US20190091800A1 - Oscillating welding method - Google Patents

Oscillating welding method Download PDF

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Publication number
US20190091800A1
US20190091800A1 US16/196,524 US201816196524A US2019091800A1 US 20190091800 A1 US20190091800 A1 US 20190091800A1 US 201816196524 A US201816196524 A US 201816196524A US 2019091800 A1 US2019091800 A1 US 2019091800A1
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United States
Prior art keywords
material feed
respect
energy source
substrate
oscillating motion
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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.)
Abandoned
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US16/196,524
Inventor
Berd Burbaum
Torsten Jokisch
Michael Ott
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Siemens AG
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Siemens AG
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Priority to US16/196,524 priority Critical patent/US20190091800A1/en
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OTT, MICHAEL, BERBAUM, BERND, JOKISCH, Torsten
Publication of US20190091800A1 publication Critical patent/US20190091800A1/en
Abandoned legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14Working 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
    • B23K26/1435Working 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
    • B23K26/1438Working 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 directional control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00Welding or cutting by means of a plasma
    • B23K10/02Plasma welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/002Devices involving relative movement between electronbeam and workpiece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06Shaping the laser beam, e.g. by masks or multi-focusing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
    • B23K26/082Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14Working 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14Working 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
    • B23K26/144Working 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 fluid stream containing particles, e.g. powder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34Laser welding for purposes other than joining
    • B23K26/342Build-up welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0244Powders, particles or spheres; Preforms made therefrom
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00Stators
    • F01D9/02Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/001Turbines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/08Non-ferrous metals or alloys
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/005Repairing methods or devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00Application
    • F05D2220/30Application in turbines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/20Manufacture essentially without removing material
    • F05D2230/23Manufacture essentially without removing material by permanently joining parts together
    • F05D2230/232Manufacture essentially without removing material by permanently joining parts together by welding
    • F05D2230/233Electron beam welding
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/30Manufacture with deposition of material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/30Manufacture with deposition of material
    • F05D2230/31Layer deposition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/10Metals, alloys or intermetallic compounds
    • F05D2300/17Alloys
    • F05D2300/175Superalloys

