Railway Castings, as key load-bearing elements in railway methods, have their internal microstructure instantly determining the performance and repair lifestyle. Metallographic Assessment, by revealing the microstructure features of resources, offers a immediate foundation for the quality evaluation of track castings. one.Technical methods of metallographic Assessment 1.one Metallogra... https://omiyou.com/post/165753_rail-grinding-this-art-carried-out-amid-sparks-flying-quietly-safeguards-the-hea.html