US3564689A - Method of fabricating a turbine blade having a leading edge formed of weld metal - Google Patents

Method of fabricating a turbine blade having a leading edge formed of weld metal Download PDF

Info

Publication number
US3564689A
US3564689A US732394A US3564689DA US3564689A US 3564689 A US3564689 A US 3564689A US 732394 A US732394 A US 732394A US 3564689D A US3564689D A US 3564689DA US 3564689 A US3564689 A US 3564689A
Authority
US
United States
Prior art keywords
blade
blank
turbine blade
leading edge
fabricating
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.)
Expired - Lifetime
Application number
US732394A
Other languages
English (en)
Inventor
Julius Hirtenlechner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Application granted granted Critical
Publication of US3564689A publication Critical patent/US3564689A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F15/00—Methods or machines for making gear wheels of special kinds not covered by groups B23F7/00 - B23F13/00
    • B23F15/04—Making fine-pitch gear teeth on clock wheels or the like by special machining
    • 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
    • B23P15/04—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
    • 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
    • Y10T29/49336—Blade making
    • Y10T29/49337—Composite blade
    • 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
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting

Definitions

  • This invention relates to the production of turbine blades.
  • the invention relates to a process for the manufacture of turbine blades which will meet all these requirements which are the result of modern technological development.
  • the blades for example, from a blank made through rolling or forging, by means of cutting or noncutting treatment, or through casting the blades in their final dimensions, or slightly beyond those dimensions according to wax melting, form masking or other processes.
  • the 13% chrome steels which, in view of the partial surface hardening had been more highly carbonated at the edges of the blades, are less corrosion resistant when they are annealed in the area of 500-650 C. and, moreover, they show essentially no improved strength values in comparison with the low carbonated types if one wants to prevent unocntrollable annealing processes during the surface hardening, and if one increases the annealing temperature beyond 650-700 C.
  • the invention proposes a new production process for turbine blades, which process is characterized in that a blade blank, produced in the customary manner, is provided at the area of the inlet edge with a steel plate portion that is welded in pre-prepared recess, for example, the weld material consisting of an alloy made of hard metal of high-speed steel, or something similar.
  • the portion is built up by welding and any uneven spots in the welded portion are smoothed.
  • the weld portion is shaped to the final dimension in a drop forge, together with the body of the blade, and the turbine blade is finally subjected to heat treatment.
  • FIG. 1 is a view showing a blade blank in cross-section produced, for example, through a forging or cutting treatment
  • FIG. 2 is a cross-sectional view showing the blank with a welded steel plate portion
  • FIG. 3 is a cross-sectional view showing the turbine blade obtained after drop forging, precisely to measurement, and subsequent heat treatment.
  • a corresponding section is rough forged in such a manner that it can be shaped with as few strokes as possible in a preliminary drop forge without too great a flow of material.
  • This blank is freed, in the customary manner, of the flash under a trimming press while retaining the forging heat, and which flash was formed from the excess material between the two halves of the drop forge around the contour of the blank.
  • the preparation for a welded steel plate portion 2 takes place by cutting out a groove 1 in parallelism to the longitudinal extent of the blade blank on the leading edge area ('FIG. 1).
  • This groove could be provided during the drop forging; if not, it can be produced by material cutting processes, for example, a cutting treatment or an electro-erosive treatment.
  • the groove and the adjacent area of the blank are carefully descaled so that a good metallic interface, free from the inclusion of oxide, will occur with the hard weld alloy 2 that is to be applied.
  • a careful preheating will take place, such as by resistance or induction heating.
  • the application of the welding material to form the portion is accomplished by means of known fusion welding processes, whereby, if need be, welding under a protective gas or under slag, with or without feeding of fluxing agents from the casing of the electrode or through a welding powder can be utilized if the alloys require it.
  • the uneven spots resulting from the welding beads in the weld portion can be smoothed, for example, by grinding.
  • the blanks is the again heated slowly and intensively, and is shaped to the final dimensions in a finishing drop forge of precise measurements.
  • the slight flash developing during this step is removed through some mechanical process, for example, grinding, and the blade is then hardened by heat-treatment.
  • a straightening step can take place for the elimination of any distortion (warpage) which may possibly have occurred through the hardening process.
  • a special Quette be used for aligning. Insignificant deviations from the size tolerance, which still exists after removing (by polishing) the superficial accumulations of material, are eleminated by subsequent aligning in the cold state.
  • a method as claimed in claim 1 comprising the further steps of descaling said steel blade blank and especially said recess, as well as preheating said blank prior to said welding step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Heat Treatment Of Articles (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
US732394A 1967-05-26 1968-05-27 Method of fabricating a turbine blade having a leading edge formed of weld metal Expired - Lifetime US3564689A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT489267A AT275283B (de) 1967-05-26 1967-05-26 Verfahren zur Herstellung von Turbinenschaufeln

