Turbine Blade

Difficult-to-cut materials

Turbine blades are exposed to extreme thermal and physical loads: A turbine blade at full load can reach speeds of up to 500 m/s. This corresponds to a centripetal acceleration of 160,000 m/s2 with centrifugal forces of around 550 tonnes.

Only difficult-to-cut materials such as Inconel or similar high-temperature alloys are capable of withstanding such forces. Complex blade profiles are an additional challenge. Our consistent tool solutions ensure that your tool change and chip-to-chip times can be reduced to a minimum while still maintaining extremely high quality

Roughing the blade root, turbine blade and blade head

Solution:
F2334R round insert milling cutter

► Optimised insert seat design
► Reinforced tool adaptor
► Direct coolant supply to the cutting edge
► Four cutting edges per indexable insert
► Insert sizes: RO.X 10T3.. or RO.X.1204..

Finishing the turbine blade

Solution:
Prototyp Protostar N50 multi-flute

► Modular milling system thanks to the ConeFit adaptor
► 50° helix angle for a soft cutting action
► TAX coating for high feed rates and cutting speeds

Semi-finishing and finishing of thin-walled, forged blades

Solution:
Walter BLAXX F5041/5141

► Tangential indexable inserts with four cutting edges at a 90° angle
► Special surface treatment of the body for a high level of wear resistance
► Real high-performance cutting (HPC) for blade machining
► Semi-finish machining with large depths of cut (up to 9 mm) while also ensuring high feed rates
► Powered by Tiger·tec® Silver

Finishing the transition radius and platform

Solution:
Walter Prototyp conical ball-nose copy milling cutters

► Variable inclination angle: From 1° up to max. 30°
► Two to four teeth – with or without chip breaker/knurled profile
► Radius of 0.5–8 mm
► Substrate, geometry, pre-treatment and coating are ideally matched to the application and material
► Reduced delivery time with Walter Xpress