Definitions

  • the following relates to a welding method in which the welding beam is moved in oscillation.
  • An aspect relates to a welding method which makes it possible to achieve small grains and high deposition rates.
  • An oscillating motion in the horizontal direction should cause the solidification front to change constantly so as to produce an oscillating solidification form.
  • the grain growth is interrupted during the solidification of the melt and the microstructure solidifies in fine-grained form.
  • the fine-grained quality of the microstructure causes the welding residual stresses which thus remain to be distributed over the grain boundaries so as to avoid cracks in the weld seam or in the weld metal.
  • the welding method can be remelting or deposition welding. Both methods produce a melt and a solidification front.
  • FIG. 1 shows an arrangement for welding
  • FIGS. 2-4 show the sequence of the oscillating motion.
  • FIG. 1 shows a device 1 for a welding method, in particular a laser welding method, on the basis of which embodiments of the invention will be explained in a non-limiting manner.
  • the method is thus not limited to laser welding methods, but is also applicable for electron beam welding methods and other plasma welding methods with corresponding energy sources.
  • Material 8 is deposited onto a substrate 3 , which, in the case of turbine blades or vanes, is a nickel-based or cobalt-based superalloy having a high ⁇ ′ proportion and therefore generally an alloy having poor weldability.
  • a welding bead 6 as part of the deposition weld, has already been generated.
  • the welding bead is the remelted region.
  • a laser as an exemplary energy source 13 , directs the laser beams 15 ( FIG. 2 ) thereof onto the substrate 3 , there is a melt pool 7 .
  • a powder nozzle as the material feed 14 , preferably feeds powder 8 , with the powder 8 being melted, in this case by laser radiation 15 .
  • the material 8 is fed in the form of powder, but may also be fed as a wire. This laser radiation 15 is in particular pulsed.
  • the area to be welded is made up of a plurality of welding beads lying next to one another and if appropriate one above another and preferably has, in at least one direction, a length of greater than or equal to 4 mm.
  • FIGS. 2, 3 and 4 show the for example triangular 44 ; 31 , 34 ; 43 , 49 , 55 oscillating motion of the laser radiation 15 .
  • the oscillating motion is preferably affected only in one plane.
  • the triangular shape 44 ; 31 , 34 ; 43 , 49 , 55 is preferably an acute-angled triangle, with a height (in the direction of movement 2 ) of the triangular shape 44 preferably being at least twice the magnitude of the base 24 .
  • An oscillating motion preferably proceeds as follows:
  • the laser radiation 15 moves counter to the direction of movement 2 at an angle with respect to the direction of movement 2 as far as a first deflection point 22 , where the laser radiation 15 is then moved perpendicularly with respect to the direction of movement 2 in a direction 24 as far as a second deflection point 23 .
  • the laser radiation 15 In order that the laser radiation 15 continues to move along as a whole in the direction of movement 2 , it then moves obliquely with respect to the direction of movement 2 in the direction of movement 2 in a first oblique direction 30 ( FIG. 3 ) to a second starting point 31 , which lies downstream of the first deflection point 22 in the direction of movement 2 .
  • the second starting point 31 is level with the first deflection point 22 , displaced by a distance 4 .
  • the laser radiation 15 then moves forward again as far as a third deflection point 33 .
  • the third deflection point 33 lies downstream of the first starting point 21 in the direction of movement 2 .
  • a connecting line between points 21 , 33 is parallel to the direction of movement 2 .
  • the laser radiation 15 oscillates again at an angle with respect to the direction of movement 2 counter to the direction of movement 2 as far as a fourth deflection point 34 .
  • the fourth deflection point 34 is level with the second starting point 31 in a perpendicular direction with respect to the direction of movement 2 and level with the second deflection point 23 in the direction of movement 2 .
  • FIG. 4 The further triangular oscillating motion proceeding from FIG. 3 can then be identified in FIG. 4 , in which the laser radiation 15 oscillates in a second oblique direction 40 with respect to the direction of movement 2 in the direction of movement 2 to the seventh deflection point 55 .
  • the seventh deflection point 55 is level with the point 34 .
  • the laser radiation 15 then moves in the direction of the third deflection point 33 to a fifth deflection point 43 , which lies downstream of the deflection point 33 as shown in FIG. 3 .
  • the laser radiation 15 moves obliquely with respect to the direction of movement 2 counter to the direction of movement 2 in a third rearward motion 46 as far as a sixth deflection point 49 . From the sixth deflection point 49 , the laser radiation 15 oscillates perpendicularly with respect to the direction of movement 2 to the seventh deflection point 55 .
  • a triangular shape is always displaced in the direction of movement 2 for the course of the laser radiation 15 , such that the triangular shapes overlap.
  • this procedure achieves improved material properties.

