Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1997015417) METHOD AND APPARATUS FOR LASER CUTTING MATERIALS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/015417 International Application No.: PCT/US1996/017226
Publication Date: 01.05.1997 International Filing Date: 25.10.1996
Chapter 2 Demand Filed: 17.04.1997
IPC:
B23K 26/04 (2006.01) ,B23K 26/06 (2006.01) ,B23K 26/14 (2006.01) ,B23K 26/36 (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
02
Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
04
Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
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
02
Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06
Shaping the laser beam, e.g. by masks or multi-focusing
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
14
using a flow, e.g. a jet of gas, in conjunction with the laser beam
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
36
Removing material
Applicants:
E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, DE 19898, US (AllExceptUS)
KOBSA, Henry [US/US]; US (UsOnly)
Inventors:
KOBSA, Henry; US
Agent:
HAMBY, Jane, O.; E.I. du Pont de Nemours and Company Legal/Patent Records Center 1007 Market Street Wilmington, DE 19898, US
Priority Data:
9511695.827.10.1995EP
Title (EN) METHOD AND APPARATUS FOR LASER CUTTING MATERIALS
(FR) PROCEDE ET APPAREIL DE DECOUPAGE D'OBJETS AU LASER
Abstract:
(EN) An improved method and apparatus of cutting an object with a laser beam, comprising using a diode laser-pumped pulsed solid state laser having an average power output from about 2 to about 100 watts and delivering an average laser beam brightness of greater than 1012 W/m2*sr and a peak brightness of greater than 1013 W/m2*sr to the object. Objects cut with the laser cutting method having heat affected zones (HAZ) of less than 4 mm, and having substantially no microcracks.
(FR) L'invention porte sur un procédé et un appareil de découpage d'objets au laser recourant à un laser solide pulsé à pompage par diode laser d'une puissance de sortie moyenne d'environ 2 à environ 100 W et dirigeant sur l'objet un faisceau d'une brillance moyenne supérieure à 1012 W/m2*sr et atteignant des pics de 1013 W/m2*sr. Les objets découpés par ce procédé présentent des zones affectées par la chaleur de moins de 4 mm et sont sensiblement exempts de microfissures.
Designated States: CA, JP, KR, MX, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0857098US6163010JPH11513935CA2234895KR1019990067086