Railway Castings, as critical load-bearing components in railway systems, have their interior microstructure instantly determining the overall performance and repair daily life. Metallographic Evaluation, by revealing the microstructure characteristics of products, supplies a immediate basis for the standard assessment of observe castings. 1.Complex ways of metallographic Examination ... https://friendstrs.com/post/166386_rail-grinding-this-art-carried-out-amid-sparks-flying-quietly-safeguards-the-hea.html