ICTM Collaborative R&D 2024

Manufacturing of Ni-or Ti-Blisks with (semi-) finishing strategies

© Fraunhofer IPT

Which semi finishing strategy (milling) is best suited regarding roughing and finishing?

Challenge and Motivation

  • Selection of an economical semi-finishing strategy is highly influenced by the blade geometry of the blisk, the number of blocks as well as the the finishing and semi-finishing offset.
  • Due to high cutting force (Ni-based) and low Young's modulus (Ti-based), distortion of workpiece occurs.


  • Economical and technological evaluation of different semi finishing strategies with focus on
    • tool concepts (barrel tool vs. ball end mill) and
    • process design (off-set and depth of cut)