Railway Castings, as key load-bearing factors in railway systems, have their interior microstructure specifically pinpointing the general performance and repair lifestyle. Metallographic analysis, by revealing the microstructure characteristics of elements, gives a immediate basis for the standard assessment of observe castings. 1.Complex ways of metallographic Examination one.one Met... https://www.vevioz.com/post/1839292_this-is-the-periodic-wear-on-the-top-surface-of-the-rail-resembling-waves-when-t.html