WO2008015727A1 - Plaque de renfort de rigidité et procédé de production de celle-ci - Google Patents
Plaque de renfort de rigidité et procédé de production de celle-ci Download PDFInfo
- Publication number
- WO2008015727A1 WO2008015727A1 PCT/JP2006/315151 JP2006315151W WO2008015727A1 WO 2008015727 A1 WO2008015727 A1 WO 2008015727A1 JP 2006315151 W JP2006315151 W JP 2006315151W WO 2008015727 A1 WO2008015727 A1 WO 2008015727A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel plate
- stiffener
- mold
- groove
- closed cross
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 19
- 230000002787 reinforcement Effects 0.000 title abstract 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 120
- 239000010959 steel Substances 0.000 claims abstract description 120
- 238000003466 welding Methods 0.000 claims abstract description 114
- 239000003351 stiffener Substances 0.000 claims description 76
- 239000002184 metal Substances 0.000 claims description 31
- 230000007935 neutral effect Effects 0.000 claims description 25
- 238000005452 bending Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007778 shielded metal arc welding Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/242—Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
-
- 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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- 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
- B23K9/0256—Seam welding; Backing means; Inserts for rectilinear seams for welding ribs on plates
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- 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
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12354—Nonplanar, uniform-thickness material having symmetrical channel shape or reverse fold [e.g., making acute angle, etc.]
Definitions
- the present invention relates to a stiffener plate and a method for manufacturing a stiffener plate, and more particularly to a technique for welding a stiffener (rib) to a steel plate.
- the steel slab is mainly composed of a steel plate
- the steel plate alone cannot provide sufficient rigidity. Therefore, it is usually composed of a stiffening plate having a stiffener (rib) on the back.
- rib stiffener
- a plate steel is used as a stiffening material, and a plurality of plate steels are arc-welded to a steel plate at regular intervals.
- a steel material having a V-shaped or U-shaped cross-section is reciprocally opposed to a pair of edges abutting against the steel plate so that it can be easily welded from the outside of the closed cross-sectional structure. Grooves are formed and arc welding is applied to the ladle or bowl-shaped groove to weld to the steel plate.
- U-shaped steel is used as a stiffener, there is also a technique for improving the strength by filling concrete inside the closed cross-sectional structure (see Japanese Patent Application Laid-Open No. 2001-248114).
- arc welding has a characteristic that when the temperature of the weld metal decreases after welding, the weld metal causes thermal shrinkage, and a residual stress in the tensile direction is generated in the metal member.
- problems such as a decrease in assembly accuracy of the member due to the welding residual stress, and a decrease in tensile strength, compression strength or fatigue strength of the member.
- the welding method disclosed in the above Japanese Patent Laid-Open No. 6-114587 is such that laser welding and arc welding are applied to the butt joint of plate members.
- laser welding is performed from the root part side (back side) of the plate member for the root part of the saddle-shaped groove, and the spread part is used for the plate part.
- Arc welding is performed from the expanded part side (front side) of the part.
- the stiffening plate is formed by welding the stiffener to the steel plate with a re-shaped or ridge-shaped groove as described above, the welding site is disclosed in the publication. Therefore, the welding method disclosed in the publication cannot be applied as it is.
- the present invention has been made to solve such problems, and an object of the present invention is to provide a stiffening plate that improves the welding quality of the stiffener and improves the fatigue strength.
- the object is to provide a method of manufacturing a stiffening plate.
- the stiffening plate of the present invention is a stiffening plate formed by welding one or more stiffeners on the surface of a steel plate. A ladle or ridge groove is formed at the edge that contacts the steel plate, and laser welding is applied to the root of the ladle or ridge groove, and arc welding is applied to the expanded portion. The weld metal is not loaded.
- the weld metal causes thermal shrinkage, resulting in residual stress in the tensile direction in the steel plate and in the stiffener.
- the edge of the rigid material is formed with a lave or bowl-shaped groove, the root of the lathe or 3 ⁇ 4J-shaped groove is used to prevent melt-through or to prevent melt-through. If the part is not welded to the part and the steel plate facing it, a part (undissolved part) is generated, and a gap is formed between the root part and the steel sheet, and cracks are likely to occur in the steel sheet.
