Railway Castings, as vital load-bearing parts in railway programs, have their internal microstructure straight figuring out the performance and repair existence. Metallographic analysis, by revealing the microstructure properties of resources, offers a immediate basis for the quality evaluation of monitor castings. one.Technical ways of metallographic analysis 1.one Metallographic ana... https://www.vevioz.com/post/1839292_this-is-the-periodic-wear-on-the-top-surface-of-the-rail-resembling-waves-when-t.html