the welding site, and the edge of the joint interface 51 is exposed, so the vicinity of the joint interface is directly passed through the machined hole 21. It can be melted, and the vicinity of the bonding interface can be melted without melting the bottom of the processed hole 21. Therefore, if the fused portion 5 is formed up to the 4th back surface 41 of the back plate, the diameter of the fused portion at the joining interface 51 will be larger than the diameter 52 of the fused portion appearing on the back surface 41.
- the welding strength of the joined body welded by the arc welding method of the present invention can be estimated from the diameter 52 of the fused portion appearing on the back surface 41 of the back plate 4.
- FIG. 6 shows the relationship between the diameter of the fusion zone appearing on the back surface of the back plate and the tensile shear strength of the joined body welded by the arc welding method of the present invention.
- the welding strength inspection method for jointed bodies only requires measuring the diameter of the fused part that appears on the back surface of the back plate, which is visible, and the welding strength of the jointed body can be easily estimated. A complete body test is possible.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Quality & Reliability (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
Description
そして、上記ワークが、溶接部位に加工穴を有し、上記加工穴が、アーク照射側の非鉄金属板を貫通してアーク溶接機から最も遠い側の非鉄金属板に達し、その一部を凹ませた非貫通孔であり、上記加工穴の開口側からアークを照射し、上記ワークの反対側に裏当て治具を使用せずに、上記最も遠い側の非鉄金属板の裏面まで溶融させ、溶接することを特徴とする。
そして、上記最も遠い側の非鉄金属板の裏面に現れた溶融部の径から溶接強度を推定することを特徴とする。
本発明のアーク溶接法は、ワークの少なくとも一部をアークによって溶融し、重ねた複数の非鉄金属板同士を接合する溶接法である。
なお、表がわ板3は、1枚に限られず、複数枚重なっていても構わない。
2 ワーク
21 加工穴
22 加工穴形成箇所の裏板の板厚
3 アーク溶接機側の非鉄金属板(表がわ板)
4 アーク溶接機から最も遠い側の非鉄金属板(裏板)
41 裏面
5 溶融部
51 接合界面
52 裏面に現れた溶融部の径
Claims (5)
- 複数の非鉄金属板を重ねたワークの少なくとも一部を溶融して接合するアーク溶接法であって、
上記ワークが、溶接部位に加工穴を有し、
上記加工穴が、アーク照射側の非鉄金属板を貫通してアーク溶接機から最も遠い側の非鉄金属板に達し、その一部を凹ませた非貫通孔であり、
上記加工穴の開口側からアークを照射し、上記ワークの反対側に裏当て治具を使用せずに、上記最も遠い側の非鉄金属板の裏面まで溶融させ、溶接することを特徴とするアーク溶接法。 - 上記加工穴が、円筒形であることを特徴とする請求項1に記載のアーク溶接法。
- 上記最も遠い側の非鉄金属板の凹んだ部分の板厚が、加工穴の径の1/20よりも厚いことを特徴とする請求項2に記載のアーク溶接法。
- 上記加工穴の径が、上記ワークを構成する非鉄金属板のうち、最も薄い非鉄金属板の厚さの3倍よりも大きいことを特徴とする請求項3に記載のアーク溶接法。
- 上記請求項1~4のいずれか1つの項に記載のアーク溶接法で溶接された接合体の溶接強度検査法であって、
上記最も遠い側の非鉄金属板の裏面に現れた溶融部の径から溶接強度を推定することを特徴とする溶接強度検査法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22949271.5A EP4545234A1 (en) | 2022-06-27 | 2022-06-27 | Arc welding method, and method for inspecting welding strength of joined article welded through said arc welding method |
| JP2024530095A JP7678413B2 (ja) | 2022-06-27 | 2022-06-27 | アーク溶接法及び該アーク溶接法で溶接された接合体の溶接強度検査法 |
| PCT/JP2022/025596 WO2024003992A1 (ja) | 2022-06-27 | 2022-06-27 | アーク溶接法及び該アーク溶接法で溶接された接合体の溶接強度検査法 |
