The use of ultradispersed powder additives to obtain hard-alloy working elements of the drilling equipment of the North
https://doi.org/10.31242/2618-9712-2019-24-1-123-130
Abstract
Today, working elements of hard tungsten-cobalt alloys are widely used in drilling equipment. However, the friability and low plasticity of hard alloys often lead to insufficient working capacity of the working elements under conditions of intensive operational loads of the North drilling equipment (frozen soil, rocks, etc.). One of the ways to improve the structure and properties of hard alloys is to control the grain size of their carbide phase by injection growth inhibitors from ultradispersed powders. Ultradispersed powder additives introduced into tungsten-cobalt alloys, contribute to reducing the size of tungsten carbide grains in the alloy structure. This leads to the improvement of the physicomechanical and operational properties of the working elements of the drilling equipment. The paper presents the results of research on the use of ultrafine magnesium spinel powder MgAl2O4 and silicon carbide SiC to improve the structural condition and physicomechanical properties of the VK8 tungsten-cobalt alloy. The technological operations for the preparation of powder
mixtures and the manufacture of drilling plates with ultradispersed additives were reasonably and selected. The physicomechanical properties and structure of experimental drilling plates are investigated. For this purpose, traditional methods of studying mechanical properties added with metallographic analysis were used. The results of experimental studies show the potential use of ultradispersed magnesium spinel powder MgAl2O4 and silicon carbide SiC additives to improve the physicomechanical and operational properties of drilling plates made of VK8 tungsten-cobalt alloy.
About the Authors
M. V. Fedorov
Larionov Institute of the Physical-Technical problems of the North SB RAS
Russian Federation
Russian Federation
FEDOROV Mikhail Vladomirovich, Leading Engineer, Larionov Institute of the Physical-Technical problems of the North SB RAS, 1, Oktyabrskaya st., Yakutsk, 677980, Russia, https://orcid.org/0000-0002-1193-3071, fedorov.83@mail.ru;
M. I. Vasilyeva
Larionov Institute of the Physical-Technical problems of the North SB RAS
Russian Federation
Russian Federation
VASILYEVA Maria Ilinichna, Candidate of Technical Sciences, Head of the Department, Larionov Institute of the Physical-Technical problems of the North SB RAS, 1, Oktyabrskaya st., Yakutsk, 677980, Russia, https://orcid.org/0000-0002-4466-5499, vasileva_mi@mail.ru;
G. G. Vinokurov
Larionov Institute of the Physical-Technical problems of the North SB RAS
Russian Federation
Russian Federation
VINOKUROV Gennadiy Georgievich, Candidate of Technical Sciences, Leading Researcher, Larionov Institute of the Physical-Technical problems of the North SB RAS, 1, Oktyabrskaya st., Yakutsk, 677980, Russia, https://orcid.org/0000-0003-1454-6293, g.g.vinokurov@iptpn.ysn.ru.
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Review
For citations:
Fedorov M.V., Vasilyeva M.I., Vinokurov G.G. The use of ultradispersed powder additives to obtain hard-alloy working elements of the drilling equipment of the North. Arctic and Subarctic Natural Resources. 2019;24(1):123-130. (In Russ.) https://doi.org/10.31242/2618-9712-2019-24-1-123-130
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