Railway Castings, as critical load-bearing factors in railway systems, have their interior microstructure directly determining the performance and repair lifestyle. Metallographic analysis, by revealing the microstructure features of components, offers a immediate foundation for the quality evaluation of monitor castings. one.Technical methods of metallographic analysis 1.one Metallog... http://myworldgo.com/profile/okok0972/action_id/3399808/show_comments/1