Patent ID: 8906181
Filing Date: 2014-12-09
Classification: B23P,C21D,C22F,F01D,F04D,F05D,Y02T,Y10T

Abstract:
1. A method of finishing an aluminum fan blade with an airfoil, a blade root, a leading edge and a tip, the method comprising: bonding a sheath and a cover to the aluminum fan blade; imparting residual stresses onto the aluminum fan blade by peening; coating the aluminum fan blade with a first primer to protect exposed areas of the aluminum fan blade; bonding wear pads to the blade root with a first adhesive; painting the aluminum fan blade with a coating; and curing the first primer, the coating, and the first adhesive in low-temperature cure cycles below 250 degrees F. (394 degrees K) to preserve residual stresses imparted.