- the stiffener is a closed cross-section stiffener that forms a closed cross-section structure on the surface of the steel plate in cooperation with the steel plate.
- a ladle or a mold groove is formed by expanding outwardly of the closed cross-sectional structure at an edge portion that contacts the steel plate to form the closed cross-sectional structure, and a root portion of the lathe or mold groove.
- arc welding is applied to the expanded portion and the weld metal is loaded.
- the stiffener is a closed cross-section stiffener that forms a closed cross-section structure on the surface of the steel plate in cooperation with the steel plate. If the edge that forms a closed cross-section structure in contact with the steel plate is expanded outwardly of the closed cross-section structure to form a ladle or ridge groove, only the outer force of the closed cross-section structure is welded. In particular, melt-through may occur, or in order to prevent melt-through, the root portion of the tip of the mold or ridge-type groove and the undissolved portion will occur in the steel plate facing it. A gap is formed between the steel plate and the steel sheet, and cracks are likely to occur in the steel plate.
- the root portion does not reach a neutral plane in the plate thickness direction of the stiffener, and the widened portion is on the root portion side. Power Expand beyond the neutral plane and do it! /.
- the method for manufacturing a stiffening plate according to the present invention is a method for manufacturing a stiffening plate formed by welding one or more stiffeners on a surface of a steel plate, wherein the stiffening plate is in contact with the steel plate.
- a first step of forming a mold or a groove on the edge of the material, a second step of performing laser welding on the root of the mold or the groove of the mold, and the second step And a third step of performing arc welding on the expanded portion of the ladle or bowl-shaped groove and loading the weld metal.
- the weld metal causes thermal shrinkage, resulting in residual stress in the tensile direction in the steel plate and the stiffener, and in addition, If the edge of the rigid material is formed with a lave or bowl groove, melt-through occurs or the root of the la-type or 3 ⁇ 4J-groove tip to prevent melt-through. If the welded portion is not welded to the steel plate and the steel plate opposite to the steel plate, an unmelted portion is generated, and a gap is formed between the root portion and the steel plate, so that cracks are likely to occur in the steel plate.
- melt-through The occurrence of melt remaining part It is possible to prevent the occurrence of a gap between the root portion and the steel sheet, and to greatly reduce the degree of cracking. Thereby, the welding quality can be improved and the fatigue strength can be improved.
- the stiffener is a closed cross-section stiffener that forms a closed cross-sectional structure on the surface of the steel plate in cooperation with the steel plate.
- the cross-section stiffeners it is preferable to expand the outer side of the closed cross-section structure at the edge that contacts the steel plate to form the closed cross-section structure to form a ladle or a mold groove.
- the stiffener is a closed cross-section stiffener that forms a closed cross-section structure in cooperation with the steel plate on the surface of the steel plate, and the steel plate of the closed cross-section stiffener If the rim or ridge groove is formed on the edge that forms the closed cross-section structure by abutting against the outer side of the closed cross-section structure, the outer shape of the closed cross-section structure Since welding work cannot be performed, melt melt occurs, or a melted portion is generated in the root part of the tip of the mold or the groove of the mold and the steel plate facing it in an attempt to prevent melt through.
- the closed cross-section stiffener is in contact with the steel sheet and forms a closed cross-sectional structure. Expand to the outer side of the cross-sectional structure to form a Le-shaped or ⁇ J-shaped groove (first step), and laser weld the root (Second process), and then melt welding and unmelted parts are generated by arc welding and filling the welded metal (third process). This can be prevented and the degree of cracking can be greatly reduced. As a result, the weld quality can be improved and the fatigue strength can be improved while the rigidity of the stiffening plate is sufficiently secured by the closed cross-sectional structure.
- the root portion does not reach a neutral surface in the plate thickness direction of the stiffener, and the widened portion has the root portion side force. It is better to form a ladle or a grooving groove so that it spreads beyond.
