Page 713 - Master Catalog 2017, Inch

Technical Information
Failure and Solution Guide

possible solution

increase SFM reduce SFM increase chip load decrease chip load where failure occurs use tougher carbide grade use harder carbide grade apply coolant use coated carbide use topping insert change infeed angle check for insert movement and reseat reduce tool overhang reselect shim apply chipbreaker style reduce DOC adjust center height begin cutting threads .472" before workpiece change infeed method
problem

chatter

bur on crest

short tool life

chipped leading edge

chipped trailing edge

broken nose
(fi rst pass)

broken nose
(after fi rst pass)

built-up on cutting edge

premature topping

splitting threads

poor chip evacuation

widia.com F87

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