Railway Castings, as crucial load-bearing elements in railway programs, have their inner microstructure directly determining the performance and repair existence. Metallographic analysis, by revealing the microstructure properties of elements, gives a immediate basis for the quality evaluation of monitor castings. one.Technical methods of metallographic analysis 1.one Metallographic a... https://social.kubo.chat/post/239994_rail-grinding-this-art-carried-out-amid-sparks-flying-quietly-safeguards-the-hea.html