Process Description
Features applied to gas turbine airfoils are airfoil film cooling holes, internal cooling holes, seals slots, tip cavities, root notches, tip closures and coatings. Sulzer Metco can also deliver engine ready parts as a ‘one-stop-shop’ supplier with responsibility for casting, conventional machining, non-conventional machining and coating.

The range of products for blades and vanes are:
• Internal cooling passages, cylindrical / turbulated holes
• Airfoil film cooling holes, cylindrical holes / fan-shaped holes
• Pin sleeves
• Tip closures
• Serpentine closures
• Coatings
• Supply of engine ready parts

Features of Turbine Air Foils
Manufacturing Processes:

• Non-conventional machining processes:
  • Laser drilling (LASER)
  • Electro chemical drilling (ECD)
  • Electro chemical machining (ECM)
  • Electro discharge machining (EDM)
  • High speed, 5-axis EDM
• Conventional machining processes:
  • Creep feed grinding
• Special processes:
  • High temperature vacuum brazing
  • Vacuum heat treatment
• Coating processes (through Sulzer Metco Coatings GmbH and Sulzer Metco AG):
  • CVD (Aluminizing)
  • APS
  • LVPS
  • HVOF
  • EB-PVD