Page 244 - ISCAR(TURNING-CATALOG-42-2022)

USER GUIDE
ISOTURN INSERTS Edge Preparation and Recommended Applications Silicon Nitride for Cast Iron and

T-Land Sizes for Standard Items
High Temperature Alloys
Grade
T (mm)
a°
IN22
What is ISCANITE?
25°
0.20
ISCANITE is a cutting tool material containing over
IN23
25°
0.20
90 percent silicon nitride. ISCANITE is produced by
25°
0.20
IS80
unique hot pressing methods to achieve full density,
IS8
thermal-shock resistance. These characteristics make
IS9
0.10
25°
ISCANITE an ideal cutting tool material with impact
20°
IN11
0.20
resistance near that of coated carbides, and the heat
0.14
IB50 0.20 25° and provides superior toughness along with high
20°
and wear resistance of aluminum-oxide ceramics.
IB55 0.14 20°
IB85 0.14 20° Which material can ISCANITE machine?
ISCANITE is primarily used on cast iron and high
IB90 0.14 20° temperature alloys, brass and composites. Steel
IS6 0.20 25° is the only material usually avoided because
IW7 0.10 25° of various chemical incompatibilities.
IN420 0.2 25° ISCANITE Benefits
sharp For finishing and ISCANITE will increase your productivity, reduce
super finishing your machining costs and can drastically reduce
tool forces. ISCANITE increases productivity through
F additional metal removal rates and can fully utilize the
machine’s potential. Machining costs are reduced
with increased tool life, along with less downtime
for indexing, gauging, and adjustments.
r0.03-0.04 For semi-finishing and Cutting Speed and Cutting Force
finishing f < 0.2 mm/rev
It is preferable to machine at higher cutting speeds and
E lower cutting forces (Point A is preferred over Point B.)
In this case, pressure is reduced on the workpiece and
any tendency of the workpiece to move or vibrate. If the
available machine power is higher, or the machine can
T For semi-roughing and be stepped up, the use higher cutting speeds
roughing f > 0.2 mm/rev of 750 m/min is possible, with the same cutting
α° force as at Point B. (See Point C.) The positive
T influence of the cutting speed and feed on machining
conditions: higher cutting speeds are recommended
and possible for silicon nitride inserts.
fc
T For heavy roughing and (N)
interrupted cutting 6000
α° r0.03-0.04
S
5000
4000
Cutting Force 3000 B C 75kW
2000 37kW
18.75kW
7.5kW
1000
A
Vc
0 150 300 450 600 750 900 1050 1200 1350 1500 (m/min)
Cutting Speed

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