Sandvik Coromant Silent tools - How to reduce vibration in metal cutting - Manual (Page 12)

Sandvik Coromant – How to reduce vibration in metal cutting 8
Insert size:
It is important to choose an insert strong enough to withstand the
cutting forces but at the same time it must suit the component and its
application. Too large a cutting depth will lead to excessive cutting forces
and too small cutting depth will lead to increased friction between the
insert and component causing component dimension problems.
Cutting force is extremely important when using long overhangs.
Practical hints:
• Do not exceed 2/3 of the cutting edge length when turning as this will
result in too high cutting forces on the cutting edge.
Carbide grade:
Generally when turning small holes with small boring bars it is bene-
ficial to use sharp inserts as this helps to cut the metal more smoothly.
Sharp inserts need suitable grades, and grades such as the GC1025 and
GC4015, have relatively thin coatings that will enhance the cutting action.
Choose a grade according to Sandvik Coromant’s CoroKey matrix.
Steel grades: 4000 series and
5000 series (Cermet inserts)
Stainless grades: 2000 series
Cast iron grades: 3000 series
All round grades: 1000 series
Geometries:
Sandvik Coromant geometries are designed and dedicated for each appli-
cation area and component materials. Choose your geometry with the
application in mind, finishing-roughing, to give the best possible chip
breaking together with good machining results.
Steel Materials
Stainless Steel
Cast Iron
Non-ferrous
Super alloys
Hardened materials