INVESTIGATION OF CONTACT STRESSES
AND THEIR INFLUENCE ON THE PHYSICS
OF CUTTING OF 45 STEEL BY CUTTING
TOOLS OF HIGH-SPEED ALLOYS

A. I. Sagradyan

UDC 621.91.762

The influence of shear stresses on the physical processes 
proceeding on the surface of contact of a cutting tool with a chip 
removed has been investigated. The mechanisms of appearance of contact 
layers and the dependence of the lengths of the elastic and plastic 
parts of these layers on the normal and shear stresses in the contact 
zone have been considered. It was established that a natural "white" 
layer formed in the process of cutting plays a protective role and, 
as a consequence, decreases the rate of wear of the tool.

State Engineering University of Armeniya, 105 Ter'yan 
Str., Erevan, 375009, Armeniya. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 78, No. 6, pp. 184-187, November-December, 2005. 
Original article submitted May 19, 2005.