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Volume 10
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10.3390/coatings10080744
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Article

Milling of Complex Surfaces of EN 10060 Steel after HVOF Sprayed NiCrBSi Coatings

by
Jan Valíček
1,
Marta Harničárová
1,*,
Jan Řehoř
1,
Milena Kušnerová
1,
Jaroslava Fulemová
1,
Miroslav Gombár
1,
Ludmila Kučerová
1,
Jan Filipenský
2 and
Jan Hnátík
1
1
Regional Technology Institute, Faculty of Mechanical Engineering, University of West Bohemia, Univerzitni 8, 306 14 Pilsen, Czech Republic
2
PLASMAMETAL, spol. s r. o., Tovární 917/1e, 643 00 Brno-Chrlice, Czech Republic
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(8), 744; https://doi.org/10.3390/coatings10080744
Submission received: 30 June 2020 / Revised: 27 July 2020 / Accepted: 28 July 2020 / Published: 30 July 2020
(This article belongs to the Special Issue New Trends in the Field of Surface Treatment of Thermal Spraying in the Present and Future)
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Abstract

The high-velocity oxy-fuel spraying process was used to investigate and improve the surface properties of a workpiece. The research was focused on the spherical surface of a workpiece made of high-strength steel, a ball and socket assembly. After spraying with a nickel alloy, the surface was machined by milling. The coating was carried out as a process in which a very thin layer of coating of the required thickness and the required specific properties, i.e., high Vickers hardness, adhesion to the surface, wear resistance and other important characteristics, which must be respected in other machining methods, was applied to the already finished, heat-prepared metal substrate. This article deals with the milling of complex surfaces of steel substrate EN 10060 after spraying with NiCrBSi alloy. After spraying, a total of 15 milling experiments were performed in order to determine precisely the optimal cutting parameters of milling and surface adhesion, based on newly acquired prediction relations. The main presented results are new relations for the determination of optimal technological milling conditions based on the identification of adhesive sections using derived equations. The new relations were verified and also compared with the current literature in the field.
Keywords: spraying; coating; milling; surface roughness; surface Vickers hardness spraying; coating; milling; surface roughness; surface Vickers hardness

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MDPI and ACS Style

Valíček, J.; Harničárová, M.; Řehoř, J.; Kušnerová, M.; Fulemová, J.; Gombár, M.; Kučerová, L.; Filipenský, J.; Hnátík, J. Milling of Complex Surfaces of EN 10060 Steel after HVOF Sprayed NiCrBSi Coatings. Coatings 2020, 10, 744. https://doi.org/10.3390/coatings10080744

AMA Style

Valíček J, Harničárová M, Řehoř J, Kušnerová M, Fulemová J, Gombár M, Kučerová L, Filipenský J, Hnátík J. Milling of Complex Surfaces of EN 10060 Steel after HVOF Sprayed NiCrBSi Coatings. Coatings. 2020; 10(8):744. https://doi.org/10.3390/coatings10080744

Chicago/Turabian Style

Valíček, Jan, Marta Harničárová, Jan Řehoř, Milena Kušnerová, Jaroslava Fulemová, Miroslav Gombár, Ludmila Kučerová, Jan Filipenský, and Jan Hnátík. 2020. "Milling of Complex Surfaces of EN 10060 Steel after HVOF Sprayed NiCrBSi Coatings" Coatings 10, no. 8: 744. https://doi.org/10.3390/coatings10080744

APA Style

Valíček, J., Harničárová, M., Řehoř, J., Kušnerová, M., Fulemová, J., Gombár, M., Kučerová, L., Filipenský, J., & Hnátík, J. (2020). Milling of Complex Surfaces of EN 10060 Steel after HVOF Sprayed NiCrBSi Coatings. Coatings, 10(8), 744. https://doi.org/10.3390/coatings10080744

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