Railway Castings, as critical load-bearing parts in railway techniques, have their internal microstructure directly determining the overall performance and repair daily life. Metallographic Evaluation, by revealing the microstructure traits of materials, delivers a direct foundation for the standard assessment of keep track of castings. 1.Complex methods of metallographic Investigatio... https://padlet.com/okok0972149980/okok093-p57jo614mu84dt15/wish/v3w8ZwgzRA6gZN52