INCREASING THE DURABILITY OF AN IMPREGNATED DIAMOND CORE BIT FOR DRILLING HARD ROCKS
Ratov B.T. Mechnik V.A. Bondarenko N.A. Kolodnitsky V.N. Khomenko V.L. Sundetova P.S. Korostyshevsky D.L. Bayamirova R.U. Makyzhanova A.T.
2024Oil Gas Scientific Research Project Institute
SOCAR Proceedings
2024Issue 124 - 31 pp.
Wear rates of impregnated diamond core bits made from two composite diamond-containing materials (CDM) are studied by spark plasma sintering (SPS) in the temperature range 20–1350 ℃ at a pressure of 30 MPa for 3 minutes while drilling granite. The addition of chromium diboride (CrB2) micropowder in an amount equal to 2% of the composition of CDM 25Cdiam–70.5WC–4.5Co leads to a twofold decrease in the wear rate. The wear resistance of crowns made from CDM 25Cdiam–70.5WC–4.5Co and 25Cdiam–68.62WC–4.38Co‒2CrB2 is maximized at a rotary speed of 250 rpm and an axial load of 900 kg, and minimized at 750 rpm and 1250 kg. The increase in wear resistance of the 25Cdiam–68.62WC–4.38Co‒2CrB2 crown is due to the refinement of the grains of the main wolfram carbide (WC) phase and the formation of strong adhesion of the diamond grains to the carbide matrix.
chromium diboride , cobalt , composite , durability , impregnated diamond core bit , spark plasma sintering , tungsten carbide
Text of the article Перейти на текст статьи
Satbayev University, Almaty, Kazakhstan
Bakul Institute for Superhard Materials, National Academy of Sciences of Ukraine, Kyiv, Ukraine
Dnipro University of Technology, Dnipro, Ukraine
Yessenov University, Aktau, Kazakhstan
Satbayev University
Bakul Institute for Superhard Materials
Dnipro University of Technology
Yessenov University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026