Prestressed concrete sleeper reinforcement raw material hot-rolled wire rod and preparation method thereof

The invention discloses a prestressed concrete sleeper reinforcement raw material hot-rolled wire rod and a preparation method, and belongs to the technical field of metallurgy and controlled cooling processes. The hot-rolled wire rod comprises the following chemical components in percentage by weight: 0.18-0.22% of C, 0.25-0.35% of Si, 0.60-0.70% of Mn, less than or equal to 0.035% of P, less than or equal to 0.035% of S, less than or equal to 0.20% of Ni, less than or equal to 0.20% of Cr, less than or equal to 0.20% of Cu, less than or equal to 0.0080% of O, less than or equal to 0.0060% of N and the balance of iron and inevitable impurities. The tensile strength of the hot-rolled wire rod is 500-550MPa, and the percentage elongation after fracture is not less than 30%. In a bending test (cold bending test is 180 degrees, and the bending center diameter is 1.0 time of the sample diameter), no crack exists, and the good mechanical property is achieved. 本发明公开了一种预应力混凝土轨枕配筋原料热轧盘条及制备方法，属于冶金、控制控冷工艺技术领域。所述热轧盘条的化学