Railway Castings, as important load-bearing parts in railway programs, have their inner microstructure straight identifying the effectiveness and service everyday living. Metallographic Investigation, by revealing the microstructure attributes of supplies, presents a direct foundation for the quality evaluation of track castings. 1.Technological methods of metallographic Investigation... https://www.geto.space/post/72623_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html