ANALYSIS OF THE INFLUENCE OF THE HEAT TREATMENT ON FUNCTIONAL PROPERTIES OF HOT-DIP ZINC COATED FASTENERS

1 JEDRZEJCZYK Dariusz
Co-authors:
1 SZATKOWSKA Elżbieta 1 SKOTNICKI Wojciech
Institution:
1 University of Bielsko-Biała, 43-309 Bielsko-Biała, Willowa 2, Poland, EU, djedrzejczyk@ath.bielsko.pl; ela.szatkowska@gmail.com; wskotnicki@ath.bielsko.pl
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1016-1021
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
13 views / 5 downloads
Abstract

The presented work constitutes the continuation of the previous research concerning the measurement of the tribological properties of different zinc coatings deposited to fasteners. The applied heat treatment was mainly focused on increasing the hardness of the outer layer of the zinc coating and increasing wear resistance. Fasteners (M12-60 bolts) were galvanized in industrial conditions (according to PN-EN ISO 10684), and next were subjected to the heat treatment in an electric chamber furnace. Bolt sets were subjected to analyses using the Schatz ® Analyse device. It lets for determining the quality of fasteners in realistic working conditions (e.g. assembly) and according to international standards. Results of attempts allowed for determination the rate of the friction coefficient of bolts and nuts on the thread and under the head and verification of the coating heat treatment influence on measured parameters - microstructure changes, micro-hardness distribution and coating topography of the zinc coating before and after the heat treatment.

Keywords: Hot-dip zinc coating, fasteners, Schatz Analyse
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