Railway Castings, as key load-bearing factors in railway techniques, have their inside microstructure straight analyzing the efficiency and service existence. Metallographic Examination, by revealing the microstructure attributes of elements, delivers a immediate basis for the quality evaluation of observe castings. 1.Technical ways of metallographic Investigation 1.one Metallographic... https://www.geto.space/post/72623_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html