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ArticleName Test method for diamond-hardmetal pcd composites used to equip the pdc drill bits
DOI 10.17580/tsm.2017.11.15
ArticleAuthor Kuftyrev R. Yu., Kotelnikova O. S., Laptev A. I., Sorokin M. N.

LLC “Zavod tekhnicheskoy keramiki”, Aprelevka, Russia:

R. Yu. Kuftyrev, Head of Technological Department


National University of Science and Technology “MISiS”, Moscow, Russia:
O. S. Kotelnikova, Engineer of Scientific and Research Laboratory of Superhard Materials
A. I. Laptev, Chief Researcher of Scientific and Research Laboratory of Superhard Materials, e-mail:
M. N. Sorokin, Senior Researcher of Scientific and Research Laboratory of Superhard Materials


We studied the wear patterns of PCD cylindrical cutting elements (GES 1313). In our investigation, abrasive wheels 64C (SiC) were cut by turning with different feed rates and cutting depths. There were also taken such wear resistance characteristics as: the ratio of the abrasive disc volume decrease to the loss of the diamond layer weight; the dependence of this index on the degree of bluntness of the PCD cutters; the dependence of the relative volume wear of the PCD diamond layer when cutting the abrasive wheel on the degree of PCD wear. The volume wear of abrasive wheels 64C is proportional to the loss of mass of the PCD composite to the formation of a wear area of 1.4 mm on the back surface of the tool (the proponality factor is 111). The wear resistance of the PCD composite is 114 cm3/mg and does not depend on a wide range from the feed (0.1–0.7 mm/rev) and the depth of cut (0.1–0.2 mm). The relative wear resistance of the PCD cutting elements when cutting abrasive wheels with respect to abrasive wheels is (4–5)·105 and is not affected by the degree of bluntness on the back surface to 1.4 mm. Wear resistance tests by the method of turning abrasive wheels 64C can be recommended as an express method for determining the wear resistance of PCD composites.
Our investigation was carried out within the Federal Target Project of a Program “Investigations on the priority ways of development of scientific and technological complex of Russia for 2014–2020”; the Applied Scientific Investigation “Development of technology of obtaining of nanostructured materials for carrier bodies with high impact elasticity” within the subsidiary agreement No. 14.579.21.0093. (27.07.2015; unique ID: RFMEFI57915X0093) on the Comprehensive Project “Development of production technology for high-efficient horizontal and directed drilling bits for oil and gas industry”.

keywords PCD cutting element, PDC drill bit, diamond drill bit, diamond composite material, HPHT, CVD, cutting abrasive wheels, wear resistance, wear parameters, cutting modes

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