EP1940580A1 - Laserstrahlschweissverfahren mit einer steuerung für die bildung einer metalldampfkapillare - Google Patents

Laserstrahlschweissverfahren mit einer steuerung für die bildung einer metalldampfkapillare

Info

Publication number
EP1940580A1
EP1940580A1 EP06820314A EP06820314A EP1940580A1 EP 1940580 A1 EP1940580 A1 EP 1940580A1 EP 06820314 A EP06820314 A EP 06820314A EP 06820314 A EP06820314 A EP 06820314A EP 1940580 A1 EP1940580 A1 EP 1940580A1
Authority
EP
European Patent Office
Prior art keywords
gas
laser beam
welding
capillary
metal
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.)
Withdrawn
Application number
EP06820314A
Other languages
English (en)
French (fr)
Inventor
Francis Briand
Eric Verna
Sonia Slimani
Rémy Fabbro
Frédéric COSTE
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.)
Centre National de la Recherche Scientifique CNRS
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Centre National de la Recherche Scientifique CNRS
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Centre National de la Recherche Scientifique CNRS, Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Centre National de la Recherche Scientifique CNRS
Publication of EP1940580A1 publication Critical patent/EP1940580A1/de
Withdrawn legal-status Critical Current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
    • B23K26/1476—Features inside the nozzle for feeding the fluid stream through the nozzle
    • 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
    • B23K26/1436—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 pressure 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
    • B23K26/1435—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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B23K2103/05—Stainless steel
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof

