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1. WO2022073540 - METHOD AND DEVICE FOR BEAM WELDING

Publication Number WO/2022/073540
Publication Date 14.04.2022
International Application No. PCT/DE2021/100746
International Filing Date 09.09.2021
IPC
B23K 26/08 2014.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
08Devices involving relative movement between laser beam and workpiece
B23K 26/26 2014.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
20Bonding
21by welding
24Seam welding
26of rectilinear seams
B23K 15/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
15Electron-beam welding or cutting
B23K 26/06 2014.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
B23K 26/067 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
067Dividing the beam into multiple beams, e.g. multi-focusing
H01M 8/00 2016.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
CPC
B23K 15/002
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
15Electron-beam welding or cutting
002Devices involving relative movement between electronbeam and workpiece
B23K 15/006
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
15Electron-beam welding or cutting
0046Welding
0053Seam welding
006of rectilinear seams
B23K 2101/16
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2101Articles made by soldering, welding or cutting
16Bands or sheets of indefinite length
B23K 26/0608
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
0604by a combination of beams
0608in the same heat affected zone [HAZ]
B23K 26/0673
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
067Dividing the beam into multiple beams, e.g. multifocusing
0673into independently operating sub-beams, e.g. beam multiplexing to provide laser beams for several stations
B23K 26/0846
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
08Devices involving relative movement between laser beam and workpiece
083Devices involving movement of the workpiece in at least one axial direction
0838by using an endless conveyor belt
0846for moving elongated workpieces longitudinally, e.g. wire or strip material
Applicants
  • SCHAEFFLER TECHNOLOGIES AG & CO. KG [DE]/[DE]
Inventors
  • SCHLIRF, Simon
Priority Data
10 2020 126 540.909.10.2020DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN UND VORRICHTUNG ZUM STRAHLSCHWEIßEN
(EN) METHOD AND DEVICE FOR BEAM WELDING
(FR) PROCÉDÉ ET DISPOSITIF DE SOUDAGE PAR FAISCEAU
Abstract
(DE) Zwei Bleche (3, 4), insbesondere für eine Bipolarplatte, werden durch Strahlschweißen miteinander verbunden, indem sie einer Schweißvorrichtung (10) zugeführt werden, welche zwei Walzen (5, 6) umfasst, zwischen denen ein Spalt (Sp) gebildet ist, durch den die unter Krafteinwirkung aufeinanderliegenden Bleche (3, 4) bei Bildung einer Schweißverbindung gefördert werden, wobei die Breite der Walzen (5, 6) mindestens der Breite der miteinander zu verschweißenden Bereiche der beiden Bleche (3, 4) entspricht. Ein einen Energieeintrag bewirkender Strahl (LS) wird derart auf einen Zuführbereich der Bleche (3, 4) zu den Walzen (5, 6) gerichtet, dass die unter Krafteinwirkung aufeinanderliegenden Bleche (3, 4) unter Bildung einer Schweißverbindung durch den Spalt (Sp) gefördert werden. Der die Bleche (3, 4) lokal erhitzende Strahl (LS) wird phasenweise derart ausgelenkt, dass die Geschwindigkeit, mit welcher sich der Auftreffpunkt (AP) des Strahls (LS) in Axialrichtung der Walzen (5, 6) verlagert, größer als die Fördergeschwindigkeit der Bleche (3, 4) ist.
(EN) Two metal sheets (3, 4), in particular for a bipolar plate, are connected to one another by beam welding by being fed to a welding device (10), which comprises two rollers (5, 6), between which there is formed a gap (Sp), through which the metal sheets (3, 4), lying one on top of the other under the effect of force, are conveyed as a welded connection is being formed, wherein the width of the rollers (5, 6) corresponds at least to the width of the regions to be welded to one another of the two metal sheets (3, 4). A beam (LS) providing the effect of an energy input is directed onto a feeding region for the metal sheets (3, 4) to the rollers (5, 6) in such a way that the metal sheets (3, 4), lying one on top of the other under the effect of force, are conveyed through the gap (Sp), with a welded connection being formed in the process. The beam (LS), which locally heats the metal sheets (3, 4), is deflected in phases in such a way that the rate at which the point of impingement (AP) of the beam (LS) is displaced in the axial direction of the rollers (5, 6) is greater than the conveying rate of the metal sheets (3, 4).
(FR) Deux tôles (3, 4), en particulier pour une plaque bipolaire, sont jointes l’une à l’autre par soudage par faisceau, en étant amenées à un dispositif de soudage (10) qui comprend deux cylindres (5, 6) entre lesquels est formée une emprise (sp) dans laquelle les tôles (3, 4) empilées sous l'effet d'une force sont engagées de manière à former un joint soudé, la largeur des cylindres (5, 6) correspondant au moins à la largeur des zones des deux tôles (3, 4) à souder ensemble. Un faisceau (LS) produisant un apport d'énergie est dirigée vers les cylindres (5, 6) sur une zone d'amenée des tôles (3, 4), de telle sorte que les tôles (3, 4) empilées sous l'effet d'une force sont engagées dans l’emprise (sp) de manière à former un joint soudé. Le faisceau (LS) chauffant localement les tôles (3, 4) est dévié par phases de telle sorte que la vitesse à laquelle le point d'impact (AP) du faisceau (LS) se déplace dans la direction axiale des cylindres (5, 6) est supérieure à la vitesse d'acheminement des tôles (3, 4).
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