The SiCp/Al-alloy composite front brake rotors designed for SHANGHAI SANTANA cars were prepared by semi-solid stirring+liquid forging process. The properties of the composite rotors were examined. The composite brake rotors were subjected to dynamometer tests on a SCHENCK brake testing system, referring to TL110 standard of VOLKSWAGEN Company. The friction coefficient and thermal response during fade testing and the wear performance of the composite rotors were studied as the function of various parameters, such as braking pressures, initial speeds, initial temperatures, torque and decelerations, and compared with that of conventional cast iron rotors. The results showed that the properties of SiCp/Al-alloy composite rotors can achieve the requirements of commercial cast iron rotors. The results also suggested that the friction coefficients of composite rotors under different braking conditions are within the deviation band specified by the TL110 standard, and the temperature rise of the composite rotors at the end of each fade stop is lower than that of the cast iron rotors. The wear resistance of composite rotors was higher than that of cast iron rotors. The friction and wear mechanism are analyzed.
Study on the SiCp/Al-alloy composite automotive brake rotors
Untersuchung an den Rotoren von Kraftfahrzeugbremsen aus SiC<sub>p</sub>/Al-Legierung-Verbundwerkstoff
Acta Metallurgica Sinica (English Letters) ; 13 , 4 ; 974-980
2000
7 Seiten, 7 Bilder, 2 Tabellen, 7 Quellen
Aufsatz (Zeitschrift)
Englisch
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