Steam turbine, gas turbine and aircraft engine are widely used in energy transportation and defense field, the blade is one of the key components of these energy sources and power device. Blades work under the high temperature and high pressure conditions in a long period, and withstand the alternating stress of centrifugal force, water or steam.Blades are made of high hardness and high strength material to ensure the reliability and working life, which can result in the difficulty of processing.
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