Railway Castings, as important load-bearing parts in railway programs, have their inner microstructure right deciding the performance and repair lifestyle. Metallographic analysis, by revealing the microstructure features of resources, offers a immediate foundation for the quality evaluation of track castings. one.Technical methods of metallographic Assessment 1.one Metallographic ana... https://vherso.com/post/568829_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html