To the justification for use of multi-sector schemes of single- layered diamond crowns with shorted sectors

Abstract

The issues of the possibility of using multiple sector single-layer diamond crowns with truncated sectors containing not more than four radial rows of diamonds are considered. The computer simulation of the thermal regime of a single-layer diamond crown with a different number of radial rows of diamonds in the sector showed that limiting the number of radial rows in the sector of a single-layer diamond crown causes its efficiency to be improved both from the point of view of ensuring uniform loading and wear of the diamond tools and ensuring a more gentle temperature mode of the most loaded diamonds. The uneven loading of individual diamonds in the sector of a single-layered crown decreases with a decrease in the number of radial rows. The most optimal from this point of view are the crowns with two radial rows in the sector. This improves the cleaning of the slaughter face. Crowns with a two-row layout have a significant resource for boosting drilling modes, which will increase the mechanical penetration rate of geological exploration wells