TECHKNOW

Resize
Dock/Undock
NEW FAQ ADDED
X
Our website uses cookies and other technologies to ensure you get the best browsing experience.

You can change your cookie settings at any time.

Find out more on how we use cookies.

Thread Turning Inserts Wear Problems and Solutions

Thread Turning


Type of Wear
    • ×
      Plastic Deformation
      Plastic Deformation
      Cause
      • Excessive heat in cutting zone
      • Wrong Grade
      • Inadequate coolant supply
      • Depth of cut too large
      • Cutting speed too high
      • Nose radius too small

      Remedy
      • Reduce RPM/reduce depth of cut/check turned dia.
      • Use coated grade/use harder grade
      • Apply coolant
      • Reduce depth of cut /increase no. of passes
      • Reduce cutting speed
      • If possible use insert with larger radius
    • ×
      Premature Wear
      Premature Wear
      Cause
      • Cutting speed too high
      • Infeed depth too small
      • Highly abrasive material
      • Inadequate coolant supply
      • Wrong inclination anvil
      • Wrong turned dia. prior to threading
      • Insert is above center line

      Remedy
      • Reduce RPM
      • Modify flank infeed /increase depth of cut
      • Use coated grade
      • Apply coolant
      • Reselect anvil
      • Check turned dia.
      • Check center height
    • ×
      Insert breakage
      Insert Breakage
      Cause
      • Wrong turned dia. prior to threading
      • Wrong Grade
      • Poor chip control
      • Incorrect center height

      Remedy
      • Check turned dia.
      • Use tougher grade
      • Change to M/B type inserts and use modified flank infeed
      • Check center height
    • ×
      Built-up Edge
      Built-up Edge
      Cause
      • Cutting edge too cold
      • Wrong grade
      • Inadequate coolant supply
      • Incorrect cutting speed

      Remedy
      • Increase RPM /increase depth of cut
      • Use coated grade
      • Apply coolant
      • Change cutting speed
    • ×
      Vibration
      Vibration
      Cause
      • Incorrect workpiece clamping
      • Incorrect tool setup
      • Incorrect cutting speed
      • Incorrect center height

      Remedy
      • Use soft jaws
      • Check tool overhang / use anti vibration bars
      • Increase cutting speed
      • Check center height
    • ×
      Poor Surface Finish
      Poor Surface Finish
      Cause
      • Wrong cutting speed
      • Excessive heat in cutting zone
      • Poor chip control
      • Inadequate coolant supply
      • Wrong inclination anvil
      • Tool overhang too long
      • Incorrect center height

      Remedy
      • Increase/reduce RPM
      • Reduce depth of cut
      • Modify flank infeed
      • Apply coolant
      • Reselect anvil
      • Reduce tool overhang
      • Check center height
    • ×
      Poor Chip Control
      Poor Chip Control
      Cause
      • Excessive heat in cutting zone
      • Wrong grade
      • Inadequate coolant supply
      • Wrong turned dia. prior to threading
      • Incorrect method of infeed

      Remedy
      • Reduce RPM /change depth of cut /check turned dia.
      • Use coated grade /check turned dia./use M/B type inserts
      • Apply coolant
      • Check turned dia.
      • Modified flank infeed 3-5°
    • ×
      Thread Profile is Too Shallow
      Thread Profile is Too Shallow
      Cause
      • Incorrect center height
      • Worn insert
      • Insert isn’t machining the tread crest
      • Excessive wear

      Remedy
      • Check center height
      • Change to new cutting edge sooner
      • Check the workpiece dia.
      • Increase radial infeed
    • ×
      Broken Nose During First Pass
      Broken Nose During First Pass
      Cause
      • Cutting edge too cold
      • Depth of cut too large
      • Wrong grade
      • Wrong turned dia. prior to threading
      • Incorrect center height
      • Infeed depth too shallow
      • Wrong inclination anvil
      • Tool overhang tool long

      Remedy
      • Increase RPM
      • Reduce depth of cut/increase number of infeed passes
      • Use tougher grade
      • Check turned dia.
      • Adjust center height
      • Modify flank infeed
      • Reselect anvil
      • Reduce tool overhang
    • ×
      Incorrect Thread Profile
      Incorrect Thread Profile
      Cause
      • Unsuitable thread profile
      • Incorrect center height
      • Incorrect pitch in the program

      Remedy
      • Adjust to correct tool ,anvil and insert
      • Adjust center height
      • Change the program
Terms of Use and Legal Disclaimer    Privacy Statement
© ISCAR LTD. Manufacturer of Metalworking Tools (Iscar.com) All Rights Reserved