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DRILLS
DRILLS
241
www.kyocera-sgstool.com
Drilling Operations
Coolant Recommendations
SGS COOLANT RECOMMENDATIONS
0
200
400
600
800
1000
1200
1400
1600
3
4
6
8
10
DRILL DIAMETER (mm)
RECOMMENDED COOLANT PRESSURE
BY DIAMETER – psi
PRESSURE (psi)
12
14
16
18
0
20
40
60
80
100
120
3
4
6
8
10
DRILL DIAMETER (mm)
RECOMMENDED COOLANT PRESSURE
BY DIAMETER – bar
PRESSURE (bar)
12
14
16
18
SMALL TIP – HIGH VELOCITY
COMPLETE COVERAGE
LARGE TIP – LOW VELOCITY
NO COVERAGE AT MAXIMUM DEPTH
◾
Coolant works to mobilize chips away from the
cut zone, reduce the heat created during the
cutting process and minimize friction.
◾
It is important to optimize the coolant pressure
and position in order to gain the full benefits
coolant offers the cutting process.
◾
Proper coolant application promotes greater
operating parameters, greater material removal
rates, improved surface finishes, predictable tool
life, reduced power consumption and reduced
cycle times.
◾
Pressure is important, but more importantly is
consistency of the pressure and application
onto the tool; intermittent cooling of carbide
leads to thermal stressing of the material and
the formation of “microcracks.”
◾
Proper cleanliness and filtration of coolants is
important in order for the coolant to maintain
its beneficial properties, and also to avoid a
reduction in coolant pressure or the possibility
of clogging the coolant channels in coolant
through drills.
◾
Reducing the nozzle size helps maximize the cooling benefits of the unique double margin design on the Hi-PerCarb drill by increasing
velocity. Aim the nozzles in line with the secondary flute located between the two margins as well as the flute for best results.
SGS COOLANT RECOMMENDATIONS
0
200
400
600
800
1000
1200
1400
1600
3
4
6
8
10
DRILL IAMETER (mm)
RECOMMENDED COOLANT PRESSURE
BY DIAMETER – psi
PRESSURE (psi)
12
14
16
18
0
20
40
60
80
100
120
3
4
6
8
10
DRILL IAMETER (mm)
RECOMMENDED COOLANT PRESSURE
BY DIAMETER – bar
PRESSURE (bar)
12
14
16
18
SMALL TIP – HIGH VELOCITY
COMPLETE COVERAGE
LARGE TIP – LOW VELOCITY
NO COVERAGE AT MAXIMUM DEPTH