发动机零件激光焊接修复.pptVIP

* Five Axis Laser Welding for Repair of Turbine Engine Components Outline Laser welding technology overview A History of success Applications and benefits Repair applications Potential benefits Barriers Potential projects Summary Laser Welding – A History of Success Automotive – Body-in-White, Gear box, Sensors Medical – Pacemakers, Implants, Surgical Instruments Electronics – Hybrid packages, Sensors, Transducers Military – Microwave devices, IR Sensors, Gyroscope Aerospace – Fuselage Panels, Sensors Turbine Engine Components 70 m laser welded joint Application – Repair of Turbine Engine Components Weld repair of worn blade tips, knife edge seals, rotary seals Weld new sections of blades, NGVs Weld sheet metal sections of combustors Growing Success in Aerospace Reduced weight 1 lb on the engine = 5-10 lbs on the wing structure Growing Success in Aerospace Source: Mendez, P. F., Eagar, T. W., “New Trends in Welding in the Aeronautic Industry”, 2nd Conference of New Manufacturing Trends, Bilbao, Spain, November 19-20, 2002. Application - Aircraft Fuselage Panel Stringer Welding Military jets: $2,000/lb/100,000 hours Applications and Benefits for AircraftFuselage Panel Stringer Welding Reduced weight (fuel savings) Eliminate fasteners and sealing material Modify designs to account for lower heat affected zone. Reduced costs – Welded joint made in half the time of a riveted joint. Improved reliability No rivets to corrode or fatigue No moisture traps Potential Benefits of Laser Welding for Repair Depots Flexible Applicable to a wide range of metals and alloys and to a wide range of components Sheet metal welding (+ cutting + drilling) Low distortion produces ‘near net shape’ - means minimum post-weld machining and blending operations for repaired components Readily automated – addresses growing shortage of skilled labor/welders Barriers to Laser Welding in Repair Applications Process not qualified Highly concentrated beam creates demand for good joint