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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-5d5652a3-62c6-494c-8d23-52453261b334

Czasopismo

Archives of Foundry Engineering

Tytuł artykułu

Coefficient of Friction of a Brake Disc-Brake Pad Friction Couple

Autorzy Orłowicz, A. W.  Mróz, M.  Wnuk, G.  Markowska, O.  Homik, W.  Kolbusz, B 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
Abstrakty
EN The paper concerns evaluation of the coefficient of friction characterising a friction couple comprising a commercial brake disc cast of flake graphite grey iron and a typical brake pad for passenger motor car. For the applied interaction conditions, the brake pressure of 0.53 MPa and the linear velocity measured on the pad-disc trace axis equalling 15 km/h, evolution of the friction coefficient μ values were observed. It turned out that after a period of 50 minutes, temperature reached the value 270°C and got stabilised. After this time interval, the friction coefficient value also got stabilised on the level of μ = 0.38. In case of a block in its original state, stabilisation of the friction coefficient value occurred after a stage in the course of which a continuous growth of its value was observed up to the level μ = 0.41 and then a decrease to the value μ = 0.38. It can be assumed that occurrence of this stage was an effect of an initial running-in of the friction couple. In consecutive abrasion tests on the same friction couple, the friction coefficient value stabilisation occurred after the stage of a steady increase of its value. It can be stated that the stage corresponded to a secondary running-in of the friction couple. The observed stages lasted for similar periods of time and ended with reaching the stabile level of temperature of the disc-pad contact surface.
Słowa kluczowe
PL grafit płatkowy   żeliwo   tarcza hamulcowa   odporność na ścierania   współczynnik tarcia  
EN flake graphite   cast iron   brake discs   abrasive wear resistance   friction coefficient  
Wydawca Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
Czasopismo Archives of Foundry Engineering
Rocznik 2016
Tom Vol. 16, iss. 4
Strony 196--200
Opis fizyczny Bibliogr. 12 poz., rys., tab., wykr.
Twórcy
autor Orłowicz, A. W.
  • Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland, aworlow@prz.edu.pl
autor Mróz, M.
  • Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
autor Wnuk, G.
  • Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
autor Markowska, O.
  • Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
autor Homik, W.
  • Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
autor Kolbusz, B
  • Union Parts Sp. z o.o. Bobrowa Wola 72, 39-203 Nagoszyn, Poland
Bibliografia
[1] Stawarz, M. (2008). Quality control of cast brake discs. Archives of Foundry Engineering. 8(1), 119-122.
[2] Dudzik, B (2013). Characteristics of Brake Disc Castings Day by Day. Archives of Foundry Engineering. 13(spec.2), 35-38.
[3] Wojciechowski, A., Rudnik, D., Pietrzak, K., Sobczak, J., Nowak, A. (2000). The new generation of brake discs and composite materials (Nowa generacja tarcz hamulcowych i materiałów kompozytowych). IV Seminar: Composite Theory and Practice (IV Seminarium: Kompozyty Teoria i Praktyka), Częstochowa, Poland, 180-190.
[4] Stawarz, M. (2013). The influence of changing operating conditions associations friction disc brake - friction linings on the operating parameters (Wpływ zmiennych warunków eksploatacji skojarzenia ciernego tarcza hamulcowa - okładziny cierne na parametry pracy). Corrosion Protection (Ochrona przed korozją). 56(10), 449-452. (in Polish).
[5] Podrzucki, Cz. (1991). Cast iron. Structure. Properties. Application (Żeliwo. Struktura. Właściwości. Zastosowanie). ZG STOP Kraków, T1 i T2. (in Polish).
[6] Esposito, A., Thrower, J. (1999). Machine Design. Delmar Publishers Inc.
[7] Murgaš, M., Pokusova, M. (2007). Graphitization inoculant for cast iron synthetic (Grafitizačné očkovadlo pre syntetickú liatinu). Proceedings of scientific papers VSB - Technical University of Ostrava (Sborník vědeckých prací Vysoké školy báňské – Technické university Ostrava), čislo 1, ročnik L, 173-178.
[8] Aleksandric, D. & Duboka, C. (2007). Fade performance prediction of automotive friction materials by means of artificial neural networks. Wear. 262, 778-790.
[9] Myshkin, N.K. (2000). Friction transfer film formation in boundary lubrication. Wear. 245, 116-124.
[10] Eriksson, M., Bergman, F. & Jacobson, S. (2002). On the nature of tribological contact in automotive brakes. Wear. 252, 26-36.
[11] Cho, M.H., Bae, E.G., Jang, H., Jeong, G., Kim, D, Choi, C. (2001). The role of raw material ingredients of brake linings on the formation of transfer film and friction characteristics. SAE paper 2001-01-3130.
[12] Kim, S.J., Cho, M.H., Cho, K.H. & Jang, H. (2007). The role of raw material ingredients of brake linings on the formation of transfer film and friction characteristics. Tribology International. 40, 15-20.
Uwagi
PL Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.
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