Composites based on cBN micron powders structured by carbon binder for the application as functional elements in the working layer of diamond-abrasive tools. Part 2. Composites as bearing elements

Lavrinenko, V. I.; Sytnyk, B. V.; Poltoratskyi, V. G.; Bochechka, О. О.; Solod, V. Yu.

doi:10.3103/s1063457614050074

Cited by 6 publications

(3 citation statements)

References 1 publication

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“…Введення зерен компактів у робочий шар алмазного кругу (50 на 50) і покриття поверхні зерен цієї суміші в обох випадках погіршує зносостійкість алмазних кругів, що свідчить про відсутність позитивного ефекту. Але враховуючи, що введені компакти у вигляді «опорних елементів» [8], позитивний ефект ми можемо отримати у напрямку зниження шорсткості обробленої поверхні та збільшення її тримальної здатності у вигляді підвищення показника опорної кривої t50 (рис. 1).…”

Section: постановка проблемиunclassified

“…Свого часу нами було встановлено[7,8], що наявність компактів в робочому шарі кубонітового кругу дозволяє досягти шорсткості оброблюваної поверхні із так званими «масляними кишенями», тобто у випадку підвищених (за 80 %) значень такого параметра кривої опорної поверхні, як t50. Аналіз даних табл.…”

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Formation of Combined Wear-Resistant Coatings on the Surface of the Grains of a Mixture of Diamond Grinding Powder (Or Cnb) and Compacts Based on CBN Micropowder for Application in Grinding Tools

Lavrinenko,

Solod,

Poltoratskyi

et al. 2024

CDSTU

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Modern technologies of abrasive processing of materials require the use of powders with unique properties of thermal stability and wear resistance, specific grain morphology that improves the modification process, with increased chemical and thermal resistance in the abrasive tool. The main way to solve this problem is to use synthetic diamond grinding powders and composite grinding powders based on cBN abrasive micropowders with formed thermostable wear-resistant, combined from a mixture of soluble and insoluble activated by mechano-chemical technology as abrasives in the working layer of the abrasive tool components, oxygen- and carbide-containing coatings. The purpose of this article was to study the formation of coatings on diamond grains (and their mixtures with compacts) from 2- and 3-components, their further use in diamond grinding tools and the establishment of the most effective combined coatings to increase the wear resistance of grinding wheels and improving the roughness of the machined surface with such wheels. The introduction of grains of compacts into the working layer of the diamond wheel (50 by 50) and the coating of the surface of the grains of this mixture worsens the wear resistance of diamond wheels. Studies have shown that with an increase in processing productivity, the surface coating of cBN grains has the effect of increasing the wear resistance of wheels, but the additional presence of compacts gives an even greater effect. It is here, in contrast to diamond wheels, that we have a positive from the introduction of compacts with a surface coated with a combination of B2O3+SiC. The main conclusion is that coating the surface of grains, both cBN and with the presence of compact grains, can give an effect on wear resistance precisely when processing productivity is increased.

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Section: постановка проблемиunclassified

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Formation of Combined Wear-Resistant Coatings on the Surface of the Grains of a Mixture of Diamond Grinding Powder (Or Cnb) and Compacts Based on CBN Micropowder for Application in Grinding Tools

Lavrinenko,

Solod,

Poltoratskyi

et al. 2024

CDSTU

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“…Diamond tools are widely used in geological drilling, stone processing, semiconductor materials cutting, and ceramics grinding [1][2][3]. Diamond is fine particles, so the tools should be made by using binder materials through the sintering process.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of FeCoCu Pre-Alloyed Powders Used for Diamond Tools

Xie

Xiao

Lin

et al. 2018

J. Superhard Mater.

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Thermal analysis of FeCoCu pre-alloyed powders used for diamond tools By simulating the pressureless sintering process, the thermal effects of FeCoCu pre-alloyed powders have been investigated. According to the notions of the Kissinger method, the activation energies in the expansion-shrinkage conversion stage are analyzed. Results show that with Fe content increasing, the specimens' specific heat capacity values present the increasing trend. The 25 %Fe-15 %Co-60 %Cu specimens have negative enthalpy value at 10 and 20°C/min heating rate but positive values at 30 °С/min. For the specimens with lower Cu content, the enthalpies are always positive. It is established that both the specific heat capacity and enthalpy are larger when at higher heating rates. The activation energy of the 65 %Fe-15 %Co-20 %Cu specimens is 10 times higher than that of the 25 %Fe-15 %Co-60 %Cu specimens and the 45 %Fe-15 %Co-40 %Cu specimens.

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A novel composite diamond-containing dispersed material of natural and synthetic diamonds powders and abrasive tools made of it

Poltoratskiy

Lavrinenko

Safonova

et al. 2016

Diamond and Related Materials

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Composites based on cBN micron powders structured by carbon binder for the application as functional elements in the working layer of diamond-abrasive tools. Part 2. Composites as bearing elements

Cited by 6 publications

References 1 publication

Formation of Combined Wear-Resistant Coatings on the Surface of the Grains of a Mixture of Diamond Grinding Powder (Or Cnb) and Compacts Based on CBN Micropowder for Application in Grinding Tools

Formation of Combined Wear-Resistant Coatings on the Surface of the Grains of a Mixture of Diamond Grinding Powder (Or Cnb) and Compacts Based on CBN Micropowder for Application in Grinding Tools

Thermal Analysis of FeCoCu Pre-Alloyed Powders Used for Diamond Tools

A novel composite diamond-containing dispersed material of natural and synthetic diamonds powders and abrasive tools made of it

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