Railway Castings, as important load-bearing factors in railway systems, have their interior microstructure instantly determining the performance and repair daily life. Metallographic Evaluation, by revealing the microstructure traits of materials, delivers a direct foundation for the standard assessment of keep track of castings. 1.Technological methods of metallographic Assessment 1.... https://socialcreditu.com/post/9248_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html