Page 48 - machining_titanium_05_2019

MILLING TITANIUM

Fig. 25 Milling blisk

For optimal results of high speed trochoidal milling titanium in specific applications (milling blisk is
the most typical example), manufacturers require many tailor-made (special) tools that differ in
diameters, cutting and overall lengths, and a shank type. An excellent solution can be found with
the use of MULTI-MASTER products ensuring numerous design configurations for assembled
tools.
The MULTI-MASTER family features a rich variety of special multi-flute heads, which are
intended for trochoidal milling and are produced by request.

Flying bling
A rotor, the rotating part of a turbine, mainly comprises a shaft, a disk and blades. Traditionally, the
rotor is an assembly in which the blades are mounted in a disk. An alternative design features an
integrally bladed rotor (IBR) - a monoblock part that integrates the blades and the disk.
In comparison with the assembled structure, the alternative reduces the rotor
weight but, at the same time, makes maintenance more difficult. Depending on the
specific configuration, IBR (“bladed rotor” or simply “blotor”) may be considered as
a bladed disk (“blisk”), a bladed ring (“bling”) or even a bladed drum (“blum”).

46 ISCAR