Simulation of Physical and Mechanical Properties to Increase the Strength of the Cutting Ceramics

Alexey A Moskvitin,Akop S Abelyan,Lyubov A Gorovenko,Olga A Sumskaya,Evgenia V Kovriga

doi:10.14419/ijet.v7i4.38.27760

Abstract

According to studies [1], cutting tools with plates made of cutting ceramics alloyed with carbide-forming elements have higher heat resistance than standard plates made of cutting ceramics in the delivery stage, since their properties do not meet the requirements. Cutting ceramics with the addition of a nickel alloying element to its main standard fraction has a low heat resistance. With the addition of the manganese alloying element, heat resistance and corrosion resistance and wear resistance of cutting tools equipped with cutting ceramics are reduced. The main alloying element is chromium, which, depending on its quantity, indicates increased or high heat resistance in cutting ceramics.

Highlights

The base of the cutting ceramics alloy should contain chromium and nickel or manganese
In case of dislocation creep, diffusion helps to weaken the action of factors that impede dislocation movement: it facilitates the movement of clouds, coagulation and dissolution of independent phases, which in turn facilitates the passage between particles and the creeping through them; prerequisites are created for the diffusion of dislocations
If we proceed from the fact that the time dependence of strength should be quantitatively determined approximately by homological temperature, the room temperature is relatively low for cutting ceramics, a noticeable time dependence of strength is observed here only at elevated and high temperatures during cutting (Figure 1)

Summary

Introduction

The base of the cutting ceramics alloy should contain chromium and nickel or manganese. At temperatures above 700 ° C, at low applied stresses when cutting hard-to-machine steels 12H18N10T, 14H17N2 and a very long duration of their action, deformation of a purely diffusion type occurs due to the viscous flow of cutting ceramic plates.

Results

Conclusion