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PCBN tool problems


Common problems encountered in the use of PCBN tools are:

Excessive flank wear
Excessive crater wear
Notching
Edge chipping
Rake face flaking
Edge fracture / breakage

Excessive flank wear

Excessive flank wear

The following actions can minimise excessive flank wear:

  1. increase cutting speed
  2. check the ferrite content is within the prescribed limits (cast iron)
Over exposure
Excessive crater wear

Excessive crater wear

The following actions can minimise excessive crater wear:

  1. reduce cutting speed
  2. reduce feed rate
Heavy diamond damage
Notching

Notching

The following actions can minimise notching:

  1. reduce feed rate
  2. increase cutting speed
  3. reduce approach angle
Glazing
Edge chipping

Edge chipping

The following actions can minimise edge chipping:

  1. use chamfered cutting edges
  2. reduce cutting speed
  3. improve system rigidity
Polishing
Rake face flaking

Rake face flaking

The following actions can minimise rake face flaking:

  1. increase cutting speed
  2. reduce feed rate
  3. use chamfered and honed cutting edges
Pull out
Edge fracture / breakage

Edge fracture / breakage

The following actions can minimise edge fracture / breakage:

  1. reduce depth of cut
  2. reduce cutting speed
  3. increase edge radius
  4. use chamfered and honed cutting edges
Pull out

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+852 2882 1163
+852 2882 9168
info@synergymaterial.com