- a bending type laser welding apparatus that bends the laser beam collected by the convex lens by a plane mirror is used, and the bending laser welding apparatus causes a laser along the surface of the steel sheet. It is preferable to perform laser welding on the root portion from the expanded portion side of the mold or the groove of the mold by irradiating light.
- the edge of the stiffener can be obtained by using a bending type laser welding apparatus that bends the laser beam condensed by the convex lens by the plane mirror. Laser-welding can be easily and reliably applied to the root portion of the laminar or «J-shaped groove widened portion formed on the root.
- a bending type laser welding apparatus that condenses and bends laser light with a parabolic mirror or a spherical mirror is used, and the surface of the steel sheet is formed by the bending type laser welding apparatus. It is preferable that laser welding is applied to the root portion of the expanded or side groove of the mold or groove by irradiating a laser beam along the root.
- stiffening can be achieved by using a bending type laser welding apparatus that focuses and bends the laser beam with a parabolic mirror or a spherical mirror. Laser welding can be performed easily and reliably from the widened part of the mold or groove on the edge of the material to the root part.
- FIG. 1 is a diagram showing a stiffening plate according to the present invention
- FIG. 3 Sectional view along the ⁇ - ⁇ line in Fig. 2,
- FIG. 6 A diagram showing a bending type laser single welding apparatus in which a laser beam condensed by a convex lens is bent by a plane mirror
- FIG. 7 is a diagram showing a bending type laser welding apparatus in which a laser beam is condensed and bent by a parabolic mirror or a spherical mirror
- FIG. 8 is an enlarged view of the weld.
- FIG. 1 shows a stiffening plate according to the present invention
- FIG. 2 shows a partially enlarged view of the stiffening plate of FIG. 1
- FIG. 3 shows an A in FIG. — Cross-sectional views along line A are shown. The following explanation is based on these figures.
- the stiffener plate is used for various purposes such as ship decks and structures.
- the stiffener plate is applied to, for example, a steel deck (deck plate) of a bridge.
- a case will be described as an example.
- the stiffening plate has a plurality of stiffeners (ribs, closed cross-section stiffeners) 20 on one surface (rear surface) of the steel plate 10 at regular intervals. Arranged.
- the steel plate 10 is, for example, a flat plate having a predetermined plate thickness tl (for example, 12 mm), and the stiffener 20 is, for example, a flat plate having a predetermined plate thickness t2 (for example, 6 to 8 mm) matched to the width dimension of the steel plate 10. It is a section steel with a U-shaped section that has been cut and bent.
- the pair of edges 22 and 22 of the stiffener 20 are brought into contact with the steel plate 10 and are welded over the entire length of the stiffener 20 by laser welding and arc welding. Formed. Thereby, a closed cross-sectional structure is formed from the steel plate 10 and the stiffener 20.
- FIG. 4 a manufacturing process of the stiffening plate for welding the stiffener 20 to the steel plate 10 is illustrated.
- the manufacturing method of the stiffening plate will be described in detail with reference to FIG.
- a pair of edge portions 22, 22 that contact the steel plate 10 to form a closed cross-section structure is expanded outwardly of the closed cross-section structure and welded.
- the first and second mold grooves 24 and 24 are formed (first step).
- the ledge-shaped grooves 24, 24 are formed by a part of the inner side of the closed cross-section structure that contacts the steel plate 10 out of the edges 22, 22 of the stiffener 20.
- the chamfers are left so that they remain as root parts 26 and 26, respectively.
- the lathe-shaped grooves 24 and 24 are configured to expand so as to be opposite to each other and come into contact with the steel plate 10 at the root portions 26 and 26.
- the stiffener 20 can be easily arc-welded by the outer force of the stiffener 20 due to the presence of the mold grooves 24 and 24.
- the lathe-shaped grooves 24, 24 have the root portions 26, 26 that do not reach the neutral plane X in the plate thickness direction of the steel plate 10, and the expanded portions 28 , 28 expands beyond the neutral plane X.
