RESEARCH OF THE COMPOSITION INFLUENCE OF COMPOSITES CONTAINING IMPACT DIAMONDS ON THEIR PERFORMANCE CHARACTERISTICS IN BLADE PROCESSING OF NON-FERROUS METALS-Reference-Cited by-同舟云学术

RESEARCH OF THE COMPOSITION INFLUENCE OF COMPOSITES CONTAINING IMPACT DIAMONDS ON THEIR PERFORMANCE CHARACTERISTICS IN BLADE PROCESSING OF NON-FERROUS METALS

Published:2024-06 Issue:67 Volume:2 Page:69-78
ISSN:1995-0470
Container-title:Mechanics of Machines, Mechanisms and Materials
language:
Short-container-title:MMMM

Author:

,SENYUT Vladimir T.,VITYAZ Petr A., ,ZHORNIK Viktor I., ,VALKOVICH Igor V., ,AFANASYEV Valentin P., ,GRIGORIEV Igor E.,

Abstract

The paper presents the results of resistance tests of tool composite materials containing nanostructured impact diamonds, in comparison with composites based on synthetic superhard materials, diamond and cubic boron nitride (cBN), and ВК-8 (VK-8) (WC + 8 % Co) hard alloy, during blade processing of workpieces made of brass ЛС-59 (LS -59) (57–60 % Cu) and aluminum alloy AK-7 (Al 92–94 %, Si 6–8 %). Samples of composite materials for wear resistance studies were obtained by thermobaric sintering in a highpressure apparatus. The performance of composites was assessed by the wear of the cutter back surface, as well as by a specially developed method for studying the performance characteristics of composite superhard materials, based on determining their specific productivity. As a result of the tests, it is found that composites based on impact diamonds have the highest resistance when turning non-ferrous metal alloys. In particular, the wear resistance of a composite material containing impact diamonds with the addition of cBN exceeds the wear resistance of cutters made of composite 02 (belbor) by 1.5–3 times, and that of cutters made of hard alloy VK-8 by 8–10 times. Additions of impact diamond to hard alloy in the amount of 6.25 and 12.5 vol.% increase the relative wear resistance of the hard alloy composite compared to the original VK-8 alloy by 10–15 and 20–25 %, respectively.

Publisher

Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus

Reference16 articles.

1. Sverkhtverdye materialy: poluchenie i primenenie. T. 1: Sintez almazov i podobnykh materialov [Superhard materials: production and application. Vol. 1: Synthesis of diamonds and similar materials]. Kiev, ALKON Publ., 2003. 320 p. (in Russ.).

2. Garshin A.P., Svyazkina T.M. Rezhushchiy instrument na osnove sverkhtverdykh materialov [Cutting tools based on superhard materials]. Saint Petersburg, KhIMIZDAT Publ, 2019. 104 p. (in Russ.).

3. Polushin N.I., Laptev A.I., Sorokin M.N., Ovchinnikova M.S., Maslov A.L. Sverkhtverdye materialy: protsessy polucheniya i svoystva sverkhtverdykh materialov [Superhard materials: production processes and properties of superhard materials]. Moscow, Izdatelskiy Dom NITU MISiS Publ., 2014. 54 p. (in Russ.).

4. Bezhenar N.P., et al. Sintez i spekanie sverkhtverdykh materialov dlya proizvodstva instrumenta [Synthesis and sintering of superhard materials for the production of tools]. Minsk, Belorusskaya nauka Publ., 2021. 337 p. (in Russ.).

5. Klimenko S.A., et al. Finishnaya obrabotka poverkhnostey pri proizvodstve detaley [Surface finishing in the production of parts]. Minsk, Belorusskaya nauka Publ., 2017. 376 p. (in Russ.).