Christopher L English

US Patent:

6568077, May 27, 2003

Filed:

May 11, 2000

Appl. No.:

09/567243

Inventors:

Leslie McLean Hellemann - Lebanon OH
Christopher Lee English - Mason OH
Bruce Leonard Borne - Florence KY
Ronald Clarence Glover - Batavia OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

B23P 600

US Classification:

298891, 298897, 228 19

Abstract:

Damage in a blisk airfoil is machined away to create a notch. A repair is welded in the airfoil to fill the notch. The weld repair is then machined to restore the airfoil to a substantially original, pre-damaged configuration at the repair.

US Patent:

20170080520, Mar 23, 2017

Filed:

Sep 18, 2015

Appl. No.:

14/858267

Inventors:

- Schenectady NY, US
Timothy Joseph Trapp - Wyoming OH, US
Christopher Lee English - Mason OH, US
Daniel Yeuching Wei - Reading MA, US

International Classification:

B23K 20/12

Abstract:

An inertia welding method includes: mounting two workpieces in an inertia welding apparatus; rotating a least one of the workpieces, so as to produce relative rotation of the two workpieces at a predetermined RPM; forcing together the two workpieces with predetermined first weld load so as to cause frictional heating at an interface therebetween; maintaining the first weld load for a first interval; forcing together the two workpieces with a predetermined second weld load greater than the first weld load so as to cause material upset and bonding between the two workpieces, while the rotation brakes to a stop, terminating the weld process; wherein the first and second weld loads are selected so as a produce a specific temperature-distance profile in a selected one of the workpieces, at the termination of the weld process.