2.3D Grinding Airfoil Restoration Motivation JIAO TO ONG UN ·Labourous(15-30kg Sandy belt contact force) 。Skill ·Ergonomics Contact wheel ·Fatigue Health hazard (metal dust) MT333 Materials Applications Practice Prof.XiaoQi Chen C.7 Inner 65 mm Challenges Buttress Leading Edge Severe part distortions Part-to-part variations ·3 D curvature Surface covered by repair materials Difficult-to-cut materials Trailing Edge Oufer ·Accurate finishing Buttress Braze ansition Lines Leading Cooling edge holes Cavities Trailing edge Braze material Parent material MT333 Materials Applications&Practice Prof.XiaoQi Chen C.8MT333 Materials Applications C.7 & Practice Prof. XiaoQi Chen 2. 3D Grinding Contact wheel Sandy belt • Labourous (15 – 30 kg contact force) • Skill • Ergonomics • Fatigue • Health hazard (metal dust) Airfoil Restoration - Motivation MT333 Materials Applications C.8 & Practice Prof. XiaoQi Chen Challenges 65 mm Trailing Edge Leading Edge Braze Outer Buttress Inner Buttress Transition Lines Braze material Parent material Leading edge Trailing edge Cavities Cooling holes • Severe part distortions • Part-to-part variations • 3D curvature • Surface covered by repair materials • Difficult-to-cut materials • Accurate finishing