IN2014DE00755A - - Google Patents

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Publication number
IN2014DE00755A
IN2014DE00755A IN755DE2014A IN2014DE00755A IN 2014DE00755 A IN2014DE00755 A IN 2014DE00755A IN 755DE2014 A IN755DE2014 A IN 755DE2014A IN 2014DE00755 A IN2014DE00755 A IN 2014DE00755A
Authority
IN
India
Prior art keywords
rotor
welding
discs
weld
gap
Prior art date
Application number
Inventor
Sorin Keller
Werner Martin Balbach
Gianni Giorgi
Holger Kiewel
Original Assignee
Alstom Technology Ltd
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 Alstom Technology Ltd filed Critical Alstom Technology Ltd
Publication of IN2014DE00755A publication Critical patent/IN2014DE00755A/en

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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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • F01D5/063—Welded rotors
    • 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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004—Filling of continuous seams
    • B23K33/006—Filling of continuous seams for cylindrical workpieces
    • 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
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/0213—Narrow gap 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
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • 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
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
    • 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
    • B23K9/18—Submerged-arc 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
    • B23K9/00—Arc welding or cutting
    • B23K9/18—Submerged-arc welding
    • B23K9/186—Submerged-arc welding making use of a consumable electrodes
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • 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

Abstract

The invention relates to a method for welding rotors for power generation (gas turbines, steam turbines, generators), which comprise a plurality of rotor discs arranged along a rotor axis, said method comprising the steps of: providing forged and NDT tested rotor discs (26); machining said discs (26) for weld seam preparation, said weld seam preparation comprising an inner narrow TIG welding gap and an adjoining outer SAW welding gap; stapling the discs (26) on top of each other; checking the run-out of the stapled discs (26) relative to each other and as a whole and, if necessary, adjusting the staple; melting the root of the weld without weld filler using TIG welding; increasing the weld height by narrow gap TIG welding with parent metal weld filler to allow tilting of the rotor in horizontal position. tilting the rotor in horizontal position; finalizing the welding by filling the outer SAW welding gap using SAW welding; and checking the welds of the rotor by NDT using ultrasonic testing. A costly and time-consuming additional machining step is avoided by said weld seam preparation machining step comprising preparing an optimized transition geometry of TIG welding gap to SAW welding gap transition with a first opening (28) having a first opening angle and a second opening (29) having a second opening angle greater than said first opening angle.
IN755DE2014 2013-04-04 2014-03-14 IN2014DE00755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13162319.1A EP2787167B1 (en) 2013-04-04 2013-04-04 Method for welding rotors for power generation

Publications (1)

Publication Number Publication Date
IN2014DE00755A true IN2014DE00755A (en) 2015-06-19

Family

ID=48040096

Family Applications (1)

Application Number Title Priority Date Filing Date
IN755DE2014 IN2014DE00755A (en) 2013-04-04 2014-03-14

Country Status (7)

Country Link
US (1) US9441487B2 (en)
EP (1) EP2787167B1 (en)
JP (1) JP6124833B2 (en)
KR (1) KR20140120828A (en)
CN (1) CN104096953B (en)
CA (1) CA2847970C (en)
IN (1) IN2014DE00755A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6581498B2 (en) * 2015-12-25 2019-09-25 三菱重工コンプレッサ株式会社 Turbine rotor disk repair method
CN105522259A (en) * 2016-02-03 2016-04-27 江苏电力装备有限公司 Narrow-gap argon arc automatic welding and union melt welding combined welding method of thick-wall pipes
CN106238867B (en) * 2016-08-25 2018-03-09 湘潭大学 A kind of narrow gap welding control method for applying adaptive flat peak pulse signal
CN115255575B (en) * 2022-08-15 2023-09-19 哈尔滨电机厂有限责任公司 Submerged arc welding manufacturing method for primary stud of hydraulic generator

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US2415987A (en) * 1943-05-27 1947-02-18 W K Mitchell & Company Inc Apparatus for butt welding
CH595011A5 (en) 1975-06-19 1978-01-31 Bbc Brown Boveri & Cie
CH594471A5 (en) 1976-07-02 1978-01-13 Bbc Brown Boveri & Cie
SU634880A1 (en) 1977-06-03 1978-11-30 Харьковский Турбинный Завод Им. С.М.Кирова Welded runner for steam turbine
CH667611A5 (en) 1985-02-28 1988-10-31 Bbc Brown Boveri & Cie METHOD FOR PRODUCING A CONTROL WHEEL FOR THE HIGH PRESSURE ROTOR OF A STEAM TURBINE.
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ES2129086T3 (en) * 1994-01-29 1999-06-01 Asea Brown Boveri PROCEDURE TO JOIN METAL PIECES BY WELDING BY FUSION WITH VOLTAIC ARC.
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JP3304815B2 (en) * 1997-04-08 2002-07-22 住友金属工業株式会社 Manufacturing method of thick wall large diameter welded steel pipe
JP3530395B2 (en) * 1998-09-29 2004-05-24 三菱重工業株式会社 Welding methods, welded joints and welded structures
JP2002011575A (en) * 2000-06-30 2002-01-15 Kawasaki Steel Corp Welding method for steel pipe
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US6828526B1 (en) * 2003-05-15 2004-12-07 Alcoa Inc. Gas metal buried arc welding of lap-penetration joints
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CH700542A1 (en) * 2009-03-03 2010-09-15 Alstom Technology Ltd Method for connecting two particular rotation balanced, metal, by means of a wolframinert-gas (tig) -schweissverfahrens and device for implementing the process.
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Also Published As

Publication number Publication date
JP6124833B2 (en) 2017-05-10
EP2787167A1 (en) 2014-10-08
JP2014202212A (en) 2014-10-27
US9441487B2 (en) 2016-09-13
CN104096953B (en) 2017-06-06
CA2847970C (en) 2016-08-02
KR20140120828A (en) 2014-10-14
EP2787167B1 (en) 2018-12-26
RU2014111172A (en) 2015-09-27
CA2847970A1 (en) 2014-10-04
US20140299580A1 (en) 2014-10-09
CN104096953A (en) 2014-10-15

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