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Drilling Operations
CSGoS CoSOGOlSLaACONnOTtLRAENCRTOMeREMcCEOoNMDmMATEINOmDNASTeIOnNSdations
Coolant works to mobilize chips away from the cut RECOMRMECENODMEMDECNODOELDACNOTOPLRAENSSTUPRREESSURE
BY DIAMBYETDEIARM–EpTsEi R – psi
zone, reduce the heat created during the cutting 1600 1600
process and minimize friction. 1400 1400 4 6 6 8 810 1012 1214 1416 1618 18
DRILL DDIARIMLLETDEIARM(mETmE)R (mm)
It is important to optimize the coolant pressure and1200 1200
position in order to gain the full benefits coolant PRESSURE (psi) RECOMRMECENODMEMDECNODOELDACNOTOPLRAENSSTUPRREESSURE
offers the cutting process. PRESSURE (psi)1000 1000 BY DIAMBYETDEIARM–EbTaErR – bar
800 800 4 6 6 8 810 1012 1214 1416 1618 18
DRILL DDIARIMLLETDEIARM(mETmE)R (mm)
Proper coolant application promotes greater 600 600
operating parameters, greater material removal 400 400
rates, improved surface finishes, predictable tool
200 200
life, reduced power consumption and reduced 0 30 34
cycle times. 34
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 120 120
of “microcracks.”
Proper cleanliness and filtration of coolants is 100 100
important in order for the coolant to maintain its PRESSURE (bar) 80 80
beneficial properties, and also to avoid a reduction PRESSURE (bar)
in coolant pressure or the possibility of clogging 60 60
the coolant channels in coolant through drills.
40 40
20 20
0 30
LARGE LTAIPR–GELOTIWP –VELLOOWCIVTEYLOCITY SMALLSTMIPA–LLHTIGIPH–VHELIGOHCIVTEYLOCITY
NO COVNEORACGOVEEARTAMGAEXAITMMUAMXDIMEPUTMH DEPTH COMPLCEOTEMCPOLEVTEERACGOVEERAGE
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.
194 DRILLS DRILLS
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www.sgs-tool.ru
