Railway Castings, as crucial load-bearing components in railway methods, have their internal microstructure straight identifying the efficiency and repair daily life. Metallographic Evaluation, by revealing the microstructure characteristics of products, supplies a direct basis for the standard assessment of observe castings. 1.Complex ways of metallographic Examination one.1 Metallog... https://www.geto.space/post/72794_this-is-the-periodic-wear-on-the-top-surface-of-the-rail-resembling-waves-when-t.html