Estudo comparativo do aço ABNT 1020, ferro fundido nodular e ferro fundido vermicular, na eficiência de frenagem utilizando ensaios tribológicos

Abstract

The mini Baja vehicles developed by teams of engineering students present many challenges and among these the brake system and the materials of its manufacture. In this work, four materials are tested through abrasive tests using an abrasive (Drill Pipe) designed and built in the Laboratory of Technology in Friction and Wear of UFU. The materials chosen were two ABNT 1020 Steels, Vermicular Cast Iron and Ferritic Nodular Cast Iron. The materials were characterized metallographically, the hardness was measured and tested by sliding against a friction body specially mounted in dry condition and immersed in water. The coefficients of friction and the wear rates were obtained. It was not possible to identify the best material due to the high dispersion of the results.