The effects of phosphorus on the friction, wear and characteristics of cast iron brake blocks have been studied on a full-scale dynamometer. Three inertial loads were investigated which typified a coach, multiple unit and locomotive. Eight different phosphorus contents were tested between 0.05 % and 7 %. High phosphorus levels were usually found to increase the coefficient of friction and decrease the wear rate and spark emission. Mechanisms of braking and wear are explained qualitatively in terms of hot spot formation and heat re-distribution through the melting of iron phosphide. Some aspects of service experience with high phosphorus blocks are described with reference to cracking, insert design and the economics of service life improvements.


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    Title :

    The effect of phosphorus in cast iron brake blocks


    Additional title:

    Die Wirkung von Phosphor in gusseisernen Bremsbloecken


    Contributors:


    Publication date :

    1979


    Size :

    16 Seiten, 8 Bilder, 5 Tabellen, 4 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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