INCREASING THE DURABILITY OF AN IMPREGNATED DIAMOND CORE BIT FOR DRILLING HARD ROCKS

被引：0

作者：

Ratov, B. T. ^{[1
]}

Mechnik, V. A. ^{[2
]}

Bondarenko, N. A. ^{[2
]}

Kolodnitsky, V. N. ^{[2
]}

Khomenko, V. L. ^{[3
]}

Sundetova, P. S. ^{[4
]}

Korostyshevsky, D. L. ^{[2
]}

Bayamirova, R. U. ^{[4
]}

Makyzhanova, A. T. ^{[1
]}

机构：

[1] Satbayev Univ, Alma Ata, Kazakhstan

[2] Natl Acad Sci Ukraine, Bakul Inst Superhard Mat, Kiev, Ukraine

[3] Dnipro Univ Technol, Dnipro, Ukraine

[4] Yessenov Univ, Aktau, Kazakhstan

来源：

SOCAR PROCEEDINGS | 2024年 / 01期

关键词：

impregnated diamond core bit; composite; tungsten carbide; cobalt; chromium diboride; durability; spark plasma sintering; WC-CO; MECHANICAL-PROPERTIES; COMPOSITE-MATERIALS; CEMENTED CARBIDES; WEAR-RESISTANCE; CARBON CONTENT; MICROSTRUCTURE; MATRICES; CRB2;

D O I：

10.5510/OGP20240100936

中图分类号：

TE [石油、天然气工业];

学科分类号：

0820 ;

摘要：

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 degrees C 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 25C(diam)-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 25C(diam)-68.62WC- 4.38Co-2CrB(2) 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 25C(diam) -68.62WC-4.38Co-2CrB(2) 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.

引用

页码：24 / 31

页数：8

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