چكيده به لاتين
In the present study, the effect of graphite morphology on the wear behavior of cast iron brake shoe is investigated using pin-disc method. Gray cast iron is used for economic reasons as well as its special properties in various industries, especially transportation and in wear applications. To investigate the wear properties, wear discs were made of gray, compact and spherical cast iron specimens and abrasive pins of hardened steel (AISI 52100). The applied vertical forces were five forces of 20, 30, 40, 50, 60 N, constant slip velocity of 0.11 m / s and slip path length of 1000 m. SEM images were prepared from the abrasive cuts, worn surfaces and cross-sectional area of gray cast iron samples and their elemental analysis was evaluated by EDS.The results show that samples of gray cast iron under vertical forces up to 50 N used in this study have better abrasion resistance than the other two samples, however at 60 N the compressed iron has the best abrasion resistance compared to the other two samples. Is. According to the results, the dominant wear mechanism is different according to the applied force as well as the graphite morphology, which is reported in more detail in the thesis.