Definitions

  • the invention relates to a laser welding process in which the hydrodynamics of the liquid bath are controlled by a gas flow focused on the capillary formed at the point of impact of the laser beam during welding.
  • a capillary or keyhole filled with metal vapors is formed in the material and allows a direct transfer of energy to the heart of the material.
  • the walls of the capillary are formed of molten metal and are maintained by a dynamic equilibrium established with the internal vapors. Depending on the movement, the molten metal bypasses the capillary to form a "liquid bath" at the back of the capillary.
  • 4684779 offer laser welding processes with assist gas.
  • One or more gas streams are sent to the parts to be welded to evacuate the gaseous impurities in the ambient atmosphere at the welding zone.
  • the gas flows are delivered under low pressure and serve only to establish a gaseous atmosphere protecting the welding zone.
  • the problem then is to improve the existing laser welding processes so as to increase the quality of the weld seams, avoiding the aforementioned harmful phenomena.
  • the solution of the invention must also be usable industrially, that is to say be simple architecture and have great flexibility of use, in particular not be limited to a welding direction.
  • the solution of the invention is a method of laser beam welding of at least one metal part, preferably two metal parts with each other, in which: a) a laser beam, a first gas flow and a welding nozzle provided with an outlet orifice, said orifice being traversed by the laser beam and by the first gas flow, and b) welding of the piece or parts by melting of the metal of the the part (s) to be welded, at the point of impact of the laser beam with the part (s) to be welded, with formation of a capillary or keyhole filled with metallic vapors.
  • the first flow of gas is directed only towards the opening of the metal vapor capillary and in a direction perpendicular to the workpiece or parts to be welded so as to exert a gaseous dynamic pressure and to maintain the keyhole opened by expanding it.
  • the term "opening of the capillary (or keyhole) of metal vapors" the capillary region on the surface of the sheet to be welded and through which escape the metal vapors.
  • the diagram of Figure 5 illustrates a longitudinal sectional view of the welding zone during laser beam welding process 10. It distinguishes, on the one hand, a representation of the capillary 11 from which escape metallic vapors 12 and, on the other hand, the liquid metal walls 14 which form a bath at the rear 13. The arrow designating the direction S of the welding.
  • the method of the invention may include one or more of the following features:
  • the first gas stream is used to exert a continuous and constant gaseous dynamic pressure on the opening of the vapor capillary.
  • the first gas stream is used to stabilize the flow of the molten metal liquid bath.
  • a second protective gas stream distributed peripherally to the first gas flow is used.
  • a second protective gas stream distributed coaxially with the first gas flow with respect to the axis of the laser beam is used.
  • the flow rate of the first gas is of the order of 10 to 20 l / min and the flow rate of the second gas is of the order of 20 to 30 l / min.
  • the nozzle is a coaxial nozzle.
  • the first and second gases are chosen from argon, helium, nitrogen and their mixtures, and possibly in a smaller proportion of CO 2 , oxygen or hydrogen.
  • the laser beam is generated by an Nd: YAG type laser generator, Ytterbium fiber or CO 2 fiber.
  • the welding nozzle is carried by a robotic arm.
  • the metal parts to be welded are carbon steel, coated or not, aluminum or stainless steel.
  • the welding nozzle delivering the first gas stream has a gas passage section of between 0.1 and 10 mm 2 .
  • the pressure of the first gas flow is between 1 and 10 kPa.
  • the present invention is therefore based on a stabilization of the flow of the liquid bath during welding, by acting on the opening of the keyhole via a first jet or "fast” gas flow directed towards or on said opening of the capillary so that exert a gaseous dynamic pressure at this location to stabilize the shape, or even enlarge, and thus solve the aforementioned problems.
  • the capillary remains open because the pressure of the first gas expands and the metal vapors generated in the capillary can escape without being disturbed by the nearby molten metal bath.
  • the number of projections is significantly reduced and the hydrodynamic flow of the liquid metal facilitated, leading to an improved weld seam appearance and reduced porosity in the weld since the metal vapors are no longer there or much less trapped.
  • a second, slower flow rate shielding gas jet as commonly used in laser welding, is peripherally distributed so as to protect the welding bath from oxidation by forming a gas shield or blanket around it. the welding area.
  • the solution of the invention therefore preferably implements a first jet of "fast" gas stabilization distributed symmetrically with respect to the axis of the laser beam directed or focused on the opening keyhole and a second gas jet "slow" coverage or protection of the welding area.
  • the focused gas is said to be “fast” if it possesses or acquires sufficient kinetic energy to exert sufficient dynamic pressure on the keyhole to keep it open.
