Railway Castings, as important load-bearing components in railway units, have their inside microstructure right deciding the effectiveness and service everyday living. Metallographic Investigation, by revealing the microstructure attributes of supplies, presents a direct foundation for the quality assessment of keep track of castings. 1.Technological methods of metallographic Investig... https://social.kubo.chat/post/240073_in-curved-sections-or-areas-with-frequent-braking-the-surface-of-the-rail-will-d.html