WEAR IN CARBIDE END MILLS FOR HIGH STRENGTH MATERIALS MACRONISING

Authors

  • V. S. Ramprasad Nalamati, Dr. S. Chakradhar Goud

Abstract

Wear mechanism on the flank of a cutting tool is caused by friction between newly machined surface and the cutting tool, which plays predominant role in determining tool life. The wear on the cutting tools was occurred predominantly on the nose radius, as effect of lower feed rate and nose radius selected. Various wear studies on both coated and uncoated cutting tool such as abrasive wear, adhesive wear, adhering chip on the cutting edge, flaking chipping coating delamination of coated chamfering tool, crack and fracture. The abrasive wear predominantly occurred on the flank face while the flaking on the rake face. Abrasive wear occurred at nose radius due to the depth of cut selected was low therefore, the contact area between the cutting tool and the workpiece material was small. Adhesion or welded titanium alloy onto the flank and rake faces demonstrated a strong bond at the workpiece-tool interface.  The adhesion wear takes place after the coating has worn out or coating delamination has been occurred. The crack occurred possibly due to machining at high cutting speed and high depth of cut.

Published

2021-12-15

Issue

Section

Articles