  • the cover gas is said
  • the flow rates are of the order of 10 to 20 l / min for the first fast gas and
  • the passage section of the "fast" gas is typically between 0.1 and 10 mm 2 .
  • the gas passage diameter is just a few tenths of a millimeter higher than that of the laser beam at the outlet of the nozzle.
  • the gas flow rates involved depend directly on the density of the gas used to obtain an effective dynamic pressure. This pressure is typically of the order of a few kPa.
  • the jets or gas streams may be distributed by a single "double flow” type nozzle, that is to say distributing two coaxial gas streams relative to each other, also called “coaxial” nozzle, as shown in Figures 1 to 4.
  • This principle can be extended to several concentric gas streams, including three.
  • the fast focussing gas can thus be delivered by a plurality of appropriately arranged nozzles, for example four nozzles of small diameter, typically less than 3 mm, concurrent with an angle between 20 ° and 45 ° with respect to beam axis, positioned regularly distributed at the periphery of a conventional annular protection nozzle distributing the "slow" gas.
  • the identical gases are preferably used as first and second gas streams. However, these gases can also be different.
  • argon is generally used as shielding gas for the laser beam
  • CO 2 type laser welding helium is necessary to avoid the breakdown phenomenon.
  • gaseous mixtures of helium / nitrogen, helium / argon or any other helium-based mixture for beams derived from CO 2 type laser generators as well as any neutral gas for the beams. from laser generators YAG type or fiber laser type.
  • argon, nitrogen, helium or mixtures of these gases added in addition to one or more additional constituents in low content (a few%) such as oxygen, CO 2 , hydrogen.
  • Figures 1 to 4 show schematically several embodiments of "coaxial" nozzles according to the invention.
  • a coaxial nozzle is a nozzle formed of at least two concentric gas distribution circuits.
  • Figure 1 shows a first version of a coaxial nozzle.
  • the fast jet of gas is distributed in the center of the nozzle through a hole 1 of diameter between 0.2 and 3 mm towards the opening of the keyhole.
  • the cover gas is diffused in the crown 2 concentric with the opening 1.
  • the profile of the ring 2 can be chosen such that a wall effect is obtained, that is to say that the direction of flow slow gas follows the curvature of the wall as shown in vector 3.
  • FIG. 2 shows a nozzle version in which the wall effect is used to focus the flow of the fast gas along the axis of the laser beam.
  • three gas flow circuits are provided: an axial circuit 4 for a slow gas distribution and low flow, serving mainly to prevent the rise of pollution to the laser optics, a first peripheral circuit 5 channeling the fast gas to the opening of the keyhole and a second circuit 6 distributing the slow gas cover.
  • FIG. 3 illustrates an embodiment in which the gas blanket of the slow gas is widened by means of a "vortex" distribution, that is to say with a rotation component that tends to drive the gas horizontally out of the nozzle.
  • Figure 4 shows a nozzle in which the fast gas is accelerated through a nozzle, that is to say a convergent-divergent orifice.
  • a major advantage of the use of a coaxial nozzle lies in its ease of positioning and independence from the direction of movement of the welding head carrying the nozzle. This implies that it can, for example, go directly to the end of the arm of a robot in the case of an Nd: YAG laser welding where the laser beam is generated by a Nd: YAG type generator before to be routed via an optical fiber to the laser head carrying the nozzle.
  • a first jet of gas is accelerated and confined towards the opening of the capillary, which allows the flow to be changed. back of the capillary.
  • the capillary is then more open along the welding direction and the flow of the liquid bath is smooth, continuous and without any surface oscillation.
  • the weld bead is very smooth and the "chevron structure" characteristic of Nd: YAG laser welding can be completely eliminated.
  • the flow rate of the gas jet must be higher than a conventional flow but not too important either to avoid the ejection of molten metal.
  • An implementation of the invention also has the advantage of also leading to a significant increase in the penetration depth of welding.
  • the lengthening of the capillary also makes it possible to greatly reduce the porosities generated in the weld bead during laser welding.
  • the splashing of molten metal is attenuated and the phenomenon of metal droplet ejection can be completely eliminated.
  • This fast jet welding method is therefore suitable for laser welding applications of medium thickness, that is to say approximately 1 to 5 mm.
EP06820314A 2005-10-21 2006-10-19 Laserstrahlschweissverfahren mit einer steuerung für die bildung einer metalldampfkapillare Withdrawn EP1940580A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0553197A FR2892328B1 (fr) 2005-10-21 2005-10-21 Procede de soudage par faisceau laser avec controle de la formation du capillaire de vapeurs metalliques
PCT/FR2006/051058 WO2007045798A1 (fr) 2005-10-21 2006-10-19 Procede de soudage par faisceau laser avec controle de la formation du capillaire de vapeurs metalliques

