Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
  • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
  • F01D5/12—Blades
  • F01D5/14—Form or construction
  • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
• • 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
• • 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
  • B23K9/00—Arc welding or cutting
  • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P6/00—Restoring or reconditioning objects
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P6/00—Restoring or reconditioning objects
  • B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
  • B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
  • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
  • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
  • F01D5/12—Blades
  • F01D5/14—Form or construction
• • 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
  • B23K2101/00—Articles made by soldering, welding or cutting
  • B23K2101/001—Turbines
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
  • F05D2230/00—Manufacture
  • F05D2230/20—Manufacture essentially without removing material
  • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
  • F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
  • F05D2230/00—Manufacture
  • F05D2230/20—Manufacture essentially without removing material
  • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
  • F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
  • F05D2230/234—Laser welding
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
  • F05D2230/00—Manufacture
  • F05D2230/30—Manufacture with deposition of material
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
  • F05D2230/00—Manufacture
  • F05D2230/80—Repairing, retrofitting or upgrading methods

Definitions

• the invention relates to a construction strategy in order ⁇ a weld crown bottom of a turbine blade and the turbine blade thus prepared with a squealer on the crown ground.
• the tips of a turbine blade underlie ⁇ gene stronger wear and are repaired for reuse, which again material must be applied to the original geometry, the so-called squealer edge, a circumferential wall along the outer contour of the
• Airfoil applied and should also be inexpensive to manufacture.
• the corresponding traverse strategy of the welding head also plays a role.
• Figure 1 is a plan is applied to a surface of a turbine acting ⁇ fel, on the material
• FIG. 3 shows a procedure of the building strategy
• Figure 4 shows a turbine blade
• Figure 5 is a list of superalloys.
• FIG. 1 shows a plan view of a surface 4, in particular a blade tip 415 (FIG. 4) of a turbine blade 120, 130, or in general as a component 1.
• the surface 4, 415 is preferably flat.
• the airfoil of the turbine blade 120, 130 has an outer contour 7.
• an outer circumferential weld 10 is placed along the contour 7, before the first step
• Welding webs are applied for welding layers.
• circumferential wall 13 hardfaced is set preferential ⁇ well as an inner circumferential weld 11 along a path to be generated inner contour 8, before the first welding lines between the contours 7 and 8 are plotted for welding positions.
• Figure 2 is a cross section of a desired geometry of a crown bottom 4 with a circumferential wall 13, in particular a tip squealer of a turbine blade, and shown a hollow space ⁇ . 6
• the wall 13 is at least two welding track widths wide. In the middle of the surface 4, 415, an upwardly open cavity 6 with the inner surface 5 forms.
• FIG. 3 shows first steps for the large-area construction of material, in particular for a circumferential wall 13.
• the welding tracks 26 (26 ', 26'', ..., 29 (29', 29 '', ...) are laid parallel to a longitudinal line 20.
• the longitudinal line 20 is preferably aligned to the longitudinal direction of the fl at surface 4, 415.
• the longitudinal line 20 can extend through an end 40 of the surface 4, 415 and represents the almost longest, straight course on the surface 4, 415.
• the weld beads 26, 29 preferably start at one end, in particular 26 ⁇ of the surface 4, 415 and run in a straight line. If the welding path leaves the outer contour 7, the application process is moved to the next welding path displaced by a certain distance.
• the surface 4, 415 which is to be coated with material, is produced completely with parallel running welding paths 26, 29.
• the welding tracks are laid, preferably continuously from one side, here 26 'to the other side, here 29'.
• a second welding layer of welding paths is generated which is parallel to a transverse line 23
• the transverse line 23 extends transversely to the longitudinal line 20, in particular at an angle 70 ° to 110 °, in particular 80 ° to 110 ° to a longitudinal line 20 extends.
• the transverse line 23 is perpendicular to the longitudinal ⁇ line 20.
• the second welding layer covers the first welding position.
• the lines 33 33 ⁇ ⁇ , ... represent only the relative movement between the blade tip and the welding head, ie when the inner surface 5 is generated, no material is applied there by stopping the supply of material in the region.
• the second welding location preferably starting at one end 40 of the face 4, 415 and then by following directly aneinan ⁇ the adjacent or preferably overlapping sheeting coated.
• the welding tracks 33 (33 ', 33 ",...) are laid parallel to a transverse line 23.
• the transverse line 23 is preferably aligned transversely to the longitudinal direction 20 of the surface 4, 415.
• the weld beads 33 ', 33 "preferably start at one end, e.g. B. 40 of the surface 4, 415 and run straight. If the welding path leaves the outer contour 7, the application process is moved to the next welding path displaced by a certain distance. In the areas in which the cavity 6 is formed, no material is applied, so that the transverse line 23 or Paralle ⁇ len to only the course of the relative movement between the substrate 120 and welding head (not shown) represent. In the first welding position, the surface 4, 415, with
• Material is to be coated, completely generated with parallel ver ⁇ running welding paths 33.
• the welding paths are laid, preferably continuously from one side, here 40, 412 to the other side, here 409 (FIG. 4).
• a second welding layer of welding paths is produced, which are laid parallel to a longitudinal line 20 (26, 29), wherein the longitudinal line 20 transverse to the transverse line 23, in particular at an angle 70 ° to 110 °, in particular 80 ° extends to 110 ° to the transverse line 23.
• the longitudinal centerline 20 extends perpendicular to the transverse line ⁇ 23rd
• the second welding layer covers the first welding position.
• the lines 26, 29, ... represent only the relative movement between the blade tip and the welding head, ie when the inner surface 5 is created, no material is applied there by stopping the supply of material in the region.
• the second welding location preferably starting at one side of the face 4, 415 and then by following directly aneinan ⁇ the adjacent or preferably overlapping sheeting coated.
• the desired height of the wall 13 is achieved by repeating the procedure according to FIG. 3 until the desired height of the wall 13 is reached.
• the turbine blade 120, 130 has a nickel- or cobalt-based superalloy, in particular an alloy according to FIG.
• the welding material also represents a nickel- or cobalt-based alloy and differs preferential example of the material of the component 1, 120, 130.
• distinc ⁇ dung means that at least one alloying element has a higher or 10% lower proportion of this alloying element.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• General Engineering & Computer Science (AREA)
• Plasma & Fusion (AREA)
• Architecture (AREA)
• Laser Beam Processing (AREA)
• Turbine Rotor Nozzle Sealing (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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• 2014
  • 2014-10-09 DE DE102014220483.6A patent/DE102014220483A1/de not_active Withdrawn
• 2015
  • 2015-10-01 US US15/514,439 patent/US10458250B2/en not_active Expired - Fee Related
  • 2015-10-01 KR KR1020177011847A patent/KR20170061707A/ko active Search and Examination
  • 2015-10-01 CN CN201580055004.2A patent/CN106794550A/zh active Pending
  • 2015-10-01 WO PCT/EP2015/072697 patent/WO2016055350A1/de active Application Filing
  • 2015-10-01 EP EP15774906.0A patent/EP3180155A1/de not_active Withdrawn
  • 2015-10-01 RU RU2017114023A patent/RU2677028C2/ru not_active IP Right Cessation

Non-Patent Citations (2)

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