Laser Melting Deposition Repair for Compressor Blades:Robotic Path Automatic Planning and Experimental Research
This paper studies a laser melting deposition path generation strategy based on industrial robots to address the repair problem of aero-engine TC17 high-pressure compressor blades after service damage.This method can analyze the blade damage area with model Boolean operations and embeds a secondary development plug-in in the RobotStudio offline programming software to generate Zigzag-axial,centerline-offset,and edge-helical scanning paths.The path simulation and deposition topography analysis show that when the scanning speed is 5 mm/s,the deposition layer thickness is 0.3 mm,and the overlap ratio is 50%,the centerline-offset scanning path can maintain the speed stable for 95.97%of time,and the speed decline of turning point is tinier.Simultaneously,the formed height after deposition is close to 0.3 mm,and the height fluctuation variance is relatively small with excellent flatness.Furthermore,simulations and experiments on rectangular flat-plate regions show that a continuous path,such as Zigzag scanning path,can dramatically reduce residual stress on the formed surface.
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