Year: 2023
Type: conference-paper
Abstract: The effects of physical and chemical interaction between a tool equipped with a superhard composite based on cubic boron nitride (SBNB) and the components of the material being processed and air oxygen were studied using the results of the study of model thermal activation and real thermal triboactivation of the tool contact areas in the cutting zone. It is shown that, depending on the thermobaric load, chemical interaction between the elements of the contacting materials and air oxygen is realized at the working areas of the tool: – the tool material is oxidized by air oxygen to form boric anhydride; – the metals that make up the processed material interact with boron nitride to form borides of the MeхB type; – the effect of contact-reactive melting is realized on the contact surfaces of the tool with the formation and melting of eutectics of the Me-MeхB type. The performance of a cutting tool equipped with a composite based on cubic boron nitride is limited by the chemical interaction of the tool material with the material being processed and air oxygen in the cutting zone. The cutting temperature corresponding to the formation of a liquid phase from the products of interaction on the working areas of the tool is an attractor for increasing the cutting speed.
Author: Sergiy Klymenko
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4389950335