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Manufacturing method of tunnel environment corrosion resistant heat treatment steel rail
The invention discloses a production method of a heat-treated corrosion-resistant steel rail. The method comprises the following steps: smelting and continuously casting a steel billet; slowly cooling the casting blank; the steel billet is heated, and the total heating time is designed to be larger than or equal to 3.5 hours; the initial rolling temperature of the steel rail is controlled to be 1080-1150 DEG C, and the final rolling temperature is 960-940 DEG C; heat treatment is carried out after rolling, and the cooling speed is 2.3-2.6 DEG C/s. The Brinell hardness of the manufactured steel rail is larger than 340 (HBW), the tensile strength is larger than 1180 (Rm/MPa), and the steel rail has high strength and tunnel corrosion resistance.
本发明公开了一种热处理耐腐蚀钢轨的生产方法，该方法包括以下步骤：钢坯冶炼及连铸；铸坯缓冷；对钢坯进行加热，设计总加热时间≥3.5小时；钢轨开轧制温度控制在1080～1150℃，终轧温度960～940℃；轧后进行热处理，冷却速度2.3～2.6℃/s。本发明制造的钢轨布氏硬度大于340(HBW)，抗拉强度大于1180(Rm/MPa)，钢轨具有高强度和耐隧道腐蚀性能。
Manufacturing method of tunnel environment corrosion resistant heat treatment steel rail
The invention discloses a production method of a heat-treated corrosion-resistant steel rail. The method comprises the following steps: smelting and continuously casting a steel billet; slowly cooling the casting blank; the steel billet is heated, and the total heating time is designed to be larger than or equal to 3.5 hours; the initial rolling temperature of the steel rail is controlled to be 1080-1150 DEG C, and the final rolling temperature is 960-940 DEG C; heat treatment is carried out after rolling, and the cooling speed is 2.3-2.6 DEG C/s. The Brinell hardness of the manufactured steel rail is larger than 340 (HBW), the tensile strength is larger than 1180 (Rm/MPa), and the steel rail has high strength and tunnel corrosion resistance.
本发明公开了一种热处理耐腐蚀钢轨的生产方法，该方法包括以下步骤：钢坯冶炼及连铸；铸坯缓冷；对钢坯进行加热，设计总加热时间≥3.5小时；钢轨开轧制温度控制在1080～1150℃，终轧温度960～940℃；轧后进行热处理，冷却速度2.3～2.6℃/s。本发明制造的钢轨布氏硬度大于340(HBW)，抗拉强度大于1180(Rm/MPa)，钢轨具有高强度和耐隧道腐蚀性能。
Manufacturing method of tunnel environment corrosion resistant heat treatment steel rail
一种耐隧道环境腐蚀热处理钢轨制造方法
ZHENG RUI (author) / LIANG ZHENGWEI (author) / BIAN YING (author) / SU HANG (author)
2023-03-21
Patent
Electronic Resource
Chinese
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