users guide Instruction Manual

Wear mechanism – Trouble shooting

Careful observations

To achieve best possible economy regarding tool life, workpiece quality and optimised cut-

ting data careful observations of the insert edge have to be made.

At low speed built-up edge (BUE) and chipping are the main problems, at high speeds plastic

deformation (PD), flank wear and crater wear are the problems.

Cause

Cutting edge temperature too •

low.

Unsuitable geometry or grade.•

Solution

Increase cutting speed and/•

or feed.

Choose a geometry with a •

sharper edge. Preferably a

PVD coated grade.

When parting to centre and in stainless material it is almost impos-

sible to avoid BUE. It is important to minimise this phenomenon by

using the solutions above.

Cause

Too hard grade.•

Too weak geometry.•

Unstable conditions.•

Too high cutting data.•

Solution

Choose a softer grade.•

Choose a geometry for higher •

feed area.

Reduce overhang. Check cen-•

tre height.

Reduce cutting data.•

Chipping/breakage

Built-up edge (BUE)