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

Abstract

A method is provided for welding a substrate, in which an energy source and/or a material feed is or are moved in an oscillating motion over the surface of the substrate. The oscillating movement in a vertical and/or horizontal direction during welding results in smaller grains, which prevent the formation of fractures during welding.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is a continuation application of U.S. application Ser. No. 15/110,773, filed Jul. 11, 2016, and entitled “OSCILLATING WELDING METHOD”, which claims priority to PCT Application No. PCT/EP2014/053389, having a filing date of Feb. 21, 2014, based off of DE Application No. 102014200834.4 having a filing date of Jan. 17, 2014, the entire contents of which are hereby incorporated by reference.
  • FIELD OF TECHNOLOGY
  • The following relates to a welding method in which the welding beam is moved in oscillation.
  • BACKGROUND
  • During the laser deposition welding of nickel-based superalloys having a high proportion of metallic phase γ′, hot cracks can already form during solidification of the melt. By reducing the beam diameter of the laser with a circular intensity distribution, smaller grains are achieved and solidification cracks can be avoided, but this reduces the rate of deposition of the material.
  • SUMMARY
  • An aspect relates to a welding method which makes it possible to achieve small grains and high deposition rates.
  • An oscillating motion in the horizontal direction should cause the solidification front to change constantly so as to produce an oscillating solidification form. As a result of a constantly changing solidification function, the grain growth is interrupted during the solidification of the melt and the microstructure solidifies in fine-grained form. The fine-grained quality of the microstructure causes the welding residual stresses which thus remain to be distributed over the grain boundaries so as to avoid cracks in the weld seam or in the weld metal.
  • The welding method can be remelting or deposition welding. Both methods produce a melt and a solidification front.
  • BRIEF DESCRIPTION
  • Some of the embodiments will be described in detail, with reference to the following figures, wherein like designations denote like members, wherein:
  • FIG. 1 shows an arrangement for welding; and
  • FIGS. 2-4 show the sequence of the oscillating motion.
  • DETAILED DESCRIPTION
  • The figures and the description represent only exemplary embodiments of the invention.
  • FIG. 1 shows a device 1 for a welding method, in particular a laser welding method, on the basis of which embodiments of the invention will be explained in a non-limiting manner.
  • The method is thus not limited to laser welding methods, but is also applicable for electron beam welding methods and other plasma welding methods with corresponding energy sources.
  • Material 8 is deposited onto a substrate 3, which, in the case of turbine blades or vanes, is a nickel-based or cobalt-based superalloy having a high γ′ proportion and therefore generally an alloy having poor weldability.
  • A welding bead 6, as part of the deposition weld, has already been generated.
  • In the case of a remelt method, the welding bead is the remelted region.
  • At those points where a laser, as an exemplary energy source 13, directs the laser beams 15 (FIG. 2) thereof onto the substrate 3, there is a melt pool 7.
  • A powder nozzle, as the material feed 14, preferably feeds powder 8, with the powder 8 being melted, in this case by laser radiation 15. The material 8 is fed in the form of powder, but may also be fed as a wire. This laser radiation 15 is in particular pulsed.
  • The area to be welded is made up of a plurality of welding beads lying next to one another and if appropriate one above another and preferably has, in at least one direction, a length of greater than or equal to 4 mm.
  • FIGS. 2, 3 and 4 show the for example triangular 44; 31, 34; 43, 49, 55 oscillating motion of the laser radiation 15.
  • The oscillating motion is preferably affected only in one plane.
  • The triangular shape 44; 31, 34; 43, 49, 55 is preferably an acute-angled triangle, with a height (in the direction of movement 2) of the triangular shape 44 preferably being at least twice the magnitude of the base 24.
  • An oscillating motion preferably proceeds as follows:
  • From a first starting point 21 (FIG. 2), the laser radiation 15 moves counter to the direction of movement 2 at an angle with respect to the direction of movement 2 as far as a first deflection point 22, where the laser radiation 15 is then moved perpendicularly with respect to the direction of movement 2 in a direction 24 as far as a second deflection point 23.
  • In order that the laser radiation 15 continues to move along as a whole in the direction of movement 2, it then moves obliquely with respect to the direction of movement 2 in the direction of movement 2 in a first oblique direction 30 (FIG. 3) to a second starting point 31, which lies downstream of the first deflection point 22 in the direction of movement 2. The second starting point 31 is level with the first deflection point 22, displaced by a distance 4.
  • From there, the laser radiation 15 then moves forward again as far as a third deflection point 33. The third deflection point 33 lies downstream of the first starting point 21 in the direction of movement 2. A connecting line between points 21, 33 is parallel to the direction of movement 2. From there, the laser radiation 15 oscillates again at an angle with respect to the direction of movement 2 counter to the direction of movement 2 as far as a fourth deflection point 34.
  • The fourth deflection point 34 is level with the second starting point 31 in a perpendicular direction with respect to the direction of movement 2 and level with the second deflection point 23 in the direction of movement 2.
  • In a second perpendicular direction of movement 36 which is perpendicular with respect to the direction of movement 2, the laser radiation 15 moves back to the second starting point 31 of the triangular oscillating motion (FIG. 3).
  • The further triangular oscillating motion proceeding from FIG. 3 can then be identified in FIG. 4, in which the laser radiation 15 oscillates in a second oblique direction 40 with respect to the direction of movement 2 in the direction of movement 2 to the seventh deflection point 55. The seventh deflection point 55 is level with the point 34. From there, the laser radiation 15 then moves in the direction of the third deflection point 33 to a fifth deflection point 43, which lies downstream of the deflection point 33 as shown in FIG. 3.
  • From the fifth deflection point 43, the laser radiation 15 moves obliquely with respect to the direction of movement 2 counter to the direction of movement 2 in a third rearward motion 46 as far as a sixth deflection point 49. From the sixth deflection point 49, the laser radiation 15 oscillates perpendicularly with respect to the direction of movement 2 to the seventh deflection point 55.
  • Effectively, a triangular shape is always displaced in the direction of movement 2 for the course of the laser radiation 15, such that the triangular shapes overlap.
  • This represents only one procedure for the preferably triangular oscillation.
  • On account of embodiments of the invention, this procedure achieves improved material properties.
  • Although the present embodiments of has been disclosed in the form of preferred embodiments and variations thereon, it will be understood that numerous additional modifications and variations could be made thereto without departing from the scope of the invention.
  • For the sake of clarity, it is to be understood that the use of ‘a’ or ‘an’ throughout this application does not exclude a plurality, and ‘comprising’ does not exclude other steps or elements.

