Railway Castings, as vital load-bearing factors in railway units, have their inside microstructure instantly pinpointing the performance and repair lifestyle. Metallographic analysis, by revealing the microstructure properties of resources, gives a immediate basis for the standard evaluation of monitor castings. one.Technical ways of metallographic analysis 1.one Metallographic analys... https://www.geto.space/post/72795_in-curved-sections-or-areas-with-frequent-braking-the-surface-of-the-rail-will-d.html