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DE19961697A1 - Protective gas mixture used for laser welding aluminum materials contains nitrogen and helium - Google Patents

Protective gas mixture used for laser welding aluminum materials contains nitrogen and helium

Info

Publication number
DE19961697A1
DE19961697A1 DE19961697A DE19961697A DE19961697A1 DE 19961697 A1 DE19961697 A1 DE 19961697A1 DE 19961697 A DE19961697 A DE 19961697A DE 19961697 A DE19961697 A DE 19961697A DE 19961697 A1 DE19961697 A1 DE 19961697A1
Authority
DE
Germany
Prior art keywords
gas mixture
laser welding
protective gas
helium
aluminum materials
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.)
Ceased
Application number
DE19961697A
Other languages
German (de)
Inventor
Bernd Hildebrandt
Wolfgang Schagun
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Priority to DE19961697A priority Critical patent/DE19961697A1/en
Publication of DE19961697A1 publication Critical patent/DE19961697A1/en
Ceased 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
    • B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
    • B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special 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 atmosphere, e.g. in an enclosure
    • B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special 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 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
    • B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen

Landscapes

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

Abstract

Protective gas mixture contains 30-70 volume % nitrogen and a balance of helium. Preferred Features: The nitrogen is present in an amount of 45-60 volume %.

Description

Die Erfindung betrifft ein Schutzgas zum Laserschweißen von Aluminium- Werkstoffen.The invention relates to a protective gas for laser welding of aluminum Materials.

Bei den bisher zum Laserschweißen von Aluminium-Werkstoffen üblicherweise eingesetzten Helium-Schutzgasen treten beim Schweißprozeß Metalldampfplasmen auf, welche eine optimale Energieeinkopplung unterbinden, sodass durch einen ungenügenden Einbrand die Schweißleistung verringert wird und außerdem eine unkontrollierte und Störungen bei den sensorischen Systemen zur Schweißprozeßüberwachung hervorrufende Metalldampfbildung erfolgt.Usually used for laser welding of aluminum materials Protective helium gases used occur during the welding process of metal vapor plasmas on, which prevent an optimal energy coupling, so that one insufficient penetration the welding performance is reduced and also a uncontrolled and malfunctions in the sensory systems Welding process monitoring causing metal vapor formation.

Der Erfindung liegt die Aufgabe zugrunde, ein Schutzgasgemisch zum Laserschweißen von Aluminium-Werkstoffen zur Verfügung zu stellen, welches eine verbesserte Schweißleistung bei optimaler Schweißqualität gewährleistet.The invention has for its object to provide a protective gas mixture To provide laser welding of aluminum materials, which is a improved welding performance with optimal welding quality guaranteed.

Die Aufgabe wird gelöst mit einem Schutzgasgemisch, dass einen Volumenanteil von 30 bis 70% N2, Rest He, enthält.The object is achieved with a protective gas mixture which contains a volume fraction of 30 to 70% N 2 , balance He.

Ein in der Praxis zum Laserschweißen von Aluminium-Werkstoffen erfolgreich erprobtes Schutzgasgemisch enthält 45-60% Stickstoff, Rest Helium.A successful practice in laser welding of aluminum materials proven inert gas mixture contains 45-60% nitrogen, balance helium.

Schweißversuche mit dem erfindungsgemäßen Schutzgasgemisch beim Laserschweißen von Aluminium-Werkstoffen haben sowohl hinsichtlich der Verbesserung des Einbrandverhaltens und der Verringerung der unkontrollierten Metalldampfbildung zu guten Ergebnissen und somit zu einer optimierten Schweißleistung/-qualität geführt.Welding tests with the protective gas mixture according to the invention Laser welding of aluminum materials have both in terms of Improvement of penetration behavior and reduction of uncontrolled Metal vapor formation for good results and thus an optimized one Welding performance / quality led.

Claims (2)

1. Schutzgasgemisch zum Laserschweißen von Aluminium-Werkstoffen, dadurch gekennzeichnet, dass es einen Volumenanteil von 30 bis 70% N2; Rest He, enthält.1. shielding gas mixture for laser welding of aluminum materials, characterized in that it has a volume fraction of 30 to 70% N 2 ; Rest He, contains. 2. Schutzgasgemisch nach Anspruch 1, dadurch gekennzeichnet, dass der Volumenanteil an N2 45-60% beträgt.2. shielding gas mixture according to claim 1, characterized in that the volume fraction of N 2 is 45-60%.
DE19961697A 1999-12-21 1999-12-21 Protective gas mixture used for laser welding aluminum materials contains nitrogen and helium Ceased DE19961697A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19961697A DE19961697A1 (en) 1999-12-21 1999-12-21 Protective gas mixture used for laser welding aluminum materials contains nitrogen and helium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19961697A DE19961697A1 (en) 1999-12-21 1999-12-21 Protective gas mixture used for laser welding aluminum materials contains nitrogen and helium

Publications (1)

Publication Number Publication Date
DE19961697A1 true DE19961697A1 (en) 2001-07-05

Family

ID=7933595

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19961697A Ceased DE19961697A1 (en) 1999-12-21 1999-12-21 Protective gas mixture used for laser welding aluminum materials contains nitrogen and helium

Country Status (1)

Country Link
DE (1) DE19961697A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371444A1 (en) * 2002-06-14 2003-12-17 L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Use of helium/nitrogen gaseous mixtures in laser welding up to 8 kW
EP1371445A1 (en) * 2002-06-14 2003-12-17 L'Air Liquide S. A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Use of helium/nitrogen gaseous mixture in laser welding up to 12 kW
US6831248B2 (en) * 2002-06-14 2004-12-14 L'air Liquide, S.A. Use of helium/nitrogen gas mixtures for the laser welding of stainless steel pipes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645746A1 (en) * 1996-11-06 1998-05-07 Aga Ab Process and process gas for laser welding of metallic workpieces

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645746A1 (en) * 1996-11-06 1998-05-07 Aga Ab Process and process gas for laser welding of metallic workpieces

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1371444A1 (en) * 2002-06-14 2003-12-17 L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Use of helium/nitrogen gaseous mixtures in laser welding up to 8 kW
EP1371445A1 (en) * 2002-06-14 2003-12-17 L'Air Liquide S. A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Use of helium/nitrogen gaseous mixture in laser welding up to 12 kW
FR2840833A1 (en) * 2002-06-14 2003-12-19 Air Liquide USE OF GAS MIXTURES HELIUM / NITROGEN IN LASER WELDING UP TO 8 KW
FR2840834A1 (en) * 2002-06-14 2003-12-19 Air Liquide USE OF GAS MIXTURES HELIUM / NITROGEN IN LASER WELDING UP TO 12 KW
US6770841B2 (en) 2002-06-14 2004-08-03 L'Air Liquide, Société Anonyme {overscore (a)} Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Use of helium/nitrogen gas mixtures in up to 8kW laser welding
US6831248B2 (en) * 2002-06-14 2004-12-14 L'air Liquide, S.A. Use of helium/nitrogen gas mixtures for the laser welding of stainless steel pipes
US7038163B2 (en) 2002-06-14 2006-05-02 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Use of helium/nitrogen gas mixtures in up to 12 kW laser welding

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection