US20050246894A1 - Method for manufacturing a stator or rotor component - Google Patents
Method for manufacturing a stator or rotor component Download PDFInfo
- Publication number
- US20050246894A1 US20050246894A1 US10/906,324 US90632405A US2005246894A1 US 20050246894 A1 US20050246894 A1 US 20050246894A1 US 90632405 A US90632405 A US 90632405A US 2005246894 A1 US2005246894 A1 US 2005246894A1
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- United States
- Prior art keywords
- wall part
- recited
- component
- wall
- circumferential direction
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
-
- 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
- B23K26/035—Aligning the laser beam
- B23K26/037—Aligning the laser beam by pressing on the workpiece, e.g. pressing roller foot
-
- 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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
-
- 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
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
-
- 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
- F05D2230/10—Manufacture by removing material
- F05D2230/13—Manufacture by removing material using lasers
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
- Y10T29/49323—Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles
Definitions
- the present invention relates to a method for manufacturing a stator or rotor component which is intended during operation to conduct a gas flow.
- the stator or rotor component can, for example, be used in a gas turbine and especially in a jet engine.
- Jet engine is meant to include various types of engines which admit air at relatively low velocity, heat it by combustion and shoot it out at a much higher velocity.
- Accommodated within the term jet engine are, for example, turbojet engines and turbo-fan engines.
- a stator component of this kind comprising an outer and an inner ring with wall parts arranged between the rings, can be arranged with a view to primarily being force-transmitting in the radial and axial direction.
- the wall parts can, for example, form hollow blades, which are usually shaped such that they offer as little air resistance as possible.
- the component can, for example, be arranged in a rear or front stand in a jet engine. The blades are often referred to in such a case as stays or “struts”. Struts can, however, also be formed by other types of parts than hollow blades.
- Wall parts in the form of hollow blades that are arranged at a distance apart in the circumferential direction of the component between an inner and an outer ring are known.
- the hollow blades are joined together with the rings by welding.
- Each of the rings is made in this case firstly with portions of the same cross-dimensional shape and size as the blades, protruding in the radial direction. Such protruding portions are often referred to as “stubs”.
- Each of the blades is then welded to a protruding portion of this kind by means of a butt joint.
- the radially protruding portions are usually mill-cut from a ring. This is a time-consuming and costly operation.
- One object of the invention is to achieve a method for manufacturing a stator or rotor component which creates preconditions for a manufacture which is simplified and hence time-effective and cost-effective in relation to the prior art. Further, a high-strength component with long working life will be produced with the method.
- a first wall part is placed with its one edge bearing against the flat side of a second wall part, extending in the intended radial direction of the component, in such a way that the first wall part extends in the intended circumferential direction of the component, and that the edge of the first wall part is then laser-welded to said second wall part from an, in the circumferential direction, opposite side of the second wall part in relation to the first wall part in such a way that the joined-together portions of the wall parts form a T-shaped joint.
- edge of the wall part is meant the elongated surface which delimits the side faces, or flat sides, of the wall part.
- the first wall part is placed with a second edge, which is opposite to the first-named edge, bearing against the flat side of a further second wall part, the latter of which is arranged at a distance in the circumferential direction from the first-named second wall part and is connected thereto.
- the two wall parts which are spaced apart in the circumferential direction are constituted by two different blades or stays for guidance of a gas flow and/or transmission of load.
- the first wall part thus serves to limit a gas duct in the radial direction between the two blades or stays.
- the two second wall parts are formed by a single, substantially U-shaped element.
- the two wall parts are in this way constituted by a portion of the particular leg of the “U”.
- FIG. 1 is a perspective view showing a basic diagram of the connection between two wall parts forming part of the stator or rotor component;
- FIG. 2 is an enlarged cross-sectional view of a weld joint in the component according to FIG. 1 ;
- FIG. 3 is a perspective view demonstrating a first preferred embodiment of the component in a cut projection
- FIG. 4 is a perspective view showing a schematic projection of the component according to FIG. 3 ;
- FIG. 5 shows is a perspective view showing a schematic projection of the component according to a second preferred embodiment.
- FIG. 1 shows a basic diagram of a connection of a first and second wall part 1 , 2 forming part of a stator component.
- the axial direction, radial direction and circumferential direction of the component are marked in the figure with the arrows A, B, and C, respectively.
- the second wall part 2 is arranged firstly so that it extends essentially in the intended radial and axial direction A, B of the component.
- the first wall part 1 is placed with its one edge 3 bearing against the flat side 4 of the second wall part in such a way that the first wall part extends essentially in the circumferential direction C of the component and in its axial direction A.
- the edge 3 of the first wall part 1 the surface connecting its side faces, or flat sides is meant.
- the edge 3 of the first wall part 1 is then laser-welded to the second wall part 2 from an, in the circumferential direction, opposite side of the second wall part 2 in relation to the first wall part 1 in such a way that the joined-together portions of the wall parts form a T-shaped joint 5 as shown in FIG. 2 .
- the laser-welding is illustrated with the arrow D in FIG. 1 .
- T-joint 5 it is meant, more precisely, that a portion of the second wall part 2 forms the top part of the T and a portion of the first wall part 1 forms the vertical part of the T, which connects to the top part.
- FIGS. 3 and 4 a first preferred embodiment is shown of the component.
- Each of a plurality of essentially U-shaped elements 6 , 17 , 23 are connected to an inner ring element 7 and are placed adjacent to one another in the circumferential direction of the component.
- the one side member of the U-shaped element 6 forms a second wall part 9 and its other side member forms a further second wall part 10 .
- the base of the U-shaped element 6 is connected to the inner ring element 7 by a rib 11 which extends in the intended axial direction of the component.
- the ends 12 , 13 of the two side members are later connected to an outer ring element 8 as shown in FIG. 4 .
- Each of the two second wall parts 9 , 10 thus extend essentially in the radial and axial direction of the component.
- the U-shaped element can be made, for example, by curving or bending a plate or a sheet into the desired shape.
- first wall parts 14 , 15 are placed such that they extend in the circumferential direction of the component and at various distances apart in the radial direction between the two second wall parts 9 , 10 . More precisely, the two first wall parts 14 , 15 are placed such that they bear with their end edges against the flat side of the second wall parts 9 , 10 . The end edges of the first wall parts 14 , 15 are then laser-welded to the second wall parts 9 , 10 from an, in the circumferential direction, opposite side of the second wall part 9 , 10 in relation to the first wall part 14 , 15 . The laser-welding is realized in such a way that the joined-together portions of the wall parts 9 , 10 , 14 , 15 form a T-shaped joint as depicted in FIG. 2 .
- the first wall part 15 which limits a gas duct 20 inwardly in the radial direction forms an intermediate portion of a plate-shaped member.
- This plate-shaped member has a shape corresponding to the space between the second, radial wall parts 9 , 10 between these as shown in FIG. 3 .
- the plate-shaped member has a U-shaped cross section and is constituted, for example, by a bent, or folded sheet.
- the side or plate portions 18 of the plate-shaped member have a shape and size corresponding to the space between the second wall parts 9 , 10 .
- the side portions of the plate-shaped member are also connected to the second wall parts 9 , 10 , expediently by laser-welding.
- the first wall part 14 which limits the gas duct 20 outwardly in the radial direction forms an intermediate portion of a further plate-shaped member.
- This plate-shaped member has a shape corresponding to the space between the second, radial wall parts 9 , 10 therebetween as in FIG. 3 .
- the plate-shaped member also has a U-shaped cross section and is constituted, for example, by a bent, or folded sheet, or by a tube or other profile.
- the side or plate portions 19 of the plate-shaped member have a shape and size corresponding to the space between the second wall parts 9 , 10 .
- the side portions of the plate-shaped member are connected to the second wall parts 9 , 10 , expediently by laser-welding.
- Each of the side members of the U-shaped element 6 are connected to a side member 16 of an, in the circumferential direction, adjoining U-shaped element 17 in such a way that gas cannot flow between the side members as shown in FIG. 4 .
- the mutually connected wall parts 9 , 16 together form means for guidance of a gas flow and/or transmission of load in the radial direction during operation of the component.
- the adjoining wall parts 9 , 16 are connected in FIG. 4 by a front and a rear cover wall 24 , which thus enclose a space between the wall parts.
- These cover walls 24 are aerodynamically configured and have, in this case, a pointed shape so as to offer as little flow resistance as possible.
- This connection can be produced, for example, by welding.
- the two connected side members together form a blade, vane, stay or strut for guidance of a gas flow and/or transmission of load.
- the two wall parts of the U-shaped element which are spaced apart in the circumferential direction form two different blades or stays for guidance of a gas flow and/or transmission of load.
- FIG. 4 is shown a schematic projection of a stator or rotor component 21 constructed according to the technique described above and illustrated in FIG. 3 .
- the component 21 has an essentially circular cross-sectional shape and the ducts 20 for conduction of the gas flow extend in the axial direction between the inner ring, formed by the ring elements 7 , and the outer ring 8 .
- FIG. 5 is illustrated a second embodiment of the stator component 23 .
- a basic difference relative to the first embodiment is that the two spaced apart second wall parts 109 , 110 do not form part of a U-shaped element but constitute separate units. All the wall parts 109 , 110 in the component are first connected to a continuous inner ring 107 . The first wall parts 114 , 115 are connected to the second wall parts 109 , 110 in the same manner as described above for the first embodiment. An outer ring 108 is then arranged around the wall parts 109 , 110 and connected thereto.
- the materials which are used for the first and second wall parts 1 , 2 , 9 , 10 , 14 , 15 , 109 , 110 , 114 are constituted by weldable materials, such as stainless steel, for example of the type 347 or A286.
- weldable materials such as stainless steel, for example of the type 347 or A286.
- nickel-based alloys such as, for example, INC0600, INC0625, INC0718 and Hastaloy x
- cobalt-based alloys for example, of the type HAYNES 188 and HAYNES 230 can be used.
- titanium alloys, such as Ti6-4, TI6-2-4-2 and various types of aluminum alloys can be used. Combinations of different materials are also possible.
- a Nd: YAG-laser is preferably used, but also other types of welding arrangements, for example a CO2-LASER, can be used according to the invention.
- a CO2-LASER a CO2-LASER
- the T-shape in respect of a particular joint and a relatively gently rounded shape 22 of the inner angle between the second wall part and the first wall part are obtained with the laser-welding as may be appreciated from FIG. 2 .
- the welding is expediently realized by means of a continuous weld.
- the rounded shape of the weld joints produces a high-strength construction, and hence long working life for the component. This type of joining-together creates preconditions for a complete melting of the weld joint and fine transitions between the parts.
- the wall part has the shape of a plate.
- plate-shape is meant that the wall parts have two parallel side faces at a relatively short distance apart.
- ring element used above in the description is meant a continuously annular member, a substantially annular member interrupted in the circumferential direction, or a part which, together with other like parts, is intended to form an annular member.
- ring is meant a circumferential, band-shaped, preferably circular part, which spreads like a plate in the axial direction.
- the mutually connected second wall parts form the shape of a blade, for example, having an airfoil shape in cross section.
- a blade shape is utilized when the component is used in specific stator applications.
- the first wall part is not limited to just rounded or curved cross-sectional shape, but rather, for example, a square cross-sectional shape, that is to say made up of essentially straight portions of different direction, are also included.
- the wall parts extend in a certain direction with respect to the component, it is meant that at least one component of the extent of the wall part lies in this direction.
- the wall part extends substantially in this direction.
- the wall part in question extends in a plane parallel with said direction.
- the stator component can, for example, form an inlet part, an intermediate housing, a turbine-exhaust housing, that is to say a concluding housing part, or a part of this for a gas turbine. Its primary function is in this case to act as a bearing fastening, for the transmission of loads, and to provide a duct for gases.
- a wall part is placed such that it extends in the intended radial direction of the component, it is meant both that the wall part is placed directly in a structure in the radial direction of the component and that the wall part is first mounted in a section and that a plurality of such sections are then mutually connected in the circumferential direction so that the wall part ends up in said radial direction.
- connection of a wall part extending in the radial direction to another wall part extending in the radial direction can further be effected differently than arranging a cover plate therebetween.
- the wall parts can be arranged relatively close together and connected by the application of material, by welding and the like.
- the cover plates can be fixed in a number of different of ways, such as riveting and gluing.
- each comprising a first and a second wall part, and which sections each in cross section form the sector of a circle.
- the sections are then connected in the intended circumferential direction of the component to form the stator or rotor component.
- the second wall part is arranged in the intended radial direction of the component and the first wall part in the intended circumferential direction of the component.
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- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- Laser Beam Processing (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Method for manufacturing a stator or rotor component which is intended during operation to conduct a gas flow. A first wall part (14, 15) is placed with its one edge bearing against the flat side of a second wall part (9, 10), extending in the radial direction of the component, in such a way that the first wall part extends in the circumferential direction of the component. The edge of the first wall part is then laser-welded to the second wall part from an, in the circumferential direction, opposite side of the second wall part in relation to the first wall part in such a way that the joined-together portions of the wall parts form a T-shaped joint.
Description
- The present application is a continuation patent application of International Application No. PCT/SE03/01145 filed 30 Jun. 2003 which was published in English pursuant to Article 21(2) of the Patent Cooperation Treaty. Said International Application claims priority to Swedish Application No. 0202422-2 filed 14 Aug. 2002 and U.S. Provisional Application No. 60/402,946 filed 14 Aug. 2002. Said applications are expressly incorporated herein by reference in their entireties.
- The present invention relates to a method for manufacturing a stator or rotor component which is intended during operation to conduct a gas flow. The stator or rotor component can, for example, be used in a gas turbine and especially in a jet engine.
- Jet engine is meant to include various types of engines which admit air at relatively low velocity, heat it by combustion and shoot it out at a much higher velocity. Accommodated within the term jet engine are, for example, turbojet engines and turbo-fan engines.
- The component is primarily intended for static applications, but rotary applications might also enter into consideration. A stator component of this kind, comprising an outer and an inner ring with wall parts arranged between the rings, can be arranged with a view to primarily being force-transmitting in the radial and axial direction. The wall parts can, for example, form hollow blades, which are usually shaped such that they offer as little air resistance as possible. The component can, for example, be arranged in a rear or front stand in a jet engine. The blades are often referred to in such a case as stays or “struts”. Struts can, however, also be formed by other types of parts than hollow blades.
- Wall parts in the form of hollow blades that are arranged at a distance apart in the circumferential direction of the component between an inner and an outer ring are known. The hollow blades are joined together with the rings by welding. Each of the rings is made in this case firstly with portions of the same cross-dimensional shape and size as the blades, protruding in the radial direction. Such protruding portions are often referred to as “stubs”. Each of the blades is then welded to a protruding portion of this kind by means of a butt joint. The radially protruding portions are usually mill-cut from a ring. This is a time-consuming and costly operation.
- One object of the invention is to achieve a method for manufacturing a stator or rotor component which creates preconditions for a manufacture which is simplified and hence time-effective and cost-effective in relation to the prior art. Further, a high-strength component with long working life will be produced with the method.
- This object is achieved by virtue of the fact that a first wall part is placed with its one edge bearing against the flat side of a second wall part, extending in the intended radial direction of the component, in such a way that the first wall part extends in the intended circumferential direction of the component, and that the edge of the first wall part is then laser-welded to said second wall part from an, in the circumferential direction, opposite side of the second wall part in relation to the first wall part in such a way that the joined-together portions of the wall parts form a T-shaped joint.
- By the edge of the wall part is meant the elongated surface which delimits the side faces, or flat sides, of the wall part. Given an appropriate choice of material parameters and welding parameters, a T-shaped joint with rounded corners, or at least a relatively smooth transition, can be obtained between the wall parts. This produces a structurally strong construction and hence an extended working life. Alternatively, a construction with thinner wall thicknesses and hence reduced weight can be obtained.
- According to a preferred embodiment of the invention, the first wall part is placed with a second edge, which is opposite to the first-named edge, bearing against the flat side of a further second wall part, the latter of which is arranged at a distance in the circumferential direction from the first-named second wall part and is connected thereto. Further, the two wall parts which are spaced apart in the circumferential direction are constituted by two different blades or stays for guidance of a gas flow and/or transmission of load. The first wall part thus serves to limit a gas duct in the radial direction between the two blades or stays.
- According to a refinement of the previous embodiment, the two second wall parts are formed by a single, substantially U-shaped element. The two wall parts are in this way constituted by a portion of the particular leg of the “U”.
- Further preferred embodiments of, and advantages with the invention can be ascertained from the following description.
- The invention will be described in greater detail below, with reference to the embodiments shown in the appended drawings, in which:
-
FIG. 1 is a perspective view showing a basic diagram of the connection between two wall parts forming part of the stator or rotor component; -
FIG. 2 is an enlarged cross-sectional view of a weld joint in the component according toFIG. 1 ; -
FIG. 3 is a perspective view demonstrating a first preferred embodiment of the component in a cut projection; -
FIG. 4 is a perspective view showing a schematic projection of the component according toFIG. 3 ; and -
FIG. 5 shows is a perspective view showing a schematic projection of the component according to a second preferred embodiment. -
FIG. 1 shows a basic diagram of a connection of a first andsecond wall part - The
second wall part 2 is arranged firstly so that it extends essentially in the intended radial and axial direction A, B of the component. Thefirst wall part 1 is placed with its oneedge 3 bearing against theflat side 4 of the second wall part in such a way that the first wall part extends essentially in the circumferential direction C of the component and in its axial direction A. By theedge 3 of thefirst wall part 1, the surface connecting its side faces, or flat sides is meant. - The
edge 3 of thefirst wall part 1 is then laser-welded to thesecond wall part 2 from an, in the circumferential direction, opposite side of thesecond wall part 2 in relation to thefirst wall part 1 in such a way that the joined-together portions of the wall parts form a T-shaped joint 5 as shown inFIG. 2 . The laser-welding is illustrated with the arrow D inFIG. 1 . - By T-
joint 5 it is meant, more precisely, that a portion of thesecond wall part 2 forms the top part of the T and a portion of thefirst wall part 1 forms the vertical part of the T, which connects to the top part. - In
FIGS. 3 and 4 , a first preferred embodiment is shown of the component. Each of a plurality of essentiallyU-shaped elements inner ring element 7 and are placed adjacent to one another in the circumferential direction of the component. The one side member of the U-shaped element 6 forms asecond wall part 9 and its other side member forms a furthersecond wall part 10. The base of the U-shaped element 6 is connected to theinner ring element 7 by arib 11 which extends in the intended axial direction of the component. Theends 12, 13 of the two side members are later connected to anouter ring element 8 as shown inFIG. 4 . Each of the twosecond wall parts - Further, two
first wall parts second wall parts first wall parts second wall parts first wall parts second wall parts second wall part first wall part wall parts FIG. 2 . - The
first wall part 15 which limits agas duct 20 inwardly in the radial direction forms an intermediate portion of a plate-shaped member. This plate-shaped member has a shape corresponding to the space between the second,radial wall parts FIG. 3 . The plate-shaped member has a U-shaped cross section and is constituted, for example, by a bent, or folded sheet. The side orplate portions 18 of the plate-shaped member have a shape and size corresponding to the space between thesecond wall parts second wall parts - The
first wall part 14 which limits thegas duct 20 outwardly in the radial direction forms an intermediate portion of a further plate-shaped member. This plate-shaped member has a shape corresponding to the space between the second,radial wall parts FIG. 3 . The plate-shaped member also has a U-shaped cross section and is constituted, for example, by a bent, or folded sheet, or by a tube or other profile. The side orplate portions 19 of the plate-shaped member have a shape and size corresponding to the space between thesecond wall parts second wall parts - Each of the side members of the U-shaped element 6 are connected to a
side member 16 of an, in the circumferential direction, adjoiningU-shaped element 17 in such a way that gas cannot flow between the side members as shown inFIG. 4 . The mutuallyconnected wall parts - The adjoining
wall parts FIG. 4 by a front and arear cover wall 24, which thus enclose a space between the wall parts. Thesecover walls 24 are aerodynamically configured and have, in this case, a pointed shape so as to offer as little flow resistance as possible. This connection can be produced, for example, by welding. The two connected side members together form a blade, vane, stay or strut for guidance of a gas flow and/or transmission of load. In other words, the two wall parts of the U-shaped element which are spaced apart in the circumferential direction form two different blades or stays for guidance of a gas flow and/or transmission of load. - In
FIG. 4 is shown a schematic projection of a stator orrotor component 21 constructed according to the technique described above and illustrated inFIG. 3 . Thecomponent 21 has an essentially circular cross-sectional shape and theducts 20 for conduction of the gas flow extend in the axial direction between the inner ring, formed by thering elements 7, and theouter ring 8. - In
FIG. 5 is illustrated a second embodiment of thestator component 23. A basic difference relative to the first embodiment is that the two spaced apartsecond wall parts wall parts inner ring 107. Thefirst wall parts second wall parts outer ring 108 is then arranged around thewall parts - The materials which are used for the first and
second wall parts - In the laser-welding, a Nd: YAG-laser is preferably used, but also other types of welding arrangements, for example a CO2-LASER, can be used according to the invention. By precise coordination of the welding method, materials choice and wall parts dimensions, the T-shape in respect of a particular joint and a relatively gently rounded
shape 22 of the inner angle between the second wall part and the first wall part are obtained with the laser-welding as may be appreciated fromFIG. 2 . The welding is expediently realized by means of a continuous weld. The rounded shape of the weld joints produces a high-strength construction, and hence long working life for the component. This type of joining-together creates preconditions for a complete melting of the weld joint and fine transitions between the parts. - In order for the weld joint to end up in exactly the right position, a previously known joint-following technique can be used.
- The wall part has the shape of a plate. By plate-shape is meant that the wall parts have two parallel side faces at a relatively short distance apart.
- By the term ring element used above in the description is meant a continuously annular member, a substantially annular member interrupted in the circumferential direction, or a part which, together with other like parts, is intended to form an annular member. When a plurality of such ring elements are joined together in the circumferential direction, a ring is formed. By ring is meant a circumferential, band-shaped, preferably circular part, which spreads like a plate in the axial direction.
- Should the wall parts have the purpose of being load-transmitting or load-bearing in the radial direction; that is to say, when they form so-called struts or stays, an airfoil shape is not always required, nor is the shape of hollow blades, but rather said plate-shape can suffice. A plurality of different configurations are, however, possible.
- Should the second wall parts have the purpose of guiding a gas flow during operation of the component, the mutually connected second wall parts form the shape of a blade, for example, having an airfoil shape in cross section. Such a blade shape is utilized when the component is used in specific stator applications.
- The first wall part is not limited to just rounded or curved cross-sectional shape, but rather, for example, a square cross-sectional shape, that is to say made up of essentially straight portions of different direction, are also included.
- By the expression that the wall parts extend in a certain direction with respect to the component, it is meant that at least one component of the extent of the wall part lies in this direction. Preferably, the wall part extends substantially in this direction. In other words, the wall part in question extends in a plane parallel with said direction.
- The stator component can, for example, form an inlet part, an intermediate housing, a turbine-exhaust housing, that is to say a concluding housing part, or a part of this for a gas turbine. Its primary function is in this case to act as a bearing fastening, for the transmission of loads, and to provide a duct for gases.
- By the expression that a wall part is placed such that it extends in the intended radial direction of the component, it is meant both that the wall part is placed directly in a structure in the radial direction of the component and that the wall part is first mounted in a section and that a plurality of such sections are then mutually connected in the circumferential direction so that the wall part ends up in said radial direction.
- The equivalent applies to when a wall part is placed so that it extends in the intended axial direction of the component and in its circumferential direction.
- The invention will not be deemed limited to the illustrative embodiments described above, but a host of further variants and modifications are conceivable within the scope of the subsequent patent claims.
- The connection of a wall part extending in the radial direction to another wall part extending in the radial direction can further be effected differently than arranging a cover plate therebetween. For example, the wall parts can be arranged relatively close together and connected by the application of material, by welding and the like. Further, the cover plates can be fixed in a number of different of ways, such as riveting and gluing.
- It is further conceivable for a plurality of separate sections to be made, each comprising a first and a second wall part, and which sections each in cross section form the sector of a circle. The sections are then connected in the intended circumferential direction of the component to form the stator or rotor component. In other words, in the construction of the section, the second wall part is arranged in the intended radial direction of the component and the first wall part in the intended circumferential direction of the component. When a plurality of such sections are put together, the second wall part thus ends up such that it extends in the radial direction of the component and the first wall part such that it extends in the circumferential direction of the component.
Claims (23)
1. A method for manufacturing a stator or rotor component (21) which is intended during operation to conduct a gas flow, said method comprising:
placing a first wall part (1, 14, 15, 114) with one edge (3) thereof bearing against the flat side (4) of a second wall part (4, 9, 109) and thereby extending in the intended radial direction of the component in such a way that the first wall part extends in the intended circumferential direction of the component; and
laser-welding the edge of the first wall part to said second wall part from, in the circumferential direction, an opposite side of the second wall part in relation to the first wall part in such a way that the joined-together portions of the wall parts form a T-shaped joint (5).
2. The method as recited in claim 1 , wherein the first wall part (1, 14, 15, 114) is placed essentially perpendicular to the flat side of the second wall part (4, 9, 109).
3. The method as recited in claim 1 , wherein the second wall part (4, 9, 109) is arranged to extend in the axial direction of the component.
4. The method as recited in claim 1 , wherein the first wall part (1, 14, 15, 114) is arranged to extend in the axial direction of the component.
5. The method as recited in claim 1 , wherein the second wall part (4, 9, 109), extending in the radial direction, is arranged to limit a gas duct (20) in the circumferential direction of the component.
6. The method as recited in claim 1 , wherein the second wall part (4, 9, 109) is arranged such that it has said essentially radial widening for guidance of said gas flow during operation of the component.
7. The method as recited in claim 1 , wherein the second wall part (4, 9, 109) is arranged such that it has said essentially radial widening for transmitting load during operation of the component.
8. The method as recited in claim 1 , wherein the first wall part (1, 14, 15, 114), extending in the circumferential direction, is arranged to limit a gas duct (20) in the radial direction.
9. The method as recited in claim 1 , wherein the first wall part (1, 14, 15, 114) has a shape which curves essentially in said circumferential direction.
10. The method as recited in claim 1 , wherein the first wall part (14, 15) is placed with a second edge, which is opposite to the first-named edge, bearing against the flat side of a further second wall part (10, 110), which is arranged at a distance in the circumferential direction from the first-named second wall part (9), and is connected thereto.
11. The method as recited in claim 10 , wherein the edge of the first wall part (14, 15, 114) is laser-welded to the second wall part (10, 110) from an, in the circumferential direction, opposite side of the second wall part in relation to the first wall part in such a way that the joined-together portions of the wall parts form a T-shaped joint (5).
12. The method as recited in claim 10 , wherein the two wall parts (9, 10, 109, 110) which are spaced apart in the circumferential direction constitute at least part of two different blades for guidance of a gas flow.
13. The method as recited in claim 10 , wherein the two wall parts (9, 10, 109, 110) which are spaced apart in the circumferential direction constitute at least part of two different stays for transmission of load.
14. The method as recited in claim 11 , wherein the two second wall parts (9, 10) are formed by a single, substantially U-shaped element (6).
15. The method as recited in claim 1 , wherein said first and second wall part (9, 10, 14, 15) are arranged between an inner and outer ring element (7, 8) in the radial direction.
16. The method as recited in claim 15 , wherein said second wall part (9, 10) is connected to at least one of the ring elements (7, 8) by laser-welding from an, in the radial direction, opposite side of the ring element in relation to the second wall part in such a way that the joined-together portions form a T-shaped joint (5).
17. The method as recited in claim 14 , wherein said U-shaped element (6), prior to said laser-welding of the wall parts, is arranged between the inner ring element (7) and the outer ring element (8).
18. The method as recited in claim 1 , wherein said stator component (21) has an essentially circular cross-sectional shape and in that a plurality of ducts (20) for conduction of the gas flow extend in the axial direction between an inner and an outer ring.
19. The method as recited in claim 1 , wherein said rotor component (23) has an essentially circular cross-sectional shape and in that a plurality of ducts (20) for conduction of the gas flow extend in the axial direction between an inner and an outer ring.
20. The method as recited in claim 1 , wherein said stator component (21) is configured for a gas turbine.
21. The method as recited in claim 1 , wherein said rotor component (23) is configured for a gas turbine.
22. The method as recited in claim 1 , wherein said stator component (21) is intended for a jet engine.
23. The method as recited in claim 1 , wherein said rotor component (23) is intended for a jet engine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/906,324 US20050246894A1 (en) | 2002-08-14 | 2005-02-14 | Method for manufacturing a stator or rotor component |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40294602P | 2002-08-14 | 2002-08-14 | |
SE0202422A SE525168C2 (en) | 2002-08-14 | 2002-08-14 | Process for producing a stator or rotor component |
SE0202422-2 | 2002-08-14 | ||
PCT/SE2003/001145 WO2004016911A1 (en) | 2002-08-14 | 2003-06-30 | Method for manufacturing a stator or rotor component |
