Journals →  Tsvetnye Metally →  2013 →  #2 →  Back

COMPOZITES AND MULTIPURPOZE COATINGS
ArticleName Influence of the structure of diamond drill bits' matrices on their abrasion resistance. Part 2. Research of wear resistance of diamond drill bits
ArticleAuthor Polushin N. I., Laptev A. I., Baragunov E. M.
ArticleAuthorData

National University of Science and Technology “MISiS”, Moscow, Russia

N. I. Polushin, Head of the Scientific and Research Laboratory “Superhard materials”
A. I. Laptev, Leading Researcher of the Scientific and Research Laboratory “Superhard materials”, e-mail: laptev@misis.ru
E. M. Baragunov, Student

Abstract

This article considers the testings, which were carried out for wear resistance of experimental diamond drill bits, made with application of 4 matrices of complex chemical composi tion: (WC – Co – Fe – Cu), (WC – Co – Fe – Cu – Ni), (WC – Cu + cast tungsten carbide (melted and crashed WC)), and (WC – Cu – Ni + cast tungsten carbide). There were used the synthetic diamond powders of SDB 1125 30/40 type, produced by the “Element six” company. The content of diamonds in the bits is 2,4·10–4 kg, their concentration is 25%. The process of bits manufacturing was carried out by infiltration method, at the temperature of 1150 оC, during 15 min. The wear resistance testings were carried out when drilling the abrasive circles, granite and marble. During the research process, it was established, that, taking into account the influence on the silicon carbide abrasive circles, the most wear resistant is the tool, made with application of (WC – Cu – Ni + cast tungsten carbide) matrices. The microhardness of cast tungsten carbide is much higher than the microhardness of the main structure of matrix. The cast tungsten carbide is contained in the (WC – Cu – Ni + cast tungsten carbide) and (WC – Cu + cast tungsten carbide) matrices. According to this, the wear resistance of these matrices considerably exceeds the wear resistance of (WC – Co – Fe – Cu) and (WC – Co – Fe – Cu – Ni) matrices. Addition of nickel into the potting material improves the wear resistance of (WC – Сo – Fe – Cu) and (WC – Cu + cast tungsten carbide) matrices, at the expense of increasing in hardness. However, using the tool for working with marble and granite is not effectual, because increasing of wear resistance of matrix doesn't lead to increasing of wear resistance of diamond drill bits.

keywords Diamond drill bit, matrix, diamond tool, mechanical testings, wear resistance, abrasive circles, granite, marble
References

1. Tsypin N. V. Iznosostoykost kompozitsionnykh almazosoderzhashchikh materialov dlya burovogo instrumenta (Wear resistance of composite diamond containing materials for drilling tools). Kiev : Naukova dumka, 1983. 192 p.

2. Bugakov V. I., Elyutin A. V., Karavaev K. M., Laptev A. I., Polushin N. I. Izvestiya vuzov. Tsvetnaya metallurgiya – Russian Journal of Non-Ferrous Metals. 1998. No. 4. pp. 54–57.
3. Bugakov V. I., Elyutin A. V., Karavaev K. M., Laptev A. I., Polushin N. I. Novyy tip svyazok na osnove nikelya, legirovannogo diboridami titana i khroma, dlya almaznogo kamnerazrushayushchego instrumenta (New type of bindings on the basis of nickel, alloyed with titanium and chromium diborides, used for the diamond saxifragant tools). Izvestiya vuzov. Tsvetnaya metallurgiya — Russian Journal of Non-Ferrous Metals. 1998. No. 5. pp. 61–68.
4. Bugakov V. I., Elyutin A. V., Laptev A. I., Pozdnyakov A. A., Polushin N. I. Materialovedenie — Materials Science. 2003. No. 12. pp. 48–52.
5. Bugakov V. I., Laptev A. I., Polushin N. I., Bocharov M. V., Sorokin M. N. Materialovedenie – Materials Science. 2004. No. 2. pp. 24–28.
6. Bugaev A. A. Issledovanie i razrabotka koronok, impregnirovannykh sinteticheskimi almazami, i effektivnosti ikh primeneniya pri burenii geologorazvedochnykh skvazhin : dissertatsiya ... kandidata tekhnicheskikh nauk (Research and development of bits, infiltrated with synthetic diamonds, and their usage efficiency with the drilling of geological prospecting wells : Dissertation ... of Candidate of Engineering Sciences). Moscow, 1970.
7. Bugakov V. I., Laptev A. I., Pozdnyakov A. A. Izvestiya vuzov. Tsvetnaya metallurgiya — Russian Journal of Non-Ferrous Metals. 2005. No. 6. pp. 69–72.
8. Bondarenko N. A., Zhukovskiy A. N., Mechnik V. A. Osnovy sozdaniya almazosoderzhashchikh kompozitsionnykh materialov dlya porodorazrushayushchikh instrumentov (Creation basis of diamond containing composite materials for rock destroying tools). Kiev : V. Bakul Institute for Superhard Materials of the National Academy of Sciences of Ukraine, 2008. 456 p.
9. Budyukov Yu. E., Vlasyuk V. I., Spirin V. I. Almaznyy instrument dlya bureniya napravlennykh i mnogostvolnykh skvazhin (Diamond drilling tool for directionally drilled and multilateral wells). Tula : Grif and K, 2007. 176 p.
10. Osnovy proektirovaniya i tekhnologiya izgotovleniya abrazivnogo i almaznogo instrumenta (Basis of projecting and manufac turing technology of abrasive and diamond tools). Under the editorship of V. N. Bakul. Moscow : Mashinostroenie, 1975. 296 p.
11. Vliyanie matrits burovykh koronok na ikh abrazivnuyu stoykost. Chast 1. Svoystva matrits burovykh koronok (Influence of the structure of diamond drill bits` matrices on their abrasion resistance. Part 1. Properties of matrices of diamond drill bits). Tsvetnye Metally — Non-ferrous metals. 2013. No. 1.
12. Metallovedenie. Tom 2. Termicheskaya obrabotka. Splavy (Physical metallurgy. Volume 2. Thermal treatment. Alloys). Under the general editorship of V. S. Zolotarevskiy. Moscow : MISiS, 2009. 528 p.

Language of full-text russian
Full content Buy
Back