Railway Castings, as important load-bearing components in railway systems, have their interior microstructure directly determining the efficiency and repair lifetime. Metallographic Examination, by revealing the microstructure qualities of materials, delivers a direct foundation for the standard assessment of keep track of castings. 1.Complex ways of metallographic Examination one.1 M... https://www.dostally.com/post/344382_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html