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