Railway Castings, as crucial load-bearing parts in railway programs, have their inner microstructure straight identifying the efficiency and repair lifetime. Metallographic Examination, by revealing the microstructure traits of materials, delivers a direct foundation for the standard assessment of keep track of castings. 1.Complex methods of metallographic Investigation 1.1 Metallogra... https://500px.com/photo/1117471507/rail-joint-bar-by-okok-okok