Abstract
In this paper, two excessive worn brake discs of a light commercial vehicle were coated with High velocity oxygen fuel (HVOF) thermal spray process for reuse. The coated discs were compared with uncoated Original equipment manufacturer (OEM) D1 disc in terms of braking performance and noise. The D2 disc was coated with tungsten-carbide-cobalt (88 %WC-12 %Co) powder and NiCr (80/20) binder, and 500 Gm thick coating was obtained. The D3 disc was coated with Colmonoy-88 (Ni-W-Cr-B-Si) powder and NiCr (80/20) binder and 600 Gm thick coating was obtained. Several test procedures (e.g. bedding, vibration, and structural-strength tests) was applied to three discs using inertia brake dynamometer. Results showed that coated D2 disc with tungsten carbide cobalt provided lower brake noise and higher brake performance compared with OEM disc. Considering the coefficient of friction and temperature, coated D3 disc has approximately equal braking performance with OEM D1 disc despite the high braking noise value.
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Ali ÖZ graduated from Department of Mechanical Education at Gazi University in 1993. He received his M.Sc. degree from the Department of Mechanical Engineering of Süleyman Demirel University in 1997. He obtained his Ph.D. degree from the Department of Mechanical Engineering of Süleyman Demirel University in 2012. He is currently an Assistant Prof. Dr. at Automotive Technology of Mehmet Akif University. His main research interests are energy, vehicle brake systems, and alternative fuels.
Habib GÜRBÜZ graduated from the Department of Mechanical Education at Gazi University in 2002. He received his M.Sc. degree from he Department of Mechanical Education of Dumlupınar University in 2005. He then obtained his Ph.D. degree from the Department of Mechanical Engineering of Süleyman Demirel University in 2010. Currently, he is an Assistant Prof. Dr. at Mechanical Engineering of Süleyman Demirel University. His main research interests are internal combustion engine, combustion, alternative fuels, hydrogen energy, ion current, and HAJI.
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Öz, A., Gürbüz, H., Yakut, A.K. et al. Braking performance and noise in excessive worn brake discs coated with HVOF thermal spray process. J Mech Sci Technol 31, 535–543 (2017). https://doi.org/10.1007/s12206-017-0106-4
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DOI: https://doi.org/10.1007/s12206-017-0106-4