Перегляд по Автору "Baochang, L."
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Impregnated drill bits strengthened by nanoparticles for mineral exploration drilling
Baochang, L.; Siqi, L.; Zhe, H.; Xinzhe, Z. (2018)In order to improve the drilling efficiency and service life of impregnated diamond drill bit, WC and ZrO2 nanoparticles were introduced into traditional drill bit matrix. The matrix formula and fabrication process were ... -
The procedure for determining pressure losses in washing fluid flow in hydraulic system of the core barrel
Kozhevnykov, A; Dreus, A; Baochang, L (National Mining University, 2017-03-30)Purpose. Development of calculation procedure and analysis of pressure losses in the flow of washing fluid circulating through a hydraulic system of the core barrel. Methods. Theoretical analysis based on the methods of ...