IT1250237B - Metodo e dispositivo per alimentare un gas di copertura su pezzi sottoposti a lavorazione laser. - Google Patents

Metodo e dispositivo per alimentare un gas di copertura su pezzi sottoposti a lavorazione laser.

Info

Publication number
IT1250237B
IT1250237B ITTO910933A ITTO910933A IT1250237B IT 1250237 B IT1250237 B IT 1250237B IT TO910933 A ITTO910933 A IT TO910933A IT TO910933 A ITTO910933 A IT TO910933A IT 1250237 B IT1250237 B IT 1250237B
Authority
IT
Italy
Prior art keywords
laser processing
gas
feeding
area
jet
Prior art date
Application number
ITTO910933A
Other languages
English (en)
Inventor
Rocca Aldo Vittorio La
Original Assignee
Altec Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Altec Srl filed Critical Altec Srl
Priority to ITTO910933A priority Critical patent/IT1250237B/it
Publication of ITTO910933A0 publication Critical patent/ITTO910933A0/it
Priority to DE69220241T priority patent/DE69220241T2/de
Priority to PCT/IT1992/000151 priority patent/WO1993010937A1/en
Priority to EP92924861A priority patent/EP0621817B1/en
Publication of ITTO910933A1 publication Critical patent/ITTO910933A1/it
Application granted granted Critical
Publication of IT1250237B publication Critical patent/IT1250237B/it

Links

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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
    • B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure in an atmosphere of particular gases
    • 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
    • B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
    • B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure in an atmosphere of particular gases
    • B23K26/125—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure in an atmosphere of particular gases of mixed gases
    • 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
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
    • 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
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/1435—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor involving specially adapted flow-control means
    • B23K26/1437—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor involving specially adapted flow-control means for flow-rate control
    • 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
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/1462—Nozzles; Features related to nozzles
    • B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
    • B23K26/147—Features outside the nozzle for feeding the fluid stream towards the workpiece
    • 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
    • B23K26/26—Seam welding of rectilinear seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Laser Beam Processing (AREA)

Abstract

In un'apparecchiatura (10) per la lavorazione laser di pezzi (18), in cui un fascio laser (11) è diretto in modo da incidere su una zona (13) di una superficie in lavorazione (14) sostanzialmente perpendicolarmente ad essa, l'alimentazione di un getto (21) di gas di copertura si effettua in modo da lambire la zona (13) della superficie (14) in direzione trasversale a quella del fascio laser (11) e con una elevata velocità tale da eliminare sostanzialmente ogni alterazione delle proprietà fisiche e/o chimiche del gas. Il getto (21) viene convogliato mediante un condotto (26) a parete solida, il quale comprende due aperture trasversali (29, 31) per consentire il passaggio del fascio (11) verso la zona (13), ed un ugello (32) atto ad imprimere al getto di gas (21) una velocità appropriata.(Figura 2)
ITTO910933A 1991-11-29 1991-11-29 Metodo e dispositivo per alimentare un gas di copertura su pezzi sottoposti a lavorazione laser. IT1250237B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITTO910933A IT1250237B (it) 1991-11-29 1991-11-29 Metodo e dispositivo per alimentare un gas di copertura su pezzi sottoposti a lavorazione laser.
DE69220241T DE69220241T2 (de) 1991-11-29 1992-11-27 Verfahren und vorrichtung zum abschirmen von einem mit einem laser bearbeitetes werkstueck mit gas
PCT/IT1992/000151 WO1993010937A1 (en) 1991-11-29 1992-11-27 Method and device for gas shielding laser processed workpieces
EP92924861A EP0621817B1 (en) 1991-11-29 1992-11-27 Method and device for gas shielding laser processed workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO910933A IT1250237B (it) 1991-11-29 1991-11-29 Metodo e dispositivo per alimentare un gas di copertura su pezzi sottoposti a lavorazione laser.

Publications (3)

Publication Number Publication Date
ITTO910933A0 ITTO910933A0 (it) 1991-11-29
ITTO910933A1 ITTO910933A1 (it) 1993-05-29
IT1250237B true IT1250237B (it) 1995-04-03

Family

ID=11409752

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910933A IT1250237B (it) 1991-11-29 1991-11-29 Metodo e dispositivo per alimentare un gas di copertura su pezzi sottoposti a lavorazione laser.

Country Status (4)

Country Link
EP (1) EP0621817B1 (it)
DE (1) DE69220241T2 (it)
IT (1) IT1250237B (it)
WO (1) WO1993010937A1 (it)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA961930A (en) * 1971-12-30 1975-01-28 Edward V. Locke Welding with a laser beam
US4000392A (en) * 1974-07-01 1976-12-28 United Technologies Corporation Fusion zone purification by controlled laser welding
GB1542128A (en) * 1976-08-03 1979-03-14 Boc Ltd Laser welding apparatus
IT1165636B (it) * 1979-03-05 1987-04-22 Fiat Auto Spa Metodo ed apparecchio per il controllo dei gas di copertura utilizzati nelle lavorazioni a mezzo di laser di potenza su pezzi metallici

Also Published As

Publication number Publication date
DE69220241D1 (de) 1997-07-10
WO1993010937A1 (en) 1993-06-10
ITTO910933A1 (it) 1993-05-29
EP0621817B1 (en) 1997-06-04
DE69220241T2 (de) 1998-01-22
ITTO910933A0 (it) 1991-11-29
EP0621817A1 (en) 1994-11-02

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19951229