Publications (1)

Publication Number Publication Date
US3564689A true US3564689A (en) 1971-02-23

Family

ID=3569561

Family Applications (1)

Application Number Title Priority Date Filing Date
US732394A Expired - Lifetime US3564689A (en) 1967-05-26 1968-05-27 Method of fabricating a turbine blade having a leading edge formed of weld metal

Country Status (6)

Country Link
US (1) US3564689A (de)
AT (1) AT275283B (de)
DE (1) DE1752430A1 (de)
FR (1) FR1571606A (de)
GB (1) GB1188780A (de)
SE (1) SE340554B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660882A (en) * 1969-04-28 1972-05-09 Boehler & Co Ag Geb Process for the production of turbine blades
US3794445A (en) * 1969-10-31 1974-02-26 Hitachi Ltd Water turbine runner
US3834833A (en) * 1972-02-18 1974-09-10 Bbc Brown Boveri & Cie Blade construction for axial-flow turbo-machines and method of protecting turbo-machine blades against stress corrosion cracking
US4028787A (en) * 1975-09-15 1977-06-14 Cretella Salvatore Refurbished turbine vanes and method of refurbishment thereof
US4028788A (en) * 1976-01-12 1977-06-14 Demusis Ralph T Method of refurbishing turbine blade air seal flanges
US4208169A (en) * 1977-02-26 1980-06-17 Klein, Schanzlin & Becker Aktiengesellschaft Impeller for centrifugal pumps
US4563801A (en) * 1982-09-24 1986-01-14 Klein, Schanzlin & Becker Aktiengesellschaft Method of reinforcing the edges of impeller vanes or the like
US4832252A (en) * 1986-12-20 1989-05-23 Refurbished Turbine Components Limited Parts for and methods of repairing turbine blades
US4866828A (en) * 1981-01-12 1989-09-19 Refurbished Turbine Components Limited Method of repairing turbine blades
US4940390A (en) * 1988-05-05 1990-07-10 Westinghouse Electric Corp. Turbine system having more failure resistant rotors and repair welding of low alloy ferrous turbine components by controlled weld build-up
US5092942A (en) * 1989-03-28 1992-03-03 Refurbished Turbine Components Limited Method of repairing or modifying turbine blades
JP2000356102A (ja) * 1999-05-12 2000-12-26 Mtu Motoren & Turbinen Union Muenchen Gmbh 流体工学的表面を適合表面として形成する方法
USRE37562E1 (en) * 1988-05-05 2002-02-26 Siemens Westinghouse Power Corporation Turbine system having more failure resistant rotors and repair welding of low alloy ferrous turbine components by controlled weld build-up
US20020174540A1 (en) * 2001-05-26 2002-11-28 Milburn Richard G. Method of manufacturing an article
RU2256527C1 (ru) * 2004-01-14 2005-07-20 Открытое акционерное общество "Пермский моторный завод" Способ изготовления лопаток
US20090126838A1 (en) * 2007-11-16 2009-05-21 General Electric Company Uniform heat treatment process for hardening steel
US10428657B2 (en) 2013-06-21 2019-10-01 Pratt & Whitney Canada Corp. Method for repairing a blade
US11286782B2 (en) 2018-12-07 2022-03-29 General Electric Company Multi-material leading edge protector

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3139871A1 (de) * 1981-10-07 1983-04-21 Busatis-Werke GmbH u. Co KG, 5630 Remscheid Beschichtete schneidmesser bzw. reibverschleissteile
GB2227190B (en) * 1989-01-24 1992-12-16 Refurbished Turbine Components Turbine blade repair
RU2318121C1 (ru) * 2006-08-14 2008-02-27 Открытое Акционерное Общество "Всероссийский теплотехнический научно-исследовательский институт" (ОАО "ВТИ") Способ упрочнения поверхности рабочей лопатки паровой турбины с использованием защитных накладок
DE102013005582B3 (de) * 2013-04-03 2014-01-02 FEW Fahrzeug- und Entwicklungswerk Blankenburg GmbH Verfahren zur Herstellung verschleißfester Wirkflächen von miteinander in Wirkverbindung stehenden metallischen Bauteilen

