Groove-Turn & Parting Inserts Wear Problems and Solutions

GROOVE-TURN INSERTS
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Type of Wear
    • ×
      Flank Wear
      Flank 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 Wear
      Crater 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 Deformation
      Plastic Deformation
      Cause
      • Cutting temperature is too high

      Remedy
      • Reduce cutting speed
      • Reduce feed rate
      • Use harder grade
      • Increase coolant pressure
    • ×
      Notch Wear
      Notch 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 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 grade
      • Use stronger edge geometry
      • Turn off coolant supply when machining interrupted cuts
    • ×
      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
      • 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 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 the cutting speed
      • Use an indexable insert with a sharper cutting edge
      • Increase the coolant pressure
    • ×
      Flank Wear
      Flank 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 Wear
      Crater 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 Deformation
      Plastic Deformation
      Cause
      • Cutting temperature is too high

      Remedy
      • Use harder grade
      • Reduce feed rate
      • Reduce cutting speed
      • Increase coolant pressure
    • ×
      Notch Wear
      Notch 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 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 grade
      • Use stronger edge geometry
      • Turn off coolant supply when machining interrupted cuts
    • ×
      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
      • 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 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 the cutting speed
      • Use an insert with a positive cutting rake
      • Increase the coolant pressure
    • ×
      Flank Wear
      Flank 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 Wear
      Crater 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 Deformation
      Plastic Deformation
      Cause
      • Cutting temperature is too high

      Remedy
      • Use harder grade
      • Reduce feed rate
      • Reduce cutting speed
      • Increase coolant pressure
    • ×
      Notch Wear
      Notch 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 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 grade
      • Use stronger edge geometry
      • Turn off coolant supply when machining interrupted cuts
    • ×
      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
      • 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 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 the cutting speed
      • Use an insert with a positive cutting rake
      • Increase the coolant pressure
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