Kyocera - Основной каталог 2010-2011 ENG
для заказа - kyocera@kyocera-tools.ru
Case Studies
25CrMo4 (SCM420) (60HRC) 25CrMo4 (SCM420) (58HRC)
Gear Parts Gear Parts C
Vc=90m/min 120 Vc=170m/min 110
ap=0.5mm 120 ap=0.3mm
f=0.12mm/rev f=0.2mm/rev CBN
Wet Dry Wet Dry
CNGA120412S01225ME CNGA120412S01215MEW
(KBN25M) (KBN25M)
KBN25M 70pcs/edge KBN25M 250pcs/edge (Stable)
Compe.B (CBN tool) 30pcs/edge (Unstable) Compe.C (CBN tool) Many times
250pcs/edge (Unstable)
for correction
KBN25M improved tool life up to 70 pieces/edge that is two times more than competitor B Competitor C (CBN tool) required many dimensional corrections in order to accomplish
250 pieces/edge, and its tool life was not stable. KBN25M (with wiper edge) exhibited good
(CBN tool). Also, KBN25M has increased its tool life up to 250 pieces/edge by changing wear resistance and the edge condition is capable of further extension of tool life.
from wet machining to dry machining. Evaluation by the user
Evaluation by the user
25CrMo4 (SCM420) (61~65HRC) 25CrMo4 (SCM420) (over 60HRC)
Ring Gear 10 Gear Shaft
Vc=170m/min Vc=140m/min
ap=0.15mm ap=0.3mm 35
f=0.21mm/rev f=0.14mm/rev 25
Wet Dry
SNGA120412 CNGA120408S01215MEW
(KBN25M) (KBN10M)
KBN25M Over 400pcs/edge KBN10M Over 300pcs/edge
Conve. D 200pcs/edge Conve. G 100pcs/edge
KBN25M has a better wear resistance, and it could extend its tool life two times more than KBN10M (with wiper edge) has good relief wear and exhibits stable surface roughness; in
conventional D. (Tool life is determined by the surface roughness.) addition, tool life improved three times more than before.
Evaluation by the user Evaluation by the user
Recommended Cutting Conditions
Cutting Conditions
Workpiece Hardness Application Recommended Cutting ap f
Materials Over 55HRC Insert Grade Speed Vc (mm) (mm/rev)
(m/min)
Hard Materials
Finishing Continuous - KBN10M 200 0.3 0.08
Light Interruption KBN25M
KBN900
High Efcient Stable Continuous - Interruption 150 0.3 0.08
Cutting
Heavy Cutting Continuous - Interruption 80 Under 2.0 0.2
Finishing Continuous PT600M 80 0.5 0.2
Under 55HRC
Gray Cast Iron Under 250HB Finishing Continuous - KBN60M 700 0.2 0.1
Light Interruption KBN900 1200 0.5 0.3
Roll Materials High Efcient Stable KBN900 700 2.0 0.4
(Chilled Cast Cutting Continuous - KBN25M 120 0.3 0.1
Light Interruption KBN900 Under 2.0 0.3
Iron) 80
Heavy Cutting Continuous - Interruption KBN65M
Sintered steel KBN70M
Finishing Continuous - Interruption
Over 55HRC Heavy Cutting Continuous - Interruption
Under 35HRC Finishing Continuous - 200 0.3 0.1
Over 35HRC Finishing Light Interruption 250 0.3 0.15
Continuous - Interruption
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