نعلات لجام جديدة للسكك الحديدية

This search introduces new model of brake shoes for railway rolling stocks and locomotive tracks (locomotives, passengers wagons and cargos). This new model seeks to graphite white iron-cast, which means treating it thermally until cementite decomposes. It allows obtaining a new crystalline structure of cast, which has high resistance against wearing and heat cracks, increases the life service of break shoes, and increases safety factor on railways. The empirical results of friction coefficient, obtained from using this new kind of break shoes, were compared with arithmetic values obtained from approved mathematical relations, and it shows that this kind of brake shoes can be used on railway system.