Railway Castings, as important load-bearing factors in railway units, have their inside microstructure immediately identifying the efficiency and repair lifetime. Metallographic Examination, by revealing the microstructure qualities of materials, delivers a direct basis for the standard assessment of observe castings. 1.Complex ways of metallographic Examination one.1 Metallographic E... https://www.jointcorners.com/post/481047_rail-grinding-this-art-carried-out-amid-sparks-flying-quietly-safeguards-the-hea.html