Abstract: A method of repairing blade members, especially blade members in a turbomachine is provided. In one example, a damaged portion of a blade member is cut away from the blade member, by milling for example. The extent of the cut away portion generally corresponds in size and/or shape to the damaged area. A replacement portion is then welded into place in the resultant void in the blade member. The resulting weld seam is then burnished or deep rolled in order to cold work the blade member material at the weld seam. This induces compressive residual stresses in the blade member that counteract tensile residual stresses in and around the weld seam caused by the welding, and therefore strengthens the resulting repaired structure. The disclosed process particularly useful for repairing bladed disks (bladed monoblock disks) where individual blades cannot be removed for replacement or repair.

Abstract: The invention concerns a method for transverse ultrasound peening of blades (2) on a rotor which consists in driving in rotation the wheel (3) bearing the blades (2) about its geometrical axis (6) arranged substantially vertically and in causing the blades (2) to pass through a mist of microbeads produced by a vibrating surface (20) in an active chamber (12) arranged laterally relative to the wheel. The active surface (20) is located beneath the path of the blades (2). Preferably, the active chamber (12) comprises a second vibrating surface above the path of the blades (2). The invention also concerns a machine for implementing said method.

Abstract: The reactive element is introduced to the surface of the metal substrate in the form of an oxide powder and the aluminide-type coating is then formed.

Abstract: The invention concerns a method for transverse ultrasound peening of blades (2) on a rotor which consists in driving in rotation the wheel (3) bearing the blades (2) about its geometrical axis (6) arranged substantially vertically and in causing the blades (2) to pass through a mist of microbeads produced by a vibrating surface (20) in an active chamber (12) arranged laterally relative to the wheel. The active surface (20) is located beneath the path of the blades (2). Preferably, the active chamber (12) comprises a second vibrating surface above the path of the blades (2). The invention also concerns a machine for implementing said method.

Abstract: The reactive element is introduced to the surface of the metal substrate in the form of an oxide powder and the aluminide-type coating is then formed.