Abstract
Is milling of titanium alloys turbine blades possible with PCD (polycrystalline diamond) cutter and what surface roughness can be expected? In order to answer the question a basic consideration of diamond tools machining titanium alloys, chip formation and experimental results in milling of titanium alloy TiA16V4 turbine blades are presented. The milling results of a “slim” turbine blade prove that milling with PCD cutter is possible. The tool wear could not be registered after more than 100 minutes of milling. The minimum surface roughness of the machined blade was R a = 0.89 μm. Better results are obtained when wet milling has been performed. Therefore, finishing milling of titanium alloy TiAl6V4 turbine blades with PCD cutter is promising.Key WordsDiamond MachiningTitanium AlloysMilling Blades PCDGas Turbine
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