High-speed grinding method for directionally casting high-temperature alloy turbine working blade

The invention discloses a high-speed grinding method for a directionally-cast high-temperature alloy turbine working blade, which comprises the following steps of: grinding the directionally-cast high-temperature alloy turbine working blade by adopting a grinding wheel; in each grinding process, the grinding linear speed Vs is not less than 43 m/s, and the feeding speed Vw is not less than 1000 mm/min; the cutting depth of the first cutter is 0.5 mm, and the cutting depths of the subsequent grinding machining are gradually reduced in sequence; the grinding wheel is a single crystal corundum grinding wheel. The problems that in the prior art, a grinding method for directionally casting the high-temperature alloy turbine working blade is low in machining efficiency, and the production speed is seriously affected are solved. The single crystal corundum grinding wheel is adopted, the grinding linear speed Vs is not smaller than 43 m/s, the feeding speed Vw is not smaller than 1000 mm/min, the cutting depth of gri