(19)
(11) EP 2 620 516 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.08.2013 Bulletin 2013/33

(43) Date of publication A2:
31.07.2013 Bulletin 2013/31

(21) Application number: 12199843.9

(22) Date of filing: 31.12.2012
(51) International Patent Classification (IPC): 
C21D 9/50(2006.01)
B23P 6/04(2006.01)
C21D 1/74(2006.01)
C22F 1/18(2006.01)
 F01D 5/00(2006.01)
C22F 1/02(2006.01)
C22F 1/10(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 30.01.2012 US 201213361283

(71) Applicant: United Technologies Corporation
Hartford, CT 06101 (US)

(72) Inventors:
  • Lin, Wangen
    South Glastonbury, CT Connecticut 06073 (US)
  • Moor, James J.
    New Hartford, CT Connecticut 06057 (US)
  • DeMichael, Thomas
    Stafford Springs, CT Connecticut 06076 (US)
  • Chin, Herbert A.
    Portland, CT Connecticut 06480 (US)
  • Hill, Melissa R.
    Manchester, CT Connecticut 06042 (US)
  • Labbe, Michael J.
    Hebron, CT Connecticut 06248 (US)

(74) Representative: Tomlinson, Kerry John 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Method and apparatus of heat treating an integrally bladed rotor


(57) A process for heat treating selected portions of an integrally bladed rotor (IBR) (10) having a plurality of blades (11,23), the process using an IBR on a fixture (211) having a rotor engaging portion that moves the IBR into an environmental chamber (215). An IR heater (27) is placed on one of the IBR blades (11) and heat treated after air has been removed from the chamber and an inert gas is added. The IR heater is lifted from the blade and indexed to position another blade on the IBR. The process is repeated until all the IBR blades are heat treated.







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