GB1385393A - Laser beam welding - Google Patents

Laser beam welding

Info

Publication number
GB1385393A
GB1385393A GB5157172A GB5157172A GB1385393A GB 1385393 A GB1385393 A GB 1385393A GB 5157172 A GB5157172 A GB 5157172A GB 5157172 A GB5157172 A GB 5157172A GB 1385393 A GB1385393 A GB 1385393A
Authority
GB
United Kingdom
Prior art keywords
workpiece
gas
laser
argon
workpieces
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB5157172A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avco Corp
Original Assignee
Avco Corp
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 Avco Corp filed Critical Avco Corp
Publication of GB1385393A publication Critical patent/GB1385393A/en
Expired legal-status Critical Current

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
    • B23K26/14—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
    • B23K26/14—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
    • B23K26/1423—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 the flow carrying an electric current

Landscapes

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

Abstract

1385393 Welding by fusion AVCO CORP 8 Nov 1972 [30 Dec 1971] 51571/72 Heading B3R In laser beam welding, a cloud created by interaction of the beam and the workpiece, and capable of absorbing and scattering the beam, is substantially swept away, during beam/workpiece relative movement, by gas blown through the beam slightly spaced from the zone of said interaction and preferably parallel to the workpiece. Gas used may be argon or nitrogen and may act as shielding gas to prevent oxidation. The laser may be continuous wave, e.g. gas dynamic or electrical discharge, or pulsed. The sweeping away of the cloud is for laser average powers exceeding 8 kW. Stainless and killed carbon steel workpieces are referred to. As shown, a beam 14 from a laser 11 is transmitted through a Cassegrain optical system 12 comprising elements 13, 16 and focussed on workpieces 15, 17. Either the workpieces are movable on a conventional table or the beam may be moved optically by a conventional mirror system in the system 12. Gas from a bottle 20 is metered at 21 and directed by a nozzle 22 through the beam. In Fig. 2 (not shown) a cylindrical copper gas nozzle emits less than 3 grams per second argon close and preferably parallel to the workpiece but at an acute angle to the weld joint line. In Fig. 3 (not shown) a rectangular cross-section nozzle emits less than 30 grams per second argon parallel to the workpiece and at right angles to the weld joint line.
GB5157172A 1971-12-30 1972-11-08 Laser beam welding Expired GB1385393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21394171A 1971-12-30 1971-12-30

Publications (1)

Publication Number Publication Date
GB1385393A true GB1385393A (en) 1975-02-26

Family

ID=22797126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5157172A Expired GB1385393A (en) 1971-12-30 1972-11-08 Laser beam welding

Country Status (9)

Country Link
JP (1) JPS4879592A (en)
CA (1) CA961930A (en)
CH (1) CH576836A5 (en)
DE (1) DE2254673A1 (en)
FR (1) FR2165916B1 (en)
GB (1) GB1385393A (en)
IL (1) IL40703A (en)
IT (1) IT973871B (en)
SE (1) SE389985B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1165636B (en) * 1979-03-05 1987-04-22 Fiat Auto Spa METHOD AND APPARATUS FOR THE CONTROL OF COVERING GASES USED IN THE WORKING BY MEANS OF POWER LASER ON METAL PIECES
JPS5827036B2 (en) * 1980-02-15 1983-06-07 新日本製鐵株式会社 Laser welding method
AT401247B (en) * 1991-02-15 1996-07-25 Schuoecker Dieter Dipl Ing Dr Laser-machining apparatus
IT1250237B (en) * 1991-11-29 1995-04-03 Altec Srl METHOD AND DEVICE FOR FEEDING A COVERING GAS ON PARTS SUBJECTED TO LASER PROCESSING.
US5981901A (en) * 1991-11-29 1999-11-09 La Rocca; Aldo Vittorio Method and device for gas shielding laser processed work pieces
DE20306599U1 (en) * 2003-04-29 2004-09-16 Kuka Schweissanlagen Gmbh Protective gas device for laser operating units as in motor vehicle body welding has outlet nozzles directed to the laser processing regions

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1335667A4 (en) * 1967-09-25 1969-01-31 Laser Tech Sa Method for drilling watch stones using laser radiation
JPS4425440Y1 (en) * 1967-12-29 1969-10-24
US3626141A (en) * 1970-04-30 1971-12-07 Quantronix Corp Laser scribing apparatus

Also Published As

Publication number Publication date
IT973871B (en) 1974-06-10
IL40703A0 (en) 1973-01-30
JPS4879592A (en) 1973-10-25
CH576836A5 (en) 1976-06-30
SE389985B (en) 1976-11-29
DE2254673A1 (en) 1973-07-05
FR2165916A1 (en) 1973-08-10
CA961930A (en) 1975-01-28
FR2165916B1 (en) 1977-08-26
IL40703A (en) 1977-10-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee