TECHNOLOGY AND APPLICATION OF ELECTRO-SPARK DEPOSITED COATINGS

1 RADEK Norbert
Co-authors:
2 PIETRASZEK Jacek 3 SZCZOTOK Agnieszka
Institutions:
1 Kielce University of Technology, Centre for Laser Technologies of Metals, Kielce, Poland, EU
2 Cracow University of Technology, Faculty of Mechanical Engineering, Kraków, Poland, EU
3 Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Katowice, Poland, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1432-1437
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
22 views / 13 downloads
Abstract

The paper described properties of electro-spark deposited coatings. The processes of coating formation on metal parts including electro-spark deposition involve mass and energy transport accompanied by chemical, electrochemical and electrothermal reactions. The tests were conducted to analyze the operational properties of steel beaters used in a hammer mill for waste paper recycling. The degree of wear and the development of wear processes were studied for specimens with and without electro-spark deposited coatings. The studies were conducted using WC-Co-Al2O3 electrodes produced by sintering powders. The anti-wear coatings were electro-spark deposited over C45 carbon steel by means of an EIL-8A.The operational properties of the specimens were assessed by analyzing their micostructure, microhardness, surface geometric structure, corrosion resistance and tribological properties. The results show that more effective methods are required to increase the durability of beaters for hammer mills.

Keywords: electro-spark deposition, coating, properties, steel beater
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