Railway Castings, as vital load-bearing factors in railway units, have their interior microstructure specifically pinpointing the performance and repair existence. Metallographic Evaluation, by revealing the microstructure traits of products, delivers a direct foundation for the standard assessment of keep track of castings. 1.Technological methods of metallographic Investigation 1.1 ... https://followingbook.com/post/557446_rail-grinding-this-art-carried-out-amid-sparks-flying-quietly-safeguards-the-hea.html