Patent ID: 8141249

Claim:
An apparatus for heat-treating a welded area of a repaired cam follower track of a gas turbine engine, the cam follower track comprising: a first elongate and straight edge extending along the repaired cam follower track, the first elongate edge having the welded area; a second elongate and straight edge extending along the repaired cam follower track spaced from the first elongate and straight edge to define an elongate and straight recess having inner dimensions, the apparatus comprising: a first heating element sized to substantially mate with and abut the inner dimensions of the elongate and straight recess in the cam follower track, the first heating element positioned adjacent the welded area, the first heating element comprising: a first insulating tube; a first support rod inside the first insulating tube; and a first wire disposed around the outside of the first insulating tube; and a second heating element sized to fit along an outside of the cam follower track recess adjacent the welded area and being larger than the first heating element, the second heating element comprising: a second insulating tube; a second support rod inside the second insulating tube; and a second wire disposed around the outside of the second insulating tube; and wherein the first heating element fits between the first and second elongate and straight edges within the cam follower track elongate and straight recess, and the second heating element is disposed outside the cam follower track elongate and straight recess alongside the welded area of the first elongate and straight edge.