(19)
(11) EP 1 649 954 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.10.2006 Bulletin 2006/41

(43) Date of publication A2:
26.04.2006 Bulletin 2006/17

(21) Application number: 05255133.0

(22) Date of filing: 19.08.2005
(51) International Patent Classification (IPC): 
B22F 3/15(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 20.10.2004 US 969160

(71) Applicant: UNITED TECHNOLOGIES CORPORATION
Hartford, CT 06101 (US)

(72) Inventor:
  • Das, Gopal
    Simsbury, CT 06070 (US)

(74) Representative: Hall, Matthew Benjamin 
Frank B. Dehn & Co. St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Low porosity powder metallurgy produced components


(57) Components produced by powder metallurgy techniques are described herein. Embodiments of these components have little or no porosity therein after processing. Embodiments of these components are created by creating a preform from a powder; creating a component from the preform; heat treating the component to create a predetermined microstructure therein; and then hot isostatic pressing the heat treated component to reduce any porosity therein. The components can then be machined to their final dimensions, if necessary.







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