EP1940580A1 - Procede de soudage par faisceau laser avec controle de la formation du capillaire de vapeurs metalliques - Google Patents
Procede de soudage par faisceau laser avec controle de la formation du capillaire de vapeurs metalliquesInfo
- 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- Withdrawn
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.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
Claims
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 (fr) | 2008-07-09 |
Family
ID=36678516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06820314A Withdrawn EP1940580A1 (fr) | 2005-10-21 | 2006-10-19 | Procede de soudage par faisceau laser avec controle de la formation du capillaire de vapeurs metalliques |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090134132A1 (fr) |
EP (1) | EP1940580A1 (fr) |
JP (1) | JP2009512556A (fr) |
CN (1) | CN101291773B (fr) |
BR (1) | BRPI0617708A2 (fr) |
FR (1) | FR2892328B1 (fr) |
WO (1) | WO2007045798A1 (fr) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2227620B1 (fr) | 2007-12-12 | 2011-08-31 | Honeywell International Inc. | Buse variable pour turbocompresseur, comportant une aube distributrice positionnée par des éléments radiaux |
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 |
EP2496379B1 (fr) * | 2009-11-03 | 2017-01-04 | The Secretary, Department Of Atomic Energy, Govt. of India | Procédé de fabrication de cavités radiofréquence supraconductrices (scrf) à base de niobium comprenant des composants au niobium par soudage laser |
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 |
DE102012025627B4 (de) | 2012-09-21 | 2016-04-14 | Trumpf Laser Gmbh | Ringdüse für einen Laserbearbeitungskopf und Laserbearbeitungskopf damit |
DE102012217082B4 (de) | 2012-09-21 | 2016-06-16 | Trumpf Laser Gmbh | Laserbearbeitungskopf mit einer Ringdüse |
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 |
CN105531073B (zh) * | 2013-06-28 | 2018-08-28 | 通快激光与系统工程有限公司 | 用于机械加工、尤其用于机械焊接加工的方法,以及过程气体供应的调整装置用的控制装置 |
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 |
US10906130B2 (en) * | 2014-06-19 | 2021-02-02 | Magna International Inc. | Method and apparatus for laser assisted power washing |
US20160023303A1 (en) * | 2014-07-22 | 2016-01-28 | Siemens Energy, Inc. | Method for forming three-dimensional anchoring structures |
US11123818B2 (en) * | 2014-10-15 | 2021-09-21 | Autotech Engineering S.L. | Welding of steel blanks |
CN108406112B (zh) * | 2015-02-09 | 2021-07-27 | 通快激光英国有限公司 | 激光焊缝 |
JP6151436B2 (ja) * | 2015-02-25 | 2017-06-21 | 技術研究組合次世代3D積層造形技術総合開発機構 | 三次元積層造形用ノズル、光加工ヘッド及び三次元積層造形装置 |
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)
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 (fr) * | 1989-03-17 | 1990-10-04 | Kazansky Khimiko-Tekhnologichesky Institut Imeni S.M.Kirova | Ejecteur a jet de gaz |
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 |
US5183992A (en) * | 1991-08-29 | 1993-02-02 | General Motors Corporation | Laser welding method |
US5187346A (en) * | 1991-08-29 | 1993-02-16 | General Motors Corporation | Laser welding method |
CA2091512A1 (fr) * | 1992-03-13 | 1993-09-14 | Kohichi Haruta | Buse d'irradiation laser et laser utilisant cette buse |
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 |
-
2005
- 2005-10-21 FR FR0553197A patent/FR2892328B1/fr not_active Expired - Fee Related
-
2006
- 2006-10-19 WO PCT/FR2006/051058 patent/WO2007045798A1/fr active Application Filing
- 2006-10-19 JP JP2008536101A patent/JP2009512556A/ja active Pending
- 2006-10-19 EP EP06820314A patent/EP1940580A1/fr not_active Withdrawn
- 2006-10-19 US US12/090,933 patent/US20090134132A1/en not_active Abandoned
- 2006-10-19 BR BRPI0617708-5A patent/BRPI0617708A2/pt not_active Application Discontinuation
- 2006-10-19 CN CN2006800386655A patent/CN101291773B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007045798A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101291773A (zh) | 2008-10-22 |
JP2009512556A (ja) | 2009-03-26 |
FR2892328B1 (fr) | 2009-05-08 |
US20090134132A1 (en) | 2009-05-28 |
FR2892328A1 (fr) | 2007-04-27 |
WO2007045798A1 (fr) | 2007-04-26 |
CN101291773B (zh) | 2011-09-14 |
BRPI0617708A2 (pt) | 2011-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2007045798A1 (fr) | Procede de soudage par faisceau laser avec controle de la formation du capillaire de vapeurs metalliques | |
FR2908677A1 (fr) | Procede de soudage par faisceau laser a penetration amelioree | |
EP1600245B1 (fr) | Procédé de soudage laser ou hybride laser-arc avec formation d'un plasma côté envers | |
CA2735142C (fr) | Procede de soudage laser de type co2 avec buse a jet dynamique | |
EP1427564A1 (fr) | Procede de soudage hybride laser-arc avec ajustage des debits de gaz | |
FR2600568A1 (fr) | Ameliorations aux methodes de decoupe de pieces metalliques au laser | |
EP1215008A1 (fr) | Procédé et installation de coupage laser avec tête de découpe à double flux et double foyer | |
EP0592309A1 (fr) | Procédé de nitruration d'une pièce en alliage de titane et dispositif de projection d'azote et de gaz neutre | |
EP2802435B1 (fr) | Dispositif de soudage hybride mig-tig ou mag-tig | |
WO2015059384A1 (fr) | Buse laser a double flux gazeux | |
WO2003022511A1 (fr) | Procede d'amorcage de l'arc electrique en soudage hybride laser-arc | |
Chae et al. | The effect of shielding gas composition in CO2 laser—gas metal arc hybrid welding | |
EP2219817A2 (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 | |
FR2982185A1 (fr) | Procede et installation de coupage laser avec jet de gaz incline |
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 |