A study is made of the effect of the operating regime in electrical-discharge machining (EDM) on the condition and defectiveness of the surfaces of “blind” small-diameter holes drilled in parts made of an oxide-carbide ceramic. The physical pattern that is characteristic of the formation of these surfaces is determined, the morphology of the damaged layer is analyzed, and the surface defects are described. It is established that intensifying the operating regime used for the EDM drilling of holes in a ceramic increases the width of the damage zone.
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This paper was prepared with the support of the Russian Ministry of Science to aid in scientific research that is being conducted as part of a government project.
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Translated from Novye Ogneupory, No. 11, pp. 56 – 61, November, 2014.
1End. Part 1 of this article was published in issue No. 7 of the journal “Novye Ogneupory” for 2014 and Part 2 was published in issue No. 9 for 2014.
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Girgor’ev, S.N., Kuzin, V.V., Fedorov, S.Y. et al. Technological Aspects of the Electrical-Discharge Machining of Small-Diameter Holes in a High-Density Ceramic. Part 31 . Refract Ind Ceram 55, 540–544 (2015). https://doi.org/10.1007/s11148-015-9760-1
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DOI: https://doi.org/10.1007/s11148-015-9760-1