US10/906,324 US20050246894A1 (en) | 2002-08-14 | 2005-02-14 | Method for manufacturing a stator or rotor component |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2003/001145 Continuation WO2004016911A1 (en) | 2002-08-14 | 2003-06-30 | Method for manufacturing a stator or rotor component |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050246894A1 true US20050246894A1 (en) | 2005-11-10 |
Family
ID=31890630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/906,324 Abandoned US20050246894A1 (en) | 2002-08-14 | 2005-02-14 | Method for manufacturing a stator or rotor component |
Country Status (9)
Country | Link |
---|---|
US (1) | US20050246894A1 (en) |
EP (1) | EP1540141B1 (en) |
JP (1) | JP4481823B2 (en) |
AT (1) | ATE362037T1 (en) |
AU (1) | AU2003242170A1 (en) |
DE (1) | DE60313782T2 (en) |
ES (1) | ES2285131T3 (en) |
RU (1) | RU2331778C2 (en) |
WO (1) | WO2004016911A1 (en) |
Cited By (2)
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US20140027416A1 (en) * | 2012-07-27 | 2014-01-30 | Foxconn Technology Co., Ltd. | Method for manufacturing rotor |
US9409251B2 (en) | 2011-10-12 | 2016-08-09 | Asml Netherlands B.V. | Radiation beam welding method, body and lithographic apparatus |
Families Citing this family (13)
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JP5118568B2 (en) * | 2008-07-22 | 2013-01-16 | 株式会社日立製作所 | Exhaust diffuser for gas turbine |
WO2010071499A1 (en) * | 2008-12-19 | 2010-06-24 | Volvo Aero Corporation | Spoke for a stator component, stator component and method for manufacturing a stator component |
CH703309A1 (en) | 2010-06-10 | 2011-12-15 | Alstom Technology Ltd | Exhaust housing for a gas turbine and method for producing such an exhaust housing. |
US9765648B2 (en) | 2011-12-08 | 2017-09-19 | Gkn Aerospace Sweden Ab | Gas turbine engine component |
CN104053859B (en) | 2011-12-20 | 2016-03-23 | Gkn航空公司 | For the manufacture of the method for gas turbine component |
US9689312B2 (en) | 2011-12-22 | 2017-06-27 | Gkn Aerospace Sweden Ab | Gas turbine engine component |
US10012108B2 (en) | 2011-12-23 | 2018-07-03 | Gkn Aerospace Sweden Ab | Gas turbine engine component |
WO2013095211A1 (en) * | 2011-12-23 | 2013-06-27 | Volvo Aero Corporation | Support structure for a gas turbine engine |
RU2494849C1 (en) * | 2012-04-18 | 2013-10-10 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" | Method of producing of distributor |
RU2653396C1 (en) * | 2016-12-19 | 2018-05-08 | Публичное акционерное общество "Региональный инжиниринговый центр промышленных лазерных технологий "КАИ-Лазер" | Method of manufacturing the t-beam with laser beam |
RU2697545C1 (en) * | 2018-08-17 | 2019-08-15 | Акционерное общество "Центр технологии судостроения и судоремонта" (АО "ЦТСС") | Method for laser-arc welding of fillet welds of t-joints |
US11331752B2 (en) * | 2018-08-30 | 2022-05-17 | Ipg Photonics Corporation | Backside surface welding system and method |
JP7344558B2 (en) * | 2020-02-25 | 2023-09-14 | デルタ工業株式会社 | Laser welding method and laser welding device |
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- 2003-06-30 AT AT03733815T patent/ATE362037T1/en not_active IP Right Cessation
- 2003-06-30 AU AU2003242170A patent/AU2003242170A1/en not_active Abandoned
- 2003-06-30 EP EP03733815A patent/EP1540141B1/en not_active Expired - Lifetime
- 2003-06-30 ES ES03733815T patent/ES2285131T3/en not_active Expired - Lifetime
- 2003-06-30 JP JP2004528985A patent/JP4481823B2/en not_active Expired - Fee Related
- 2003-06-30 DE DE60313782T patent/DE60313782T2/en not_active Expired - Lifetime
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US20140027416A1 (en) * | 2012-07-27 | 2014-01-30 | Foxconn Technology Co., Ltd. | Method for manufacturing rotor |
Also Published As
Publication number | Publication date |
---|---|
EP1540141A1 (en) | 2005-06-15 |
DE60313782D1 (en) | 2007-06-21 |
WO2004016911A1 (en) | 2004-02-26 |
JP4481823B2 (en) | 2010-06-16 |
DE60313782T2 (en) | 2008-01-24 |
RU2331778C2 (en) | 2008-08-20 |
JP2005535826A (en) | 2005-11-24 |
EP1540141B1 (en) | 2007-05-09 |
ATE362037T1 (en) | 2007-06-15 |
AU2003242170A1 (en) | 2004-03-03 |
RU2005107321A (en) | 2006-04-20 |
ES2285131T3 (en) | 2007-11-16 |
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Owner name: VOLVO AERO CORPORATION, SWEDEN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LUNDGREN, JAN;REEL/FRAME:015682/0834 Effective date: 20050114 |
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