21世纪初铁路运输开始了全球复兴。在运输能力方面,铁路是陆地上最环保、最节能的运输方式。为了充分发挥铁路运输的潜力,铁路运输正向高速化、重载化方向发展。钢轨是轨道结构的重要部件,钢轨质量的优劣直接关系到铁路运营的安全与效率。列车速度和轴载荷的不断升级对重轨及道岔的性能也提出了越来越高的要求。为了适应铁路建设发展的需要,近十年来我国重轨行业不断改进生产工艺,淘汰落后设备,开发新品种。 The beginning of the 21st century began a global revival of rail transport. In terms of transport capacity, railways are the most environmentally friendly and energy-efficient modes of transport on land. In order to give full play to the potential of railway transport, rail transport is developing in the direction of high-speed and heavy-load operation. Rail is an important part of the track structure, the quality of the rail directly related to the safety and efficiency of railway operations. The continuous upgrading of train speed and axle load also put forward higher and higher requirements on the performance of heavy rail and turnout. In order to meet the needs of railway construction and development, the heavy rail industry in China has continuously improved its production technology in the past decade, eliminated backward equipment and developed new varieties.