论文部分内容阅读
经全长淬火的钢轨,其轨头金相组织对性能有决定性的影响。淬火索氏体比回火索氏体有更高的耐磨性和疲劳强度。欲使轨头获得淬火索氏体组织,必须严格控制淬火介质的冷却速度为3°～20℃/秒。
After quenching the full length of the rail, its head metallographic structure has a decisive impact on performance. Quenched sorbite than sorbite has a higher wear resistance and fatigue strength. For the rail to obtain the hardened sorbite, quenching medium must be strictly controlled cooling rate of 3 ° ~ 20 ℃ / sec.