Railway Castings, as critical load-bearing factors in railway units, have their inside microstructure immediately deciding the efficiency and repair lifetime. Metallographic Examination, by revealing the microstructure traits of products, delivers a direct foundation for the standard assessment of keep track of castings. 1.Complex methods of metallographic Examination one.1 Metallogra... https://expressafrica.net/post/400447_in-curved-sections-or-areas-with-frequent-braking-the-surface-of-the-rail-will-d.html