Claims (14)

1. A method for welding a substrate, comprising the following step:
providing an energy source and a material feed;
moving at least one of the energy source and the material feed horizontally in an oscillating motion with respect to a surface of the substrate, wherein the oscillating motion is done in one of a perpendicular and oblique direction with respect to a direction of motion of at least one of the energy source and the material feed such that a weld will overlap a previous weld and such that grain growth is interrupted during the solidification of the melt; and
emitting energy and material with respect to the surface of a substrate, during the oscillating, thereby producing the weld on the surface of the substrate.
2. The method as claimed in claim 1, in which remelt welding takes place.
3. The method as claimed in claim 1, in which deposition welding takes place.
4. The method as claimed in claim 1, in which the energy source is moved in an oscillating motion at least once in a triangular shape with respect to the surface.
5. The method as claimed in claim 1, in which the energy source and the material feed are moved in an oscillating motion at least once at least partially in a triangular shape with respect to the surface.
6. The method as claimed in claim 1, in which the energy source and the material feed are moved in an oscillating motion at least once in a triangular shape with respect to the surface.
7. The method as claimed in claim 1, in which laser radiation is used as the energy source.
8. The method as claimed in claim 1, in which powder is fed via the material feed.
9. The method as claimed in claim 1, in which nickel-based or cobalt-based superalloys are used as the substrate.
10. The method as claimed in claim 1, in which use is made of a welding nozzle, which has the material feed wherein the material feed is a powder feed, and generation and supply of the energy wherein the energy is laser radiation.
11. The method as claimed in claim 1, in which the oscillating deflection is up to 2 mm.
12. The method as claimed in claim 1, in which the welded area is ≥4 mm in at least one orientation.
13. The method as claimed in claim 1, in which the energy source and/or material feed are moved repeatedly perpendicularly, with respect to the direction of movement.
14. The method as claimed in claim 1, in which the oscillating motion is effected only two-dimensionally.
US16/196,524 2014-01-17 2018-11-20 Oscillating welding method Abandoned US20190091800A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/196,524 US20190091800A1 (en) 2014-01-17 2018-11-20 Oscillating welding method

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102014200834.4 2014-01-17
DE102014200834.4A DE102014200834A1 (en) 2014-01-17 2014-01-17 Oscillating welding process
PCT/EP2014/053389 WO2015106833A1 (en) 2014-01-17 2014-02-21 Oscillating welding method
US201615110773A 2016-07-11 2016-07-11
US16/196,524 US20190091800A1 (en) 2014-01-17 2018-11-20 Oscillating welding method

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP2014/053389 Continuation WO2015106833A1 (en) 2014-01-17 2014-02-21 Oscillating welding method
US15/110,773 Continuation US10286490B2 (en) 2014-01-17 2014-02-21 Oscillating welding method

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US20190091800A1 true US20190091800A1 (en) 2019-03-28

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US15/110,773 Expired - Fee Related US10286490B2 (en) 2014-01-17 2014-02-21 Oscillating welding method
US16/196,524 Abandoned US20190091800A1 (en) 2014-01-17 2018-11-20 Oscillating welding method

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US (2) US10286490B2 (en)
EP (1) EP3066305A1 (en)
KR (1) KR101908827B1 (en)
CN (1) CN105917078A (en)
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WO2015106833A1 (en) 2015-07-23
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EP3066305A1 (en) 2016-09-14
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