- a laser beam R such as a YAG laser is applied by the laser welding machine 40 from the expanded portions 28 and 28 side, that is, from the outer side of the closed section structure. Irradiation is directed toward the route portions 26 and 26, and the route portions 26 and 26 are welded to the steel plate 10.
- a bending type laser welding apparatus 41 that bends the laser light R collected by the convex lens 42 by the plane mirror 44 is used. That is, by using the bending type laser welding apparatus 41, the laser beam R can be bent at a free angle (eg, 90 ° in this case) and irradiated along the surface of the steel plate 10. Even when the stiffener 20 is welded on the surface, laser welding can be reliably performed by irradiating the laser beam R to the root portions 26 and 26 easily.
- a free angle eg, 90 ° in this case
- a bending type laser welding apparatus 41 of a type in which the laser light R collected by the convex lens 42 is bent by the flat mirror 44 is used, but as shown in FIG.
- the laser beam R may be collected and bent by a parabolic mirror or a spherical mirror 44 ', and a bending type laser welding apparatus 41' of the type may be used!
- the weld metal rod 32 is inserted into the widened portions 28 and 28 of the ladle grooves 24 and 24, and is melted by arc discharge.
- the arc welding is carried out by one-pass construction or two-pass construction while melting the steel plate 10 and the edges 22 and 22 of the genus at the periphery (third process).
- the root portions 26, 26 of the ladle grooves 24, 24 are welded to the steel plate 10 by laser welding, and are expanded by arc welding.
- the open portions 28, 28 are welded to the steel plate 10, and weld metal is loaded into the expanded portions 28, 28 to form a weld metal stack 30.
- the root portions 26, 2 When 6 is welded to the steel plate 10 by laser welding, it is not necessary to weld the root portions 26 and 26 by arc welding. That is, if arc welding is applied only to the expanded portions 28, 28, it is possible to complete the arc welding without making the arc discharge so strong.
- the weld metal stack 30 is formed in the widened portions 28, 28 of the mold groove 24, 24 by arc welding as described above, the weld metal stack 30 is cooled. Heat shrink. When the weld metal deposit 30 contracts, the weld metal deposit 30 changes from a liquid state to a solid phase with cooling, so that the edges 22 and 22 of the steel plate 10 and the stiffener 20 are pulled. Residual tensile stress is generated as weld residual stress in the interior and stiffener 20
- the root portions 26, 26 and the steel plate 10 are welded by laser welding, so that the root portions 26, 26 and the steel plate facing the root portions 26, 26 are provided. Since the above unmelted portion does not occur in the portion 10, a gap is formed between the root portions 26, 26 and the steel plate 10, which can greatly reduce the degree of crack generation.
- the stiffening plate according to the present invention it is possible to improve the weld quality by realizing complete penetration while eliminating the occurrence of melt-through in the root portions 26, 26, and to generate cracks. It is possible to suppress fatigue and improve fatigue strength.
- the root portions 26 and 26 do not reach the neutral plane X in the thickness direction of the steel plate 10, and the expanded portions 28 and 28 expand beyond the neutral plane X.
- the weld metal overlay 30 bows to heat shrinkage.
- Neutral surface when waking up Residual stress in the tensile direction is generated in the steel plate 10 and the stiffener 20 only on one side of X, and a force that peels off laser welding acts between the root portions 26 and 26 and the steel plate 10 due to the lever principle.
- the expanded portions 28 and 28 are also expanded beyond the neutral surface X on the root portion 26 and 26 side, the neutral surface can be obtained even if the weld metal overlay 30 is thermally contracted. In the vicinity of X, residual stress in the tensile direction can be generated in the steel plate 10 and the stiffener 20. That is, as indicated by an arrow in FIG. 8, a compressive force can be applied between the root portions 26 and 26 and the steel plate 10 by the heat shrinkage of the weld metal stack 30.
- the bending type laser welding apparatus 41 or 41 ' is used as the laser welding machine 40, and the laser beam R is bent to follow the surface of the steel plate 10. Therefore, even if the stiffener 20 is welded on the surface of the steel plate 10 instead of a simple butted welding of the plate member, Laser welding can be easily performed by irradiating the laser beam R easily to the route parts 26 and 26.
