Method for modifying an airfoil shroud and airfoil

(19)

(11)

EP 2 735 704 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	13.12.2017 Bulletin 2017/50

(43)	Date of publication A2:
	28.05.2014 Bulletin 2014/22

(21)	Application number: 13193500.9

(22)	Date of filing: 19.11.2013

(51)

International Patent Classification (IPC):

F01D 5/20^(2006.01)
F01D 5/00^(2006.01)

F01D 5/22^(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:

27.11.2012 US 201213685950

(71)	Applicant: General Electric Company
	Schenectady, NY 12345 (US)

(72)	Inventors:
	Ward, John David Greenville, SC South Carolina 29615 (US) Aaron, Kelvin Rono Greenville, SC South Carolina 29615 (US) Connor, James Ryan Greenville, SC South Carolina 29615 (US) Myers, Melbourne James Greenville, SC South Carolina 29615 (US) Van Tassel, Brad Wilson Greenville, SC South Carolina 29615 (US)

(74)	Representative: Pöpper, Evamaria et al
	General Electric Technology GmbH GE Corporate Intellectual Property Brown Boveri Strasse 7 5400 Baden 5400 Baden (CH)

(54)	Method for modifying an airfoil shroud and airfoil

(57) According to one aspect of the invention, a method is provided for modifying an airfoil shroud 400 located at a tip of an airfoil, the airfoil shroud 400 having a first end edge 406, a second end edge 408, a leading edge 402 and a trailing edge hundred and 4. The method includes locating a reference location 410 in the first end edge 406 of the airfoil shroud 400, the reference location 410 being proximate a seal rail 412 extending circumferentially from the substantially horizontal surface and forming a relief cut 500 in the airfoil shroud 400 to remove the reference location 410, wherein a modifying of the airfoil shroud 400 is complete following forming of the relief cut 500.

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