Railway Castings, as crucial load-bearing elements in railway techniques, have their internal microstructure straight identifying the functionality and service everyday living. Metallographic Investigation, by revealing the microstructure attributes of components, provides a immediate foundation for the quality evaluation of track castings. one.Technical methods of metallographic Asse... https://expressafrica.net/post/400447_in-curved-sections-or-areas-with-frequent-braking-the-surface-of-the-rail-will-d.html