Obrabotka Metallov 2014 No. 4

ОБРАБОТКА МЕТАЛЛОВ № 4 (65) 2014 34 ОБОРУДОВАНИЕ. ИНСТРУМЕНТЫ 2 Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, 4/1 Institutskaya str., Novosibirsk, 630090, Russian Federation 3 Lavrentyev Institute of Hydrodynamics of the Siberian Branch of the RAS, 15 Ac. Lavrentieva ave., Novosibirsk, 630090, Russian Federation Abstract Creating a rock cutting tool with high performance is a burning problem and its solution will be a significant reserve of the further rise in the efficiency of drilling. The method of combined magnetic-pulse treatment including preheating and effects of pulsed magnetic field to improve the wear resistance of drilling tools carbide type VK8 is proposed. Wear resistance of the samples are evaluated on the equipment for erosion testing according to ASTM G76-07 «Standard Test Method for Conducting Erosion Tests by Solid Particle Impingement Using Gas Jets». The results of experimental investigations show that the preheating temperature of 1000 °C, the magnetic induction of 1.8 T and a pulse influence time 7∙10 -4 s of the wear treated samples are 2.5 times less than the untreated control samples. The proposed method of processing carbide tools is promising for mining industry. In future research on the application of the combined magnetic-pulse treatment of drilling carbide tools will be expanded. Keywords : magnetic-pulse treatment, hardness, drilling, carbide tools, surface hardening, wear resistance. References 1. Ryabchikov S.Ya. Ob”emnoe uprochnenie tverdosplavnogo i almaznogo porodorazrushayushchego instru- menta s tsel’yu povysheniya ego ekspluatatsionnykh pokazat. Diss. dokt. tekhn. nauk [Volumetric hardening of hard- alloy and diamond rock cutting tool for improve its operational performance. Dr. eng. sci. diss.]. Tomsk, 2002. 309 p. 2. Malygin B.V. Magnitnoe uprochnenie instrumenta i detalei mashin [Magnetic hardening of tools and machine parts]. Moscow, Mashinostroenie Publ., 1989. 112 p. ISBN 5-217-00448-7 3. Furth H.P., Waniek R.W. New ideas on magnetic forming. American Machinist / Metalworking Manufacturing , 1962, vol. 106, pp. 92–95. 4. Belyi I.V., Fertik S.M., Khimenko L.T. Spravochnik po magnitno-impul’snoi obrabotke metallov [Magnetic- pulse treatment of metals: Handbook]. Kharkov, Vishcha shkola Publ., 1977. 168 p. 5. Durachenko A.M., Malinochka E.Ya. Vliyanie impul’snoi obrabotki na relaksatsionnye spektry amorfnykh splavov na osnove zheleza i nikelya [Effect of pulse treatment on the relaxation spectra of amorphous alloys based on iron and nickel]. Izvestiya Akademii Nauk SSSR. Seriya Metally – Bulletin of the Academy of Sciences of the USSR. Series: Metals , 1985, no. 6, pp. 167–170. 6. Vorob’eva G.A., Ivoditov A.N., Sizov A.M. O strukturnykh prevrashcheniyakh v metallakh i splavakh pod vozdeistviem impul’snoi obrabotki [Structural transformations in metals and alloys under the influence of pulse pro- cessing]. Izvestiya Akademii Nauk SSSR. Seriya Metally – Bulletin of the Academy of Sciences of the USSR. Series: Metals , 1991, no. 6, pp. 131–137. 7. Orlov A.S. Povyshenie rabotosposobnosti rezhushchikh instrumentov putem uprochneniya impul'snoi mag- nitnoi obrabotkoi. Avtoref. diss. kand. tekhn. nauk [Increasing the efficiency of cutting tools by pulsed magnetic hardening treatment. Author's abstract of Ph.D. eng. sci. diss.]. Ivanovo, 2012. 20 p. 8. Sukhorukova S.E. Vybor i obosnovanie metoda povysheniya stoikosti burovykh koronok. Avtoref. diss. kand. tekhn. nauk [Selection and justification of the method of increasing the resistance of crown bits. Author's abstract of Ph.D. eng. sci. diss.]. Moscow, 2013. 20 p. 9. Ovcharenko A.G., Kozlyuk A.Yu., Kurepin M.O. Povyshenie iznosostoikosti plastin iz tverdogo splava [The increase of wear resistance for the hard-facing alloys plates]. Obrabotka metallov (tekhnologiya, oborudovanie, in- strumenty) – Metal Working and Material Science , 2010, no. 2 (47), pp. 13–15. 10. Ovcharenko, A.G., Kozlyuk A.Yu., Kurepin M.O., Tyurin A.G., Terentiev D.S. Issledovanie vliyaniya kom- binirovannoi magnitno-impul’snoi obrabotki na kachestvo tverdosplavnogo instrumenta [The investigation of effect combined magnetic pulse treatment on quality hardmetal tools]. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) – Metal Working and Material Science , 2011, no. 3 (52), pp. 95–98.