Wear Mechanism of Coated Cemented Carbide Tool in Cutting of Super Heat Resisting Alloy Inconel 718

Abstract

In continuous cutting, adhesive is formed on the tool rake face and cutting is continued while taking the form of adhesive as protective layers. At the beginning of cutting, both adhesive wear and, abrasive wear of coating film on flank progress.On the other hand, in interrupted cutting, when the tool parts from the work the adhesive formed on rake face and coating film flake at the same time. With these repetition tool wear progresses. Flaking can be restrained by reducing undeformed-chip thickness at the end of cutting.