Railway Castings, as important load-bearing parts in railway methods, have their interior microstructure right figuring out the performance and service everyday living. Metallographic Evaluation, by revealing the microstructure attributes of products, offers a direct basis for the quality assessment of track castings. 1.Technical methods of metallographic Evaluation 1.1 Metallographic... https://www.bondhuplus.com/post/954416_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html