EFFECT OF VIBRO-ABRASIVE MACHINING ON THE QUALITY OF THE ZINC COATINGS

1 WĘGRZYNKIEWICZ Sylwia
Co-authors:
2 HAJDUGA Maciej
Institutions:
1 BELOS - PLP S.A., Bielsko-Biała, Poland, EU, sylwia.wegrzynkiewicz@belos-plp.com.pl
2 Academy of Technology and Humanities, Bielsko-Biała, Poland, EU, mhajduga@ath.bielsko.pl
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
861-866
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
39 views / 10 downloads
Abstract

The purpose of the work was to assess the influence of the vibro-abrasive treatment on the quality of the zinc coating. The use of vibro-abrasive finishing in the production process of fittings for overhead power line is designed to improve the aesthetics of the coating by eliminating zinc beads and burrs, as well as shorten the time of detecting the details on the production. Research was focused on ball-eye links, made of steel grade 41Cr4. The vibro-abrasive machining was carried out in an R 320 device using porcelain polishing fittings type R 8/10 and technological liquid type COMPUND FC after hot dip galvanizing.Comparative tests were conducted for samples without and with vibro-abrasive machining. The effects were evaluated on the basis of metallographic analysis, evaluation of surface roughness and topography, microhardness measurement and corrosion tests.It was found that the use of additional treatment after galvanizing improves aesthetic features of products and does not significantly reduce its corrosion resistance.

Keywords: Vibro-abrasive machining, hot dip galvanizing, zinc coating, corrosion resistance
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