连铸工艺生产车轴钢具有高效、经济、质量优等特点，为了满足铁道部门对高质量车轴钢坯的需求，开展了大方坯连铸工艺生产铁道车轴钢的试验研究。针对连铸生产车轴钢的技术条件要求，研究了微量元素钒在车轴钢中的作用，利用钒的析出强化，显著提高了车轴钢的力学性能指标，其强度稳定提高10%，并具有良好的塑韧性。用户加工车轴的力学性能及实物质量优良，完全满足连铸技术条件及铁道运输的发展需要。
The axle steel produced by continuous casting technology has some characteristics such as high efficiency, good economy and superior quality. In order to meet the requirements of high quality billets of axle steel by the ministry of railway,the production of axle steel for railway by bloom continuous casting technology was studied. According to the technical conditions of axle steels produced by continuous casting,the action effect of microelement vanadium in axle steel was investigated. The mechanical performance index of axle steel was significantly improved by the precipitation strengthening of vanadium. The strength stability increased by 10%. Moreover,the axle steel exhibited good plastic tough-ness. The mechanical property and the quality of manufactured axles were