Sandvik Coromant Parting and grooving - users guide - Manual (Page 79)

77
Cause
Excessive temperature in cut- •
ting zone.
Unsuitable grade.
•
Lack of coolant supply. •
Solution
Reduce cutting speed and/or •
feed.
Choose more wear resistant
•
grade.
Improve coolant supply.
•
Plastic deformation (PD)
Cause
Cutting speed too high. •
Too soft grade. •
Lack of coolant supply. •
Solution
Decrease cutting speed. •
Choose more wear resistant •
grade.
Improve coolant supply.
•
Flank wear
Cause
Cutting speed too high. •
Too soft grade. •
Feed too high. •
Lack of coo • lant supply.
Solution
Decrease cutting speed. •
Choose more wear resistant •
grade.
Decrease feed.
•
Improve coolant supply. •
Crater wear
Cause
Oxidation at the cutting depth. •
Too high edge temperature. •
Solution
Use varying cutting depths. •
Reduce cutting speed. •
Notch wear