Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2017156723) REMOTE LASER WELDING OF OVERLAPPING METAL WORKPIECES AT FAST SPEEDS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/156723 International Application No.: PCT/CN2016/076457
Publication Date: 21.09.2017 International Filing Date: 16.03.2016
IPC:
B23K 26/20 (2014.01) ,B23K 103/04 (2006.01) ,B23K 103/10 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26
Working by laser beam, e.g. welding, cutting, boring
20
Bonding, e.g. welding
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
103
Materials to be soldered, welded or cut
02
Iron or ferrous alloys
04
Steel alloys
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
103
Materials to be soldered, welded or cut
08
Non-ferrous metals or alloys
10
Aluminium or alloys thereof
Applicants:
YANG, David [CN/CN]; CN (BZ)
GM GLOBAL TECHNOLOGY OPERATIONS LLC [US/US]; 300 Renaissance Center P.O. Box 300 Detroit, Michigan 48265-3000, US
Inventors:
YANG, David; CN
TAO, Wu; CN
Agent:
CHINA PATENT AGENT (H.K.) LTD.; 22/F., Great Eagle Center 23 Harbour Road, Wanchai Hong Kong, CN
Priority Data:
Title (EN) REMOTE LASER WELDING OF OVERLAPPING METAL WORKPIECES AT FAST SPEEDS
(FR) SOUDAGE PAR LASER À DISTANCE DE PIÈCES MÉTALLIQUES SE CHEVAUCHANT À VITESSES RAPIDES
Abstract:
(EN) A method of laser welding a workpiece stack-up (10) that includes at least two overlapping metal workpieces (12, 14) comprises advancing a laser beam (24) relative to a plane of a top surface (20) of the workpiece stack-up (10) from a start point (84) to an end point (86) along a beam travel pattern (78) at a high laser beam travel speed of greater than 8 meters per minute. The two or more overlapping metal workpieces (12, 14) may be steel workpieces or they may be aluminum workpieces, and at least one of the metal workpieces (12, 14) includes a surface coating (40). Advancing the laser beam (24) along the beam travel pattern (78) forms a weld joint (76), which includes resolidified composite workpiece material derived from each of the metal workpieces (12, 14) penetrated by a molten weld pool (80), that fusion welds the metal workpieces (12, 14) together. The relatively high laser beam travel speed contributes to improve strength properties of the weld joint (76).
(FR) L’invention concerne un procédé de soudage par laser d'un empilement de pièces (10) comprenant au moins deux pièces métalliques se chevauchant (12, 14) consistant à faire progresser un faisceau laser (24) par rapport à un plan d'une surface supérieure (20) de l'empilement de pièces (10) d'un point de départ (84) jusqu'à un point de fin (86) le long d'un modèle de déplacement de faisceau (78) à une vitesse de déplacement de faisceau laser élevée de plus de 8 mètres par minute. Les deux pièces métalliques ou plus se chevauchant (12, 14) peuvent être des pièces en acier ou peuvent être des pièces en aluminium, et au moins une des pièces métalliques (12, 14) comprend un revêtement de surface (40). La progression du faisceau laser (24) le long du modèle de déplacement du faisceau (78) forme un joint soudé (76), comprenant le matériau resolidifié de la pièce composite dérivé de chacune des pièces métalliques (12, 14) dans lesquelles a pénétré un bain de soudure fondu (80) qui soude ensemble par fusion les pièces métalliques (12, 14). La vitesse de déplacement du faisceau laser relativement élevée contribue à améliorer les propriétés de résistance du joint soudé (76).
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)