ПОЛІПШЕННЯ ФІЗИКО-МЕХАНІЧНИХ ХАРАКТЕРИСТИК СИНТЕТИЧНИХ АЛМАЗІВ ДЛЯ ПРАВЛЯЧОГО ІНСТРУМЕНТУ
The results of studies of the influence of heat treatment on the physicomechanical characteristics of 500/400 and 250/200 grit diamond grinding powders after their separation in a magnetic field of different strengths are presented. It is shown that for both grit sizes, separation in a magnetic fiel...
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| Date: | 2020 |
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| Main Authors: | , , , , , , , , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины
2020
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| Subjects: | |
| Online Access: | http://altis-ism.org.ua/index.php/ALTIS/article/view/155 |
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| Journal Title: | Tooling materials science |
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Tooling materials science| Summary: | The results of studies of the influence of heat treatment on the physicomechanical characteristics of 500/400 and 250/200 grit diamond grinding powders after their separation in a magnetic field of different strengths are presented. It is shown that for both grit sizes, separation in a magnetic field facilitates the production of diamond fractions that differ in the content of intracrystalline inclusions in them and the change in their physical and mechanical characteristics: strength, uniformity in strength, and heat resistance. In diamond powders with a higher content of intracrystalline inclusions, after heat treatment in an inert medium, a decrease in the strength of crystals is observed for both grit sizes both at a temperature of 800 °C and at 1100 °C. In diamond powders with a lower content of intracrystalline inclusions after processing at a temperature of 800 °C, due to a decrease in internal stresses, an insignificant (not more than 5 %) increase in strength occurs. The thermal stability of both grit sizes for all studied diamond fractions, decreases with an increase in the content of intracrystalline inclusions in them |
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