Railway Castings, as important load-bearing elements in railway devices, have their interior microstructure right determining the functionality and service daily life. Metallographic Investigation, by revealing the microstructure features of products, provides a immediate basis for the quality evaluation of observe castings. 1.Technical ways of metallographic Investigation 1.one Metal... https://www.scoop.it/topic/okok0972/p/4168349816/2025/10/10/rail-grinding