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Groove-Turn & Parting
ISO Turn
Threading
Milling
Hole making
Products Main Page
>
Insert Wear Problems and Solutions
>
ISO Turn Inserts Wear Problems and Solutions
ISO Turn Inserts Wear Problems and Solutions
ISO Turning
Type of Wear
×
Flank Wear
Flank Wear
Cause
High cutting speed
Low wear resistance carbide grade
Remedy
Use harder cutting tool material
Reduce cutting speed
Increase coolant preesure and check coolant direction
For work-hardening materials, select a smaller entry angle
Reduce the cutting speed when machining heat resistant materials
×
Crater Wear
Crater Wear
Cause
Excessive cutting temperatures and pressures on the top of the insert
Remedy
Reduce cutting speed
Use geometry with greater rake angle
Use more wear - resistant cutting tool material
Reduce feed rate
Increase coolant preesure and check coolant direction
×
Plastic Deformation
Plastic Deformation
Cause
Cutting temperature is too high
Remedy
Select more wear resistant cutting material
Reduce the feed rate
Reduce the cutting speed
Reduce the cutting depth
Increase coolant pressure
×
Notch Wear
Notch Wear
Cause
High hardness of the material surface causes damage at the depth of cut line
Remedy
Vary the cutting depth
Use tool with a leading cutting edge
Select a smaller corner radius
Increase coolant pressure
Select a more wear resistant grade
For work-hardening materials, select a smaller entry angle
Reduce the cutting speed when machining heat resistant materials
×
Thermal Cracking
Thermal Cracking
Cause
Excessive variations in surface temperature, intermittent machining, or variations in coolant supply
Remedy
Reduce cutting speed
Reduce feed rate
Use tougher cutting tool material
Turn off coolant supply when machining interrupted cuts
Use more stable geometry
Select a tougher insert grade
Eliminate the use of coolant whenever possible
×
Edge Fracture
Edge Fracture
Cause
Caused by excessive insert wear before indexing the insert
The grade and geometry could be too weak for the applications
Excessive load on the insert
Built-up edge has been formed on the insert
Remedy
Use a tougher cutting tool material
Reduce the cutting speed
Use a stronger cutting edge
Check the tool stability if vibration occurs
Reduce the feed rate
Turn off coolant supply when machining interrupted cuts
Increase corner radius if possible
Reduce feed and/or depth of cut
Select a stronger or thicker insert and tougher grade
×
Built-up Edge
Built-up Edge
Cause
Cutting zone temperature is too low
Negative cutting geometry
Machining of very sticky materials such as low-carbon steel, stainless steels, and aluminum
Remedy
Increase cutting speed
Use a sharper cutting edge
Use cutting tool material with a treated (smoother) surface
Increase coolant supply
×
Chip Hammering
Chip Hammering
Cause
Chips curling into insert
Remedy
Try a different chip breaker with stronger geometry
Alter feed rate and/or cutting speed
×
Chipping
Chipping
Cause
Caused by either the cutting edge of the insert being too brittle, or a built-up edge has been formed
Remedy
Select a tougher grade
Reduce the feedrate
Select a chipformer with a stronger cutting edge
Check tool clamping stability
Increase cutting speed
Reduce feed rate at beginning of cut
Improve stability of the set-up
×
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