Publications (1)

Publication Number Publication Date
EP1940580A1 true EP1940580A1 (de) 2008-07-09

Family

ID=36678516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06820314A Withdrawn EP1940580A1 (de) 2005-10-21 2006-10-19 Laserstrahlschweissverfahren mit einer steuerung für die bildung einer metalldampfkapillare

Country Status (7)

Country Link
US (1) US20090134132A1 (de)
EP (1) EP1940580A1 (de)
JP (1) JP2009512556A (de)
CN (1) CN101291773B (de)
BR (1) BRPI0617708A2 (de)
FR (1) FR2892328B1 (de)
WO (1) WO2007045798A1 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101896692B (zh) 2007-12-12 2014-03-12 霍尼韦尔国际公司 用于涡轮增压器的具有由径向构件定位的喷嘴环的可变喷嘴
FR2926032B1 (fr) * 2008-01-08 2010-08-27 Air Liquide Buse de soudage laser apte a stabiliser le keyhole.
JP2009166080A (ja) * 2008-01-16 2009-07-30 Hitachi Ltd レーザ溶接方法
WO2011055373A1 (en) * 2009-11-03 2011-05-12 The Secretary, Department Of Atomic Energy,Govt.Of India. Niobium based superconducting radio frequency (scrf) cavities comprising niobium components joined by laser welding; method and apparatus for manufacturing such cavities
JP2011167709A (ja) * 2010-02-17 2011-09-01 Mitsubishi Heavy Ind Ltd 溶接方法および超伝導加速器
CN102072794B (zh) * 2010-11-18 2012-06-13 湖南大学 模拟激光深熔焊接小孔内压力及其特性的检测方法
JP5902400B2 (ja) * 2011-04-26 2016-04-13 トヨタ自動車株式会社 レーザ溶接装置、レーザ溶接方法、鋼板積層体の製造方法及び積層体のレーザ溶接による溶接構造
CN102773591B (zh) * 2012-06-13 2016-01-13 上海妍杰机械工程有限公司 一种不锈钢焊接用保护气体
DE102012217082B4 (de) 2012-09-21 2016-06-16 Trumpf Laser Gmbh Laserbearbeitungskopf mit einer Ringdüse
DE102012025627B4 (de) 2012-09-21 2016-04-14 Trumpf Laser Gmbh Ringdüse für einen Laserbearbeitungskopf und Laserbearbeitungskopf damit
CN103831531B (zh) * 2012-11-23 2016-09-14 通用汽车环球科技运作有限责任公司 焊接接头
CN103071951A (zh) * 2012-12-21 2013-05-01 武汉市润之达石化设备有限公司 超低温不锈钢焊接的保护气体
CN103056524A (zh) * 2012-12-24 2013-04-24 长春轨道客车股份有限公司 未熔透面无氧化的激光搭接半熔透焊接方法
EP3013508B1 (de) * 2013-06-28 2020-04-15 TRUMPF Laser-und Systemtechnik GmbH Verfahren zur maschinellen bearbeitung, insbesondere zur maschinellen schweissbearbeitung und steuervorrichtung für eine einstelleinrichtung einer prozessgaszufuhr
DE102013015656B4 (de) * 2013-09-23 2016-02-18 Precitec Optronik Gmbh Verfahren zum Messen der Eindringtiefe eines Laserstrahls in ein Werkstück, Verfahren zum Bearbeiten eines Werkstücks sowie Laserbearbeitungsvorrichtung
DE102014203576A1 (de) 2014-02-27 2015-08-27 Trumpf Laser- Und Systemtechnik Gmbh Laserbearbeitungskopf mit einer werkstücknahen Crossjetdüse
DE112015002860T5 (de) * 2014-06-19 2017-02-23 Magna International Inc. Verfahren und Vorrichtung für laserunterstütztes Kraftreinigen
US20160023303A1 (en) * 2014-07-22 2016-01-28 Siemens Energy, Inc. Method for forming three-dimensional anchoring structures
CN107206553B (zh) * 2014-10-15 2019-11-05 自动工程公司 钢坯的焊接
CN205764438U (zh) * 2015-02-09 2016-12-07 司浦爱激光技术英国有限公司 激光焊缝和包括激光焊缝的物品
US10449560B2 (en) 2015-02-25 2019-10-22 Technology Research Association For Future Additive Manufacturing Optical processing nozzle and optical machining apparatus
DE102017117413B4 (de) * 2017-08-01 2019-11-28 Precitec Gmbh & Co. Kg Verfahren zur optischen Messung der Einschweißtiefe
JP6943703B2 (ja) * 2017-09-19 2021-10-06 技術研究組合次世代３Ｄ積層造形技術総合開発機構 ノズル、処理装置、及び積層造形装置
DE102018108824A1 (de) * 2018-04-13 2019-10-17 Rofin-Sinar Laser Gmbh Verfahren und Vorrichtung zum Laserschweißen
JP6810110B2 (ja) * 2018-08-24 2021-01-06 ファナック株式会社 加工条件調整装置及び機械学習装置
JP2022148017A (ja) * 2021-03-24 2022-10-06 株式会社東芝 溶接方法
CN116423050B (zh) * 2023-06-13 2023-09-19 成都永峰科技有限公司 一种用于航天航空薄壁曲面部件的焊接装置及其方法

