Groove-Turn & Parting Inserts Wear Problems and Solutions
Type of Wear
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Flank WearFlank Wear
Cause- High cutting speed
- Low wear resistance carbide grade
Remedy- Reduce cutting speed
- Use harder grade
- Increase coolant pressure
- Adjust center height position
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Crater WearCrater Wear
Cause- Excessive cutting temperatures and pressures on the top of the insert.
Remedy- Reduce cutting speed
- Reduce feed rate
- Use harder grade
- Increase coolant pressure
- Use an insert with a positive cutting rake
-
Plastic DeformationPlastic Deformation
Cause- Cutting temperature is too high
Remedy- Reduce cutting speed
- Reduce feed rate
- Use harder grade
- Increase coolant pressure
-
Notch WearNotch Wear
Cause- Cutting speed too high, or insufficient insert wear resistance of the carbide grade
Remedy- Reduce the cutting speed
- Reduce the feed rate
- Use harder grade
- Vary the cutting depth
- Increase coolant pressure
-
Thermal CrackingThermal Cracking
Cause- Excessive variations in surface temperature, intermittent machining, or variations in coolant supply
Remedy- Reduce cutting speed
- Reduce feed rate
- Use tougher grade
- Use stronger edge geometry
- Turn off coolant supply when machining interrupted cuts
-
Edge FractureEdge 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- Reduce the cutting speed
- Use tougher grade
- Reduce the feed rate
- Use more stable tool holder
- Use reinforced cutting edge negative cutting rake
- Use screw clamping instead of self clamping
- Adjust center height position
- Reduce tool extension
-
Built-up EdgeBuilt-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 the cutting speed
- Use an indexable insert with a sharper cutting edge
- Increase the coolant pressure
-
-
-
Flank WearFlank Wear
Cause- High cutting speed
- Low wear resistance carbide grade
Remedy- Reduce cutting speed
- Use harder grade
- Increase coolant pressure
- Adjust center height position
-
Crater WearCrater Wear
Cause- Excessive cutting temperatures and pressures on the top of the insert.
Remedy- Use harder grade
- Reduce cutting speed
- Increase coolant pressure
- Use an insert with a positive cutting rake
-
Plastic DeformationPlastic Deformation
Cause- Cutting temperature is too high
Remedy- Use harder grade
- Reduce feed rate
- Reduce cutting speed
- Increase coolant pressure
-
Notch WearNotch Wear
Cause- Cutting speed too high, or insufficient insert wear resistance of the carbide grade
Remedy- Reduce the cutting speed
- Use harder grade
- Use reinforced cutting edge negative cutting rake
- Adjust center height position
- Increase the coolant pressure
-
Thermal CrackingThermal Cracking
Cause- Excessive variations in surface temperature, intermittent machining, or variations in coolant supply
Remedy- Reduce cutting speed
- Reduce feed rate
- Use tougher grade
- Use stronger edge geometry
- Turn off coolant supply when machining interrupted cuts
-
Edge FractureEdge 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- Reduce the cutting speed
- Use tougher grade
- Reduce feed rate
- Reduce tool extension
- Use more stable tool holder
- Use reinforced cutting edge negative cutting rake
- Use screw clamping instead of self clamping
- Check center height position
- Use screw clamping instead of self- clamping
-
Built-up EdgeBuilt-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 the cutting speed
- Use an insert with a positive cutting rake
- Increase the coolant pressure
-
-
-
Flank WearFlank Wear
Cause- High cutting speed
- Low wear resistance carbide grade
Remedy- Reduce cutting speed
- Use harder grade
- Increase coolant pressure
- Adjust center height position
-
Crater WearCrater Wear
Cause- Excessive cutting temperatures and pressures on the top of the insert.
Remedy- Use harder grade
- Reduce cutting speed
- Increase coolant pressure
- Use an insert with a positive cutting rake
-
Plastic DeformationPlastic Deformation
Cause- Cutting temperature is too high
Remedy- Use harder grade
- Reduce feed rate
- Reduce cutting speed
- Increase coolant pressure
-
Notch WearNotch Wear
Cause- Cutting speed too high, or insufficient insert wear resistance of the carbide grade
Remedy- Reduce the cutting speed
- Use harder grade
- Use reinforced cutting edge negative cutting rake
- Adjust center height position
- Increase the coolant pressure
-
Thermal CrackingThermal Cracking
Cause- Excessive variations in surface temperature, intermittent machining, or variations in coolant supply
Remedy- Reduce cutting speed
- Reduce feed rate
- Use tougher grade
- Use stronger edge geometry
- Turn off coolant supply when machining interrupted cuts
-
Edge FractureEdge 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- Reduce cutting speed
- Use tougher grade
- Reduce feed rate
- Reduce tool extension
- Use more stable tool holder
- Use reinforced cutting edge negative cutting rake
- Check center height
- Use screw clamping instead of self- clamping
-
Built-up EdgeBuilt-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 the cutting speed
- Use an insert with a positive cutting rake
- Increase the coolant pressure
-