Ms. Nadiia Talimonova Profile

Nadiia Talimonova

at NTUU «Igor Sikorsky Kyiv Polytechnic Institute»

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Author

Publications (4)

Proceedings Article | 5 January 2024 Paper

Optical and mechanical investigation of the printing equipment parts surface topography

Petro Kyrychok, Oksana Barauskiene, Tetyana Klymenko, Nadiia Talimonova, Volodymyr Baglai, Svitlana Zyhulia

Proceedings Volume 12938, 1293818 (2024) https://doi.org/10.1117/12.3012725

KEYWORDS: Printing, Vibration, Deformation, Plating, Optical surfaces, Surface roughness, Resistance, Protective coatings, Laser engraving, Adhesion

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A complex technology of strengthening parts has been developed through the formation of a regular microrelief on the surface followed by chrome plating. The strengthening method was vibration rolling, which made it possible to obtain sinusoidal and hexagonal microrelief due to the correlation of processing modes. The conducted studies of the effect of complex processing of parts on quality have established the mechanism of obtaining minimum roughness. When using a vibrating tool with a radius of the deformable element R=2 mm, with a pressing force of Р=550 Н, the surface roughness is observed for a sinusoidal microrelief according to the arithmetic mean deviation Ra from 0.08 to 1.32 μm, for a hexagonal one - from 0.63 to 3, 2 μm, which is 7.5 times less without the use of strengthening methods. Due to this, it is possible to extend the operational properties, ensure the reliability of the application of complex technology followed by chrome plating. The parameters of the profile of the engraved strokes of the intaglio printing forms obtained by the method of direct laser engraving (DLE) were studied; it was found that the features of laser processing of the form material during DLE affects the roughness of the treated surfaces and creates inflows, which can affect the protective coating adhesion, the quality of the formation of the paint layer on the print, its tactile and colour properties. The studied engraved strokes differed in the designed profile, namely, the depth (60–100 μm) and the inclination angle of the stroke walls (45°; 90°). The research results give reasons to assert that all the engraved strokes of the samples have deviations from the given geometric profile (the stroke wall inclination decreases to 25°–30°), are asymmetrical, the protective PVD (Plate Vapor Deposition process) coating has insufficient adhesion to the main material of the form. The paper is devoted to the study of the effect of technological factors on geometric parameters and surface roughness.