| CN202280097299.XA CN119403638B (zh) | 2022-06-27 | 2022-06-27 | 电弧焊法和利用该电弧焊法焊接的接合体的焊接强度检查法 |
| US18/865,806 US12465990B2 (en) | 2022-06-27 | 2022-06-27 | Arc welding method, and method for inspecting welding strength of joint welded using arc welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2022/025596 WO2024003992A1 (ja) | 2022-06-27 | 2022-06-27 | アーク溶接法及び該アーク溶接法で溶接された接合体の溶接強度検査法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024003992A1 true WO2024003992A1 (ja) | 2024-01-04 |
Family
ID=89381794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/025596 Ceased WO2024003992A1 (ja) | 2022-06-27 | 2022-06-27 | アーク溶接法及び該アーク溶接法で溶接された接合体の溶接強度検査法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12465990B2 (ja) |
| EP (1) | EP4545234A1 (ja) |
| JP (1) | JP7678413B2 (ja) |
| CN (1) | CN119403638B (ja) |
| WO (1) | WO2024003992A1 (ja) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0639542A (ja) | 1992-07-24 | 1994-02-15 | Sekisui Chem Co Ltd | ア−クスポット溶接方法 |
| WO2018030272A1 (ja) * | 2016-08-09 | 2018-02-15 | パナソニックIpマネジメント株式会社 | 接合構造 |
| WO2020213492A1 (ja) * | 2019-04-19 | 2020-10-22 | パナソニックIpマネジメント株式会社 | 接合構造 |
| WO2020213491A1 (ja) * | 2019-04-19 | 2020-10-22 | パナソニックIpマネジメント株式会社 | 接合構造 |
| JP2021037550A (ja) * | 2020-12-07 | 2021-03-11 | 株式会社神戸製鋼所 | 異材接合用アーク溶接法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5842734B2 (ja) * | 2011-05-27 | 2016-01-13 | 新日鐵住金株式会社 | 継手強度に優れたアークスポット溶接継手およびその製造方法 |
| JP6285724B2 (ja) * | 2014-01-14 | 2018-02-28 | 株式会社アマダミヤチ | 接合方法及び接合装置 |
| JP7593900B2 (ja) * | 2021-08-23 | 2024-12-03 | 株式会社神戸製鋼所 | 異材接合用アークスポット溶接法 |
-
2022
- 2022-06-27 EP EP22949271.5A patent/EP4545234A1/en not_active Withdrawn
- 2022-06-27 US US18/865,806 patent/US12465990B2/en active Active
- 2022-06-27 JP JP2024530095A patent/JP7678413B2/ja active Active
- 2022-06-27 WO PCT/JP2022/025596 patent/WO2024003992A1/ja not_active Ceased
- 2022-06-27 CN CN202280097299.XA patent/CN119403638B/zh active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0639542A (ja) | 1992-07-24 | 1994-02-15 | Sekisui Chem Co Ltd | ア−クスポット溶接方法 |
| WO2018030272A1 (ja) * | 2016-08-09 | 2018-02-15 | パナソニックIpマネジメント株式会社 | 接合構造 |
| WO2020213492A1 (ja) * | 2019-04-19 | 2020-10-22 | パナソニックIpマネジメント株式会社 | 接合構造 |
| WO2020213491A1 (ja) * | 2019-04-19 | 2020-10-22 | パナソニックIpマネジメント株式会社 | 接合構造 |
| JP2021037550A (ja) * | 2020-12-07 | 2021-03-11 | 株式会社神戸製鋼所 | 異材接合用アーク溶接法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7678413B2 (ja) | 2025-05-16 |
| EP4545234A1 (en) | 2025-04-30 |
| US12465990B2 (en) | 2025-11-11 |
| US20250256343A1 (en) | 2025-08-14 |
| JPWO2024003992A1 (ja) | 2024-01-04 |
| CN119403638B (zh) | 2025-10-17 |
| CN119403638A (zh) | 2025-02-07 |
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