Experimental Investigation of Strengthening and Polishing Aeroengine Blades
The three-dimensional vibratory strengthening and polishing technology was used to strengthen and polish aeroengine blades with complicated surfaces. At first, the principle of the strengthening and polishing process was introduced, which combined strengthening process with polishing process. Then, the technological parameters influenced on the surface quality were investigated. The principal variables were the media hardness, the frequency and amplitude of the vibration, and duration of the vibratory strengthening and polishing. The optimum parameters were obtained. Experimental results revealed that, after strengthening and polishing, the surface roughness of aeroengine blades was reduced from Ra0.35-0.5μm to Ra0.1-0.12μm, and fatigue strength was increased by approximately 50%.
Di Zheng, Yiqiang Wang, Yi-Min Deng, Aibing Yu and Weihua Li
G. Y. Zeng and D. F. Zhao, "Experimental Investigation of Strengthening and Polishing Aeroengine Blades", Applied Mechanics and Materials, Vols. 101-102, pp. 909-912, 2012