Улучшение физико-механических характеристик синтетических алмазов, синтезированных в разных ростовых системах, для повышения эффективности алмазного камнеобрабатывающего и правящего инструмента

Abstract

The hysicomechanical properties grinding powders the synthetic diamond used at equipment tool very big influence is rendered on an overall performance diamond stonetreatment and the precision ruling tool. Properties grinding powders diamond, in turn, are caused by technologies of synthesis, enrichment, processing, classification in the sizes and the form, sorting that promotes reception of powders with the set properties. As a result of perfection of process of synthesis by a number of conducting foreign firms can be made are received. S ynthetic diamonds with very high durability of which high-strength powders of diamond of marks АС200–АС400. Researches carried out on diamonds of grit sizes 400/315 different marks synthesized in systems: Ni-Mn-C, Fe-Ni-C, Fe-Co-C. As a result of the executed researches it is shown, that hysicomechanical characteristics diamond grinding powders (strength and thermostability), synthesized in different ростовых systems Ni-Mn-C, Fe-Co-C and Fe-Ni-C, with the big contents of intracrystal impurity and inclusions (it is more twice ) in comparison with diamonds with the smaller contents – are reduced from 3 up to 5 times. For increase of efficiency of division grinding powders the synthetic diamond, the ferroalloys synthesized with application, it is developed a way of division of diamonds on deficiency of their surface, by selective drawing electrowire very fine disperse powder particles and due to forces of adhesion of their fastening on a surface of grains of a powder (for amplification of natural electric properties), that allows to divide a grain of diamond in an electric field on 5-7 fractions differing among themselves on strength characteristics and to improve selectivity of their division on strength characteristics. Use in the tool diamond grinding powders with high uniformity on durability will allow to raise efficiency diamond stonetreatment and the ruling tool.