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660882A (en) * 1969-04-28 1972-05-09 Boehler & Co Ag Geb Process for the production of turbine blades
US3794445A (en) * 1969-10-31 1974-02-26 Hitachi Ltd Water turbine runner
US3834833A (en) * 1972-02-18 1974-09-10 Bbc Brown Boveri & Cie Blade construction for axial-flow turbo-machines and method of protecting turbo-machine blades against stress corrosion cracking
US4028787A (en) * 1975-09-15 1977-06-14 Cretella Salvatore Refurbished turbine vanes and method of refurbishment thereof
US4121894A (en) * 1975-09-15 1978-10-24 Cretella Salvatore Refurbished turbine components, such as vanes or blades
US4141127A (en) * 1975-09-15 1979-02-27 Cretella Salvatore Method of refurbishing turbine vane or blade components
US4028788A (en) * 1976-01-12 1977-06-14 Demusis Ralph T Method of refurbishing turbine blade air seal flanges
US4208169A (en) * 1977-02-26 1980-06-17 Klein, Schanzlin & Becker Aktiengesellschaft Impeller for centrifugal pumps
US4866828A (en) * 1981-01-12 1989-09-19 Refurbished Turbine Components Limited Method of repairing turbine blades
US4563801A (en) * 1982-09-24 1986-01-14 Klein, Schanzlin & Becker Aktiengesellschaft Method of reinforcing the edges of impeller vanes or the like
US4832252A (en) * 1986-12-20 1989-05-23 Refurbished Turbine Components Limited Parts for and methods of repairing turbine blades
US4940390A (en) * 1988-05-05 1990-07-10 Westinghouse Electric Corp. Turbine system having more failure resistant rotors and repair welding of low alloy ferrous turbine components by controlled weld build-up
USRE37562E1 (en) * 1988-05-05 2002-02-26 Siemens Westinghouse Power Corporation Turbine system having more failure resistant rotors and repair welding of low alloy ferrous turbine components by controlled weld build-up
US5092942A (en) * 1989-03-28 1992-03-03 Refurbished Turbine Components Limited Method of repairing or modifying turbine blades
JP2000356102A (ja) * 1999-05-12 2000-12-26 Mtu Motoren & Turbinen Union Muenchen Gmbh 流体工学的表面を適合表面として形成する方法
US20020174540A1 (en) * 2001-05-26 2002-11-28 Milburn Richard G. Method of manufacturing an article
US6802122B2 (en) * 2001-05-26 2004-10-12 Rolls-Royce Plc Method of manufacturing an article
RU2256527C1 (ru) * 2004-01-14 2005-07-20 Открытое акционерное общество "Пермский моторный завод" Способ изготовления лопаток
US20090126838A1 (en) * 2007-11-16 2009-05-21 General Electric Company Uniform heat treatment process for hardening steel
US7901523B2 (en) 2007-11-16 2011-03-08 General Electric Company Uniform heat treatment process for hardening steel
US10428657B2 (en) 2013-06-21 2019-10-01 Pratt & Whitney Canada Corp. Method for repairing a blade
US11286782B2 (en) 2018-12-07 2022-03-29 General Electric Company Multi-material leading edge protector

Also Published As

Publication number Publication date
FR1571606A (de) 1969-06-20
AT275283B (de) 1969-10-27
GB1188780A (en) 1970-04-22
SE340554B (de) 1971-11-22
DE1752430A1 (de) 1971-05-27

Similar Documents

Publication Publication Date Title
US3564689A (en) Method of fabricating a turbine blade having a leading edge formed of weld metal
US3660882A (en) Process for the production of turbine blades
US1887372A (en) Cutting and forming tools, implements, and the like
US6059898A (en) Induction hardening of heat treated gear teeth
US5795412A (en) Method of manufacturing and repairing a blade made of α-β titanium
US4212189A (en) Tool for isothermal forging
US4608851A (en) Warm-working of austenitic stainless steel
EP2540963A2 (de) Turbinenscheiben-Vorform, geschweißter Turbinenrotor damit und Herstellungsverfahren dafür
US1948793A (en) Method of making valves
US9719596B2 (en) Piston ring for internal combustion engines with increased fatigue strength, and method for producing same
US2302229A (en) Manufacture of propeller blades
US2703922A (en) Composite turbine rotor disc and method of making same
JP3228440B2 (ja) 耐ヒートクラック性にすぐれる熱間加工用金型
US2959843A (en) Method of producing turbine blades
US2707680A (en) Alloy of iron, nickel, and molybdenum
JPS60141823A (ja) 非磁性エンドリングの製造方法
US3471340A (en) Regeneration of refused rolls
US2712688A (en) Method of making fluid directing member
JPH089045B2 (ja) 冷間管圧延機用孔型ロール及びその製造方法
JP2948047B2 (ja) 水冷穴を有するダイカスト金型の製造方法
CN110730696B (zh) 制造碳推力轴承的扇形件的方法
JP7435909B1 (ja) 電縫管およびその製造方法
JP3716454B2 (ja) 温間ホビングによる高強度、高靭性金型の製造方法
JPS62240149A (ja) 連続鋳造機用鋳片案内ロ−ル
RU2792019C1 (ru) Способ изготовления крупногабаритных профильных кольцевых изделий из коррозионностойкой жаропрочной стали