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1591793A (en) * 1976-10-25 1981-06-24 Welding Inst Laser welding
JPS6053260A (ja) * 1983-09-01 1985-03-26 Toyota Motor Corp 車両用無段変速機の速度比制御装置
JPS61229491A (ja) * 1985-04-03 1986-10-13 Mitsubishi Electric Corp レ−ザ溶接用加工ヘツド
US4684779A (en) * 1986-01-22 1987-08-04 General Motors Corporation Laser welding metal sheets with associated trapped gases
WO1990011450A1 (en) * 1989-03-17 1990-10-04 Kazansky Khimiko-Tekhnologichesky Institut Imeni S.M.Kirova Gas-jet ejector
JP2623993B2 (ja) * 1991-02-28 1997-06-25 三菱電機株式会社 レーザ加工ヘッド
US5183989A (en) * 1991-06-17 1993-02-02 The Babcock & Wilcox Company Reduced heat input keyhole welding through improved joint design
US5187346A (en) * 1991-08-29 1993-02-16 General Motors Corporation Laser welding method
US5183992A (en) * 1991-08-29 1993-02-02 General Motors Corporation Laser welding method
US5293023A (en) * 1992-03-13 1994-03-08 Mitsui Petrochemical Industries, Ltd. Laser irradiation nozzle and laser apparatus using the same
IT1261304B (it) * 1993-06-21 1996-05-14 Lara Consultants Srl Processo di taglio mediante un fascio laser
JPH0819886A (ja) * 1994-07-01 1996-01-23 Sumitomo Metal Ind Ltd レーザ溶接ノズル
US6770840B2 (en) * 1997-03-28 2004-08-03 Nippon Steel Corporation Method of butt-welding hot-rolled steel materials by laser beam and apparatus therefor
FR2765129B1 (fr) * 1997-06-30 1999-10-01 Peugeot Procede de soudage de toles revetues par un faisceau d'energie, tel qu'un faisceau laser
JP3385361B2 (ja) * 2000-05-09 2003-03-10 北海道大学長 レーザ溶接方法及びレーザ溶接装置
JP3385363B2 (ja) * 2000-05-11 2003-03-10 北海道大学長 レーザ溶接方法、レーザ溶接装置及びレーザ溶接用ガスシールド装置
JP4394808B2 (ja) * 2000-06-28 2010-01-06 吉輝 細田 レーザ光とアークを用いた溶融加工装置
FR2822399B1 (fr) * 2001-03-26 2003-06-27 Commissariat Energie Atomique Installation de soudage au laser a forte puissance
FR2846581B1 (fr) * 2002-10-31 2006-01-13 Usinor Procede et dispositif de pointage d'un jet fin de fluide, notamment en soudage, usinage, ou rechargement laser
JP2004148374A (ja) * 2002-10-31 2004-05-27 Honda Motor Co Ltd 高密度エネルギービームによるアルミニウム又はアルミニウム合金から成る被溶接部材同士の貫通溶接方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007045798A1 *

Also Published As

Publication number Publication date
FR2892328A1 (fr) 2007-04-27
JP2009512556A (ja) 2009-03-26
BRPI0617708A2 (pt) 2011-08-02
FR2892328B1 (fr) 2009-05-08
US20090134132A1 (en) 2009-05-28
CN101291773A (zh) 2008-10-22
WO2007045798A1 (fr) 2007-04-26
CN101291773B (zh) 2011-09-14

Similar Documents

Publication Publication Date Title
EP1940580A1 (de) Laserstrahlschweissverfahren mit einer steuerung für die bildung einer metalldampfkapillare
EP1600245B1 (de) Vefahren zum Laserschweissen oder Hybriden Laser-Lichtbogenschweissen mit entstehenden rückseitigen Plasma
FR2908677A1 (fr) Procede de soudage par faisceau laser a penetration amelioree
CA2735142C (fr) Procede de soudage laser de type co2 avec buse a jet dynamique
EP1427564A1 (de) Hybridlaser-lichtbogenschweissverfahren mit gassdurchflusseinstellung
FR2600568A1 (fr) Ameliorations aux methodes de decoupe de pieces metalliques au laser
EP1215008A1 (de) Verfahren und Einrichtung zum Laserschneiden mit einem zweiflüssigen Doppelfokusschneidkopf
EP2802435B1 (de) Mig/wig oder mag/wig hybrid-schweissvorrichtung
FR2832337A1 (fr) Dispositif et procede de soudage hybride
WO2015059384A1 (fr) Buse laser a double flux gazeux
EP1436115A1 (de) Verfahren zum entzünden eines lichtbogens bei hybridlaserlichtbogenschweissen
WO2009068789A2 (fr) Soudage laser de pièces revêtues de zinc
JP2004009096A (ja) レーザ溶接装置
Kah et al. The influence of parameters on penetration, speed and bridging in laser hybrid welding
FR3010339A1 (fr) Procede de soudage par faisceau laser sur tole sandwich avec controle de l'ouverture du capillaire
Hamadou et al. Experimental study of CO 2 laser welding inside a groove—application to high thickness laser welding
FR2825305A1 (fr) Procede et installation de soudage laser avec buse laterale de distribution de gaz
FR2870765A1 (fr) Procede de soudage laser ou hybride laser-arc sans formation de plasma cote envers
JPH0866784A (ja) 高エネルギービーム溶接方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080326

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BRIAND, FRANCIS

Inventor name: SLIMANI, SONIA

Inventor name: VERNA, ERIC

Inventor name: COSTE, FREDERIC

Inventor name: FABBRO, REMY

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20110630

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180501