- the force that forms the ledges 24, 24 on the edges 22, 22 of the stiffener 20 may be these dies.
- a U-shaped section steel is used as the stiffener 20 to form a closed section structure, but a V-shaped section steel may be used.
- the stiffener 20 does not necessarily have to have a closed cross-sectional structure, and the present invention can be satisfactorily applied even when I-shaped steel or the like is erected on the steel plate 10.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Laser Beam Processing (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06782029.0A EP2047935B1 (en) | 2006-07-31 | 2006-07-31 | Method of producing a stiffened plate |
PCT/JP2006/315151 WO2008015727A1 (fr) | 2006-07-31 | 2006-07-31 | Plaque de renfort de rigidité et procédé de production de celle-ci |
CNA2006800557697A CN101505902A (zh) | 2006-07-31 | 2006-07-31 | 加强板及加强板的制造方法 |
US12/374,951 US20090258245A1 (en) | 2006-07-31 | 2006-07-31 | Stiffened plate and a method of producing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/315151 WO2008015727A1 (fr) | 2006-07-31 | 2006-07-31 | Plaque de renfort de rigidité et procédé de production de celle-ci |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008015727A1 true WO2008015727A1 (fr) | 2008-02-07 |
Family
ID=38996915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/315151 WO2008015727A1 (fr) | 2006-07-31 | 2006-07-31 | Plaque de renfort de rigidité et procédé de production de celle-ci |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090258245A1 (ja) |
EP (1) | EP2047935B1 (ja) |
CN (1) | CN101505902A (ja) |
WO (1) | WO2008015727A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013091912A (ja) * | 2011-10-24 | 2013-05-16 | Highway Technology Research Center | 鋼床版の溶接部の補修方法及び補修装置 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101817115B (zh) * | 2010-04-30 | 2012-04-18 | 唐山轨道客车有限责任公司 | 焊接坡口搭接方法 |
CN102139398B (zh) * | 2011-04-15 | 2013-06-05 | 中铁山桥集团有限公司 | 正交异性板u形肋角焊缝双面焊方法 |
CN102520136B (zh) * | 2011-12-20 | 2014-09-24 | 长安大学 | 侧密封的地层变形模拟试验平台支撑面板 |
JP6335602B2 (ja) | 2014-04-14 | 2018-05-30 | 三菱重工業株式会社 | レーザ溶接方法 |
JP6451476B2 (ja) * | 2015-04-24 | 2019-01-16 | 新日鐵住金株式会社 | 鋼床版 |
WO2017034475A1 (en) * | 2015-08-26 | 2017-03-02 | Agency For Science, Technology And Research | Method of forming an elongated body with an embedded channel |
JP6705336B2 (ja) * | 2016-08-12 | 2020-06-03 | 日本製鉄株式会社 | 鋼床版の疲労亀裂発生抑制方法、鋼床版の製造方法、および内面押圧装置 |
WO2018188248A1 (zh) * | 2017-04-11 | 2018-10-18 | 中车青岛四方机车车辆股份有限公司 | 一种梁结构以及梁结构的复合焊接方法 |
JP7202464B2 (ja) * | 2019-07-24 | 2023-01-11 | 株式会社Ihiインフラシステム | 補修用レーザ溶接方法及び補修用レーザ溶接装置 |
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- 2006-07-31 CN CNA2006800557697A patent/CN101505902A/zh active Pending
- 2006-07-31 US US12/374,951 patent/US20090258245A1/en not_active Abandoned
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JP2013091912A (ja) * | 2011-10-24 | 2013-05-16 | Highway Technology Research Center | 鋼床版の溶接部の補修方法及び補修装置 |
Also Published As
Publication number | Publication date |
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US20090258245A1 (en) | 2009-10-15 |
EP2047935A4 (en) | 2009-11-11 |
CN101505902A (zh) | 2009-08-12 |
EP2047935A1 (en) | 2009-04-15 |
EP2047935B1 (en) | 2013-05-08 |
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