Page 23 - Iscar Article 2_2017

In addition, titanium’s modulus of elasticity contributes
to vibration during cutting and, as a result, surface
finish and accuracy problems can be encountered
(This is less of a problem when machining steel).

Cutting tool producers continue to place a greater
emphasis on developing progressive tools for the
efficient machining of titanium. Manufacturing titanium
parts is a process with significant buy-to-fly ratio,
when a large amount of metal needs to be removed.
The eventual weight of a finished titanium part may
be only 10%, or less of the original weight of a
workpiece. Frequently, these parts will have cavities,
pockets and ribs that dictate milling as the main
method for manufacturing. As a consequence, every
new tool that is intended for the milling of titanium
creates intense interest amongst the global technical
community. The latest products from ISCAR, an
acknowledged innovator in the field, always attract
the attention of the world’s manufacturers involved in
machining titanium.

Tool material is of fundamental importance in the
success of cutting tools, especially for use with
indexable milling difficult-to-cut aerospace materials,
in particular titanium. Within this challenging field,
ISCAR has developed a new carbide grade IC840.
The word “new” relates to all grade elements: IC840 is
characterized by a newly cemented carbide substrate
and an innovative hard PVD coating.
The grade substrate is highly resistant to thermal
cracks; the bronze-color, “chocolate”, coating boasts
high oxidation and chipping resistance whilst
an advanced post-coating treatment improves
overall toughness. The advantageous
combination of IC840 provides users with
great opportunities in milling titanium.
ISCAR believes that the new
“chocolate” will definitely suit the
taste of the manufacturer of
titanium components and
increase the performance
of indexable cutters.

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