EP4380749A1 - Stopfen zum löten, bauteil einer gasturbine und verfahren - Google Patents
Stopfen zum löten, bauteil einer gasturbine und verfahrenInfo
- Publication number
- EP4380749A1 EP4380749A1 EP22786298.4A EP22786298A EP4380749A1 EP 4380749 A1 EP4380749 A1 EP 4380749A1 EP 22786298 A EP22786298 A EP 22786298A EP 4380749 A1 EP4380749 A1 EP 4380749A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plug
- head
- elongate part
- wall
- hole
- 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.)
- Pending
Links
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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0018—Brazing of turbine parts
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering or brazing
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering or brazing
- B23K35/0227—Rods or wires
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
- B23K35/3033—Ni as the principal constituent
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
- B23K35/3046—Co as the principal constituent
-
- 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
-
- 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
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
-
- 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
-
- 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
- B23K2103/18—Dissimilar materials
- B23K2103/26—Alloys of Nickel and Cobalt and Chromium
-
- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- F05D2230/237—Brazing
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/17—Alloys
- F05D2300/175—Superalloys
Definitions
- the invention relates to a plug for components of gas turbines, which is soldered in, a component of a gas turbine and a method.
- Turbine components in the hot gas area of gas turbines are usually manufactured using vacuum investment casting.
- mold cores are often set in order to generate cavities for cooling concepts.
- Ceramic retaining pins are more process-stable, but leave punctures (through-holes) when used.
- This through hole must be closed for the finished cast component of a gas turbine.
- Such mold cores are used in turbine blades for gas turbines in a power class greater than 200 MW.
- Figure 1 shows a component with a through hole
- Figure 5 plugs in the wall after soldering.
- FIG. 1 shows a cast component 1 for a gas turbine with a through hole 7 .
- the component 1 has a wall 4 to a cavity 5 not shown in detail.
- the through hole 7 preferably has a cylindrical or symmetrical shape.
- the wall 4 has a substrate material, in particular a nickel-based or cobalt-based superalloy.
- FIG. 2 shows a top view or cross section of a first stopper 20 according to the invention.
- the plug 20 has an elongated portion 23 and a head 26 .
- the plug 20 consists of the elongate part 23 and the head 26 and is preferably formed in one piece.
- the plug 20 has a longitudinal axis 13 .
- the head 26 in particular adjoins or sits concentrically on the elongate part 23 .
- the elongate part 23 of the stopper 20 has a cross-section which becomes smaller perpendicularly to its longitudinal axis 13 towards the end face ( 18 ′), in particular the elongate part 23 is designed in the form of a truncated cone in the plane of the drawing.
- the elongate part 23 will be located completely in the through hole 7 during soldering (FIG. 4).
- the head 26 will remain outside of the through hole 7 during the soldering and in particular will bear against the outside of the wall 4 (FIG. 4).
- the plug 20 has a layer of solder in its edge area 18' of the elongated part 23 and in the edge area 18'' of the head 26, ie the solder layer forms the edge area 18', 18''.
- the outer edge regions 18', 18'' have a composition of 100% solder material or at least a higher proportion of solder material, in particular of at least 60% in absolute terms, in particular of at least 70% of solder material, i.e. the remainder forms a substrate material of the stopper 20
- the remaining portion of the elongate member 23 and head 26 comprises a mixture of this substrate material and preferably the same solder material.
- the stopper 20 therefore has outside of the edge regions 18 ', 18' '; 28', 28'' (FIG. 3) have a mixing ratio of solder material and substrate material of 40% by weight to 60% by weight to 0% by weight to 100% by weight, in particular 10% by weight to 90% by weight.
- the proportion of solder material in this “inner” area differs from the edge areas 18′, 18′; 28′, 28′′ (FIG. 3) by at least 20% relatively.
- the substrate material of the plug 20, 30 (Fig. 3) is preferably the same as or similar to that of the substrate material of the wall 4.
- the soldering material is preferably also a nickel-based or cobalt-based alloy, which has a melting temperature that is at least 10K, in particular at least 20K, lower than that of the substrate material (the wall 4 or the plug 20, 30).
- the thickness of the edge regions 18', 18'';28',28'' is selected in such a way that after soldering, which requires homogenization, there is a distribution of substrate material to solder material for the entire plug 20, 30 (FIG. 5).
