Global Product Catalogue v26.1 - Catalog - Page 192
Drilling Operations
Coolant Recommendations
◾ Coolant works to mobilize chips away from the
cut zone, reduce the heat created during the
cutting process and minimize friction.
RECOMMENDED COOLANT PRESSURE
BY DIAMETER – psi
1600
◾ 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 (psi)
1400
◾ It is important to optimize the coolant pressure
and position in order to gain the full benefits
coolant offers the cutting process.
1000
800
600
400
200
0
◾ 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.”
3
4
6
8
10
12
DRILL DIAMETER (mm)
14
16
18
16
18
RECOMMENDED COOLANT PRESSURE
BY DIAMETER – bar
120
100
PRESSURE (bar)
◾ 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.
1200
80
60
40
20
0
LARGE TIP – LOW VELOCITY
NO COVERAGE AT MAXIMUM DEPTH
3
4
6
8
10
12
DRILL DIAMETER (mm)
14
SMALL TIP – HIGH VELOCITY
COMPLETE COVERAGE
◾ 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.
192
DRILLS
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