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TP710/720
A generation of CVD grades for steel turning
Chipbreaker
Chipbreaker
Chipbreaker Features Application Cutting Edge
PF

First choice chipbreaker for finishing steels. The dimple structure decreases the contact area between the insert surface and chips.resulting in significant reduction of heat occurrence.

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PM

General purpose chipbreaker used for medium cutting.

Unique chipbreaker geometry with sharp edges and large rake angle assures free cutting action in a wide range of cutting conditions.

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PR

For rough machining of carbon steel, cast steel and alloy steel.

The combination of variable rake angle and variable edge width meets the sharpness and strength requirements of different depths of cut.

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PH

For heavy cutting of carbon steel,cast steel and alloy steel.

Variable edge and stepped chipbreaker for low cutting resistance.

Straight cutting edge and chamfer making the cutting sharpness and cutting edge strength is guaranteed at the same time.

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PS

3-dimensional chipbreaker designed to have excellent chip control capanbility and low cutting force in finishing to medium cutting. Low cost,M-class positive insert used for high efficiency in a wide range of applications.

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Standard cutting conditions
Standard cutting conditions

Negative inserts

 

ISO Operation Chipbreaker Grade ap(mm) f(mm/rev) Vc(m/min)
P Finishing PF TP710 0.5-2.0 0.08-0.45 150-360
TP720 120-280
Medium cutting PM TP710 1.0-4.0 0.15-0.40 150-360
TP720 120-280
Heavy cutting PR TP710 2.0-6.5 0.25-0.60 150-360
TP720 120-280
PH TP710 3.0-12.0 0.30-1.00 150-360
TP720 120-280

 

Positive inserts

 

ISO Operation Chipbreaker Grade ap(mm) f(mm/rev) Vc(m/min)
P Finishing to
Medium cutting
PS TP710 0.5-2.5 0.1-0.3 150-360
TP720 120-280
Heavy cutting HR TP710 2.0-5.0 0.6-1.2 100-300

 

Practical examples

Workingpiece Type

Bolt

Work Material

SCM415

Inserts

CNMG120408-PF

Grade

TP710

Cutting Conditions

VC=150(m/min)

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f=0.1(mm/rev)

ap=0.5(mm)

Cooling From: Wet

Workingpiece Type

Flange

Work Material

45#

Inserts

CNMG120408-PM

Grade

TP720

Cutting Conditions

VC=220(m/min)

f=0.2(mm/rev)

ap=3(mm)

Cooling From: Wet