Učenye Zapiski Komsomolʹskogo-na-Amure Gosudarstvennogo Tehničeskogo Universiteta (Jun 2016)

SURFACE PLASTIC DEFORMATION OF ELECTRO-SPARK COATINGS

  • Mr. Sergei N. Khimukhin,
  • Ms. Ksenia P. Eremina,
  • Mr. Ri Khosen,
  • Mr. Ri Ernst Kh.,
  • Mr. Vadim V. Chernomas

DOI
https://doi.org/10.17084/2016.II-1(26).12
Journal volume & issue
Vol. 1, no. 1
pp. 76 – 81

Abstract

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The research provides facts about the surface plastic deformation (SPD) effect on the coatings surface parameters formed by electro-spark alloying (ESA). The complex for nonabrasive ultrasonic finishing (NUF) was used as the installation for SPD. It was found out that when processing bronze by NUF several passes of indenter were needed to provide substantial decrease of the surface roughness parameters. The NUF effect on roughness parameters of intermetallic coatings on steel 20X13 was studied. NUF proved to be perspective when it is necessary to reduce the number of transverse cracks in the coatings formed by ESD method. In order to assess the efficiency of coating surface treatment by NUF method the use of additional parameters Rk, Rpk, Rvk alongside with Ra are recommended as they allow assessing the resulting surface as triple. It is found out that the number of passes during the processing of intermetallic coatings should not exceed 6. For achieving maximum processing efficiency it is necessary to take into consideration the initial roughness value.

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