DE102014210119A1 - Optic for welding with oscillating solidification front and welding process - Google Patents
Optic for welding with oscillating solidification front and welding process Download PDFInfo
- Publication number
- DE102014210119A1 DE102014210119A1 DE102014210119.0A DE102014210119A DE102014210119A1 DE 102014210119 A1 DE102014210119 A1 DE 102014210119A1 DE 102014210119 A DE102014210119 A DE 102014210119A DE 102014210119 A1 DE102014210119 A1 DE 102014210119A1
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- DE
- Germany
- Prior art keywords
- welding
- oscillating
- optic
- laser
- solidification front
- 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.)
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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
- B23K26/34—Laser welding for purposes other than joining
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
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- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
Abstract
Durch eine Optik (1), die zumindest ein kippbares und horizontal verschiebbares Linsenpaket (7, 10) aufweist, kann in einfacher Art und Weise eine oszillierende Erstarrungsfront beim Schweißen erzielt werden.By means of an optical system (1) which has at least one tiltable and horizontally displaceable lens package (7, 10), an oscillating solidification front during welding can be achieved in a simple manner.
Description
Die Erfindung betrifft eine Optik, die beim Schweißen verwendet wird, um eine oszillierende Erstarrungsfront zu erzeugen. The invention relates to optics used in welding to produce an oscillating solidification front.
Die Erfindungsmeldung betrifft das Schweißen, insbesondere Laserstrahl-Auftragschweißen mit pulverförmigem Zusatzwerkstoff unter Verwendung einer Pendelbewegung (Wobbel-Strategie). Durch eine Wobbel-Strategie beim Laserstrahl-Auftragsschweißen kann eine Keimbildung und Kornwachstum in der Mushy Zone (breiige Zone) gezielt erzeugt werden, so dass das Wachstum einer kolumnaren Erstarrungsfront unterdrückt bzw. vollständig vermieden. The invention relates to welding, in particular laser cladding with powdered filler material using a pendulum motion (wobble strategy). Through a sweep strategy in laser deposition welding, nucleation and grain growth in the Mushy Zone (pulpy zone) can be selectively generated so that the growth of a columnar solidification front is suppressed or completely avoided.
Bei der derzeitig eingesetzten kommerziell verfügbaren Anlagentechnik können nur begrenzte Strategien für die Pendelbewegung beim Auftragsschweißen eingesetzt werden. Aufgrund der benötigten großen Beschleunigungskräfte sind daher Pendelfrequenzen von bis zu 50Hz nicht zu erzielen. In the currently used commercially available systems engineering only limited strategies for the pendulum motion in the build-up welding can be used. Due to the large acceleration forces required, pendulum frequencies of up to 50Hz can not be achieved.
Es ist daher Aufgabe der Erfindung eine Optik und ein Verfahren aufzuzeigen, das die oben genannten Nachteile überwindet. It is therefore an object of the invention to provide an optical system and a method which overcomes the disadvantages mentioned above.
Die Aufgabe wird gelöst durch ein Optik gemäß Anspruch 1 und ein Verfahren gemäß Anspruch 6. The object is achieved by an optical system according to claim 1 and a method according to claim 6.
In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen. In the dependent claims further advantageous measures are listed, which can be combined with each other in order to achieve further advantages.
Es zeigen: Show it:
Zur Erfindung vorgeschlagen wird die Auslegung einer Schweißoptik mit oszillierender Erstarrungsfront. The invention proposes the design of a welding optics with oscillating solidification front.
Dabei werden insbesondere zwei Linsenpakete (Kollimation /Fokussierung) aktiv ansteuerbar in die Optik eingebaut, die sowohl kippbar als auch horizontal verschiebbar sind. Dadurch kann die insbesondere verwendete Laserstrahlung aktiv durch den Pulverfokus der koaxialen Düsentechnologie gedreht werden. In particular, two lens packages (collimation / focusing) are actively controllably incorporated into the optics, which are both tiltable and horizontally displaceable. As a result, the laser radiation used in particular can be actively rotated by the powder focus of the coaxial nozzle technology.
Die erzielbare Pendelweite für das Laserstrahl-Auftragsschweißen mit oszillierender Erstarrungsfront beträgt dabei vorzugsweise etwa 1,5mm–2,0mm. The achievable pendulum distance for the laser beam buildup welding with oscillating solidification front is preferably about 1.5mm-2.0mm.
Durch diese Anlagentechnik lassen sich somit gezielt die für die Oszillation notwendigen Verfahrensparameter wie Pendelfrequenz der Laserstrahlung im Schmelzbad beeinflussen. By means of this system technology, the process parameters necessary for the oscillation, such as the oscillation frequency of the laser radiation in the molten bath, can thus be purposefully influenced.
Der Vorteil liegt in der Eingrenzung des Parameterfeldes und in verbesserten Materialeigenschaften des Bauteils im Vergleich zu konventionell geschweißten Bauteilen sowie Einsparung von Material und Verkleinerung der Ausschusszahlen. The advantage lies in the limitation of the parameter field and in improved material properties of the component in comparison to conventionally welded components as well as saving of material and reduction of scrap rates.