- solder material in the edge areas 18', 18''; 28', 28'' and the solder material for the mixture of substrate material and solder material between the edge regions 18', 18'' is preferably the same.
- the geometry of the elongate part 23 is almost complementary to the geometry of the through hole 7 .
- FIG. 3 shows another variant of a stopper 30 according to the invention in cross section, in which, in contrast to FIG.
- the statements according to FIG. 2 apply except for the geometry of the head 36, i.e. the edge area 28'' does not represent a plate but a semi-hollow sphere.
- Figure 4 shows simplified the arrangement of the plugs 20, 30 in the component 1 with the through hole 7, shown here as an example for the plug 30, in which the elongated part 33 with the edge area 28 'is completely in the through hole 7 and fills it and the Head 36 rests on the outside of wall 4 .
- the plug 30, 20 was preferably pressed into the through hole 7 in the green state, ie as a powder compact with binder.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021211825.9A DE102021211825A1 (de) | 2021-10-20 | 2021-10-20 | Stopfen löten, Bauteil einer Gasturbine und Verfahren |
| PCT/EP2022/075069 WO2023066565A1 (de) | 2021-10-20 | 2022-09-09 | Stopfen zum löten, bauteil einer gasturbine und verfahren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4380749A1 true EP4380749A1 (de) | 2024-06-12 |
Family
ID=83688576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22786298.4A Pending EP4380749A1 (de) | 2021-10-20 | 2022-09-09 | Stopfen zum löten, bauteil einer gasturbine und verfahren |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12385416B2 (de) |
| EP (1) | EP4380749A1 (de) |
| CN (1) | CN118103168A (de) |
| DE (1) | DE102021211825A1 (de) |
| WO (1) | WO2023066565A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102942234B1 (ko) * | 2023-11-14 | 2026-03-19 | 두산에너빌리티 주식회사 | 브레이징 플러그 및 이를 이용한 가스터빈 부품 제조방법 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7077622B2 (en) * | 2002-10-30 | 2006-07-18 | Alstom Technology Ltd. | Emergency cooling system for a thermally loaded component |
| US20110076151A1 (en) * | 2009-09-30 | 2011-03-31 | General Electric Company | Method and system for focused energy brazing |
| US20180133850A1 (en) * | 2016-11-11 | 2018-05-17 | Airbus Operations Gmbh | Method for reconditioning of a damaged portion of a component and insert therefor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6883700B2 (en) * | 2002-09-26 | 2005-04-26 | Siemens Westinghouse Power Corporation | Turbine blade closure system |
| US8087565B2 (en) | 2008-09-08 | 2012-01-03 | General Electric Company | Process of filling openings in a component |
| US8568826B2 (en) * | 2011-10-21 | 2013-10-29 | General Electric Company | Method of brazing a component, a brazed power generation system component, and a braze |
| US20150047168A1 (en) | 2013-08-13 | 2015-02-19 | Allister William James | Repair chain for turbomachinery components using additive manufacturing technology |
| US20200384560A1 (en) | 2019-06-07 | 2020-12-10 | United Technologies Corporation | Braze-in-place plug repair method for throughwall defects on castings |
-
2021
- 2021-10-20 DE DE102021211825.9A patent/DE102021211825A1/de not_active Withdrawn
-
2022
- 2022-09-09 WO PCT/EP2022/075069 patent/WO2023066565A1/de not_active Ceased
- 2022-09-09 CN CN202280069886.8A patent/CN118103168A/zh active Pending
- 2022-09-09 EP EP22786298.4A patent/EP4380749A1/de active Pending
- 2022-09-09 US US18/700,800 patent/US12385416B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7077622B2 (en) * | 2002-10-30 | 2006-07-18 | Alstom Technology Ltd. | Emergency cooling system for a thermally loaded component |
| US20110076151A1 (en) * | 2009-09-30 | 2011-03-31 | General Electric Company | Method and system for focused energy brazing |
| US20180133850A1 (en) * | 2016-11-11 | 2018-05-17 | Airbus Operations Gmbh | Method for reconditioning of a damaged portion of a component and insert therefor |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2023066565A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20240410295A1 (en) | 2024-12-12 |
| US12385416B2 (en) | 2025-08-12 |
| DE102021211825A1 (de) | 2023-04-20 |
| CN118103168A (zh) | 2024-05-28 |
| WO2023066565A1 (de) | 2023-04-27 |
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