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ОБРАБОТКА МЕТАЛЛОВ № 4 (65) 2014 35 ОБОРУДОВАНИЕ. ИНСТРУМЕНТЫ 11. Ovcharenko A.G., Kozlyuk A.Yu. Sposob kombinirovannoi magnitno-impul’snoi obrabotki poverkhnostei in- strumentov i detalei mashin [The method of combined magnetic-pulse treatment of surfaces of tools and machine parts]. Patent RF, no. 2339704, 2008. 12. Ovcharenko A.G., Kozlyuk A.Yu., Kurepin M.O. Induktory dlya kombinirovannoi magnitno-impul'snoi ob- rabotki instrumentov razlichnoi formy [Induction coils for combined magnetic impulse work of tools of various shapes], Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) – Metal Working and Material Science , 2008, no. 3, pp. 11–12. 13. Mishin D.D. Magnitnye materialy [Magnetic materials]. Moscow, Vysshaya shkola Publ., 1981. 335 p. Received 13 October 2014 Revised 05 November 2014 Accepted 10 November 2014