Die Figuren und die Beschreibung stellen nur Ausführungsbeispiele der Erfindung dar. The figures and the description represent only embodiments of the invention.
Dies sind vorzugsweise eine Kollimationslinie
Am Ende der Optik
Dies kann ein Laserstrahl
Beim Laserstrahl können optische Linsen verwendet werden, wohingegen beim Elektronenstrahl entsprechende elektromagnetische Manipulatoren verwendet werden, die aus dem Stand der Technik bekannt sind. In the laser beam, optical lenses may be used, whereas the electron beam uses corresponding electromagnetic manipulators known in the art.
Die Erfindung ist also nicht beschränkt auf Laser- oder Elektronenstrahlen. The invention is therefore not limited to laser or electron beams.
Ebenso kann die Vorrichtung
Die Düse
Bei Pulvern erfolgt die Pulverführung vorzugsweise koaxial. For powders, the powder guide is preferably coaxial.
Mit der Optik
Das zumindest eine Linsenpaket
Die Bewegungen der Linsenpakte
In den
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014210119.0A DE102014210119A1 (en) | 2014-05-27 | 2014-05-27 | Optic for welding with oscillating solidification front and welding process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014210119.0A DE102014210119A1 (en) | 2014-05-27 | 2014-05-27 | Optic for welding with oscillating solidification front and welding process |
Publications (1)
Publication Number | Publication Date |
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DE102014210119A1 true DE102014210119A1 (en) | 2015-12-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102014210119.0A Withdrawn DE102014210119A1 (en) | 2014-05-27 | 2014-05-27 | Optic for welding with oscillating solidification front and welding process |
Country Status (1)
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DE (1) | DE102014210119A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017201261A1 (en) | 2017-01-26 | 2018-07-26 | Siemens Aktiengesellschaft | Magnetic impact surfacer and surfacing method |
CN109048051A (en) * | 2018-08-27 | 2018-12-21 | 江苏大学 | A kind of three-dimensional adjustable laser beam expands focusing device |
CN111565881A (en) * | 2018-03-23 | 2020-08-21 | 普锐特冶金技术日本有限公司 | Laser processing head, laser processing device, and method for adjusting laser processing head |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03285785A (en) * | 1990-03-30 | 1991-12-16 | Ishikawajima Harima Heavy Ind Co Ltd | Laser beam oscillating device |
EP0529856A2 (en) * | 1991-08-23 | 1993-03-03 | Toyota Jidosha Kabushiki Kaisha | Method of laser-welding metal sheets having different thicknesses |
DE19604205A1 (en) * | 1996-02-06 | 1997-08-07 | Michels Gmbh Sondermaschinenba | Laser radiation joining method |
JP2003220489A (en) * | 2002-01-23 | 2003-08-05 | Fine Device:Kk | Device and method for laser beam machining |
-
2014
- 2014-05-27 DE DE102014210119.0A patent/DE102014210119A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03285785A (en) * | 1990-03-30 | 1991-12-16 | Ishikawajima Harima Heavy Ind Co Ltd | Laser beam oscillating device |
EP0529856A2 (en) * | 1991-08-23 | 1993-03-03 | Toyota Jidosha Kabushiki Kaisha | Method of laser-welding metal sheets having different thicknesses |
DE19604205A1 (en) * | 1996-02-06 | 1997-08-07 | Michels Gmbh Sondermaschinenba | Laser radiation joining method |
JP2003220489A (en) * | 2002-01-23 | 2003-08-05 | Fine Device:Kk | Device and method for laser beam machining |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017201261A1 (en) | 2017-01-26 | 2018-07-26 | Siemens Aktiengesellschaft | Magnetic impact surfacer and surfacing method |
CN111565881A (en) * | 2018-03-23 | 2020-08-21 | 普锐特冶金技术日本有限公司 | Laser processing head, laser processing device, and method for adjusting laser processing head |
EP3744468A4 (en) * | 2018-03-23 | 2021-04-07 | Primetals Technologies Japan, Ltd. | Laser machining head and laser machining apparatus, and laser machining head adjustment method |
CN111565881B (en) * | 2018-03-23 | 2022-06-14 | 普锐特冶金技术日本有限公司 | Laser processing head, laser processing device, and method for adjusting laser processing head |
US11597033B2 (en) | 2018-03-23 | 2023-03-07 | Primetals Technologies Japan, Ltd. | Laser processing head, laser processing device, and method for adjusting laser processing head |
CN109048051A (en) * | 2018-08-27 | 2018-12-21 | 江苏大学 | A kind of three-dimensional adjustable laser beam expands focusing device |
CN109048051B (en) * | 2018-08-27 | 2020-06-26 | 江苏大学 | Three-dimensional adjustable laser beam expanding and focusing device |
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R163 | Identified publications notified | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |