钢轨支承着飞奔而沉重的列车。因而钢轨性能的好坏不仅影响铁路运输的经济效益,而且关系着旅客生命的安全。近年来,列车速度不断提高,用户对钢轨可靠性和使用寿命的要求也越来越高。为此,许多钢铁企业采取多种措施提高钢轨的质量。 1.用万能轧机轧制钢轨。万能孔型可使钢轨整个横断面的金属都得到很好的变形,并便于消除内 The rail supports the heavy and flying train. Therefore, the performance of the rail will not only affect the economic benefits of railway transport, but also the safety of passengers’ lives. In recent years, the train speed continues to increase, the user requirements for rail reliability and service life are also getting higher and higher. To this end, many steel companies to take various measures to improve the quality of the rail. 1. With universal mill rolling rails. Universal hole allows the rail cross-section of the metal are well deformed, and easy to eliminate