Railway Castings, as critical load-bearing elements in railway techniques, have their internal microstructure directly determining the performance and repair existence. Metallographic analysis, by revealing the microstructure characteristics of elements, gives a immediate basis for the standard assessment of monitor castings. one.Specialized ways of metallographic Evaluation one.one M... https://www.malikmobile.com/story/191998-rail-grinding-this-art-carried-out-amid-sparks-flying-quietly-safeguards-the-hea.html