Positive M Class Chipbreakers for Low-carbon and General Steel Turning EFB / ELB
P Steel
· The EFB for finishing and the ELB for light cutting have been added to the chipbreaker series for low carbon and general steel machining in addition to the existing ELU for finishing and ESU for light cutting. · The EFB and ELB chipbreakers improve chip control in finishing of low carbon and general steel.
Application Range
.12
ESU
.08
ELB
B
.04
EFB
ELU
0
.004
.008
.012
Feed Rate f (IPR)
EFB Breaker for Finishing
ELB Breaker for Light Cutting
Strengthened edge reduces unexpected breakage
Ridge reduces edge breakage
C
High rake breaker wall improves chip breaking performance
Special breaker ridge shape achieves stable chip control
D
.030”
.020”
Variable rake angle in nose radius increases chip strain and improves chip breaking performance
15°
20°
R
Cross Section of Chipbreaker
Cross Section of Chipbreaker
Performance
Performance
S
Chip Control
Chip Control (1)
Part Material: Pipe material (A36) ø1.18” Internal Diameter Machining Insert: TPMT221EFB-T1500A Cutting Conditions: v c = 328 SFM, f = .0047 IPR, a p = .0039” Wet
Part Material: Pipe material (A36) ø1.18” Internal Diameter Machining Insert: TPMT221ELB-T1500A Cutting Conditions: v c = 656 SFM, f = .0059 IPR, a p = .0197” Wet
T
Achieves stable chip control at shallow depths of cut and low feeds
Achieves stable chip control in light cutting
V
50mm
50mm
W
EFB Chipbreaker (T1500A)
Competitor's Product
Competitor's Product
ELB Chipbreaker (T1500A)
Comparison of Surface Roughness of Finished Surfaces
Chip Control (2)
Part Material: Pipe material (A36) ø3.93” Internal Diameter Machining Insert: TPMT221EFB-T1500A Cutting Conditions: v c = 656 SFM, f = .0028 IPR, a p = .0039” Wet
Part Material: Hub (1045 Steel) Insert: VBMT332ELB-T1500A Cutting Conditions: v c =787 SFM, f =0.010 to .011 IPR, a
p =.0236”, Wet
ELB Chipbreaker (T1500A)
3.93”
Competitor's Product
100μm
100μm
Doubles the tool life by improving chip control and reducing blemishes on machined surfaces
3.93”
EFB Chipbreaker (T1500A)
Competitor's Product
B17
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