美国对废旧钢轨的再生应用铁路钢轨是一种优质钢材，其材料组织致密，晶粒微细，含炭量高，力学性能优异，并且耐磨性好。当钢轨投入长期运用之后，由于轨道与车轮间的摩擦磨损，或者裂损，总有一天会报废。然而，钢轨报废后仍保持了新钢轨的潜在本质，其结构丝毫不变。过... The United States on the regeneration of scrap rails Rail is a high-quality steel, the material dense, fine grain, high carbon content, excellent mechanical properties, and good wear resistance. When the rail put into long-term use, due to friction between the track and the wheel wear and tear, or crack, will one day be scrapped. However, the rail still retains the potential nature of the new rail after its scrap, and its structure remains unchanged. Too ...