Railway Castings, as critical load-bearing parts in railway programs, have their inner microstructure straight identifying the efficiency and repair lifetime. Metallographic Examination, by revealing the microstructure qualities of materials, delivers a direct basis for the standard assessment of keep track of castings. 1.Complex ways of metallographic Examination one.1 Metallographic... http://www.mysportsgo.com/profile/okok0972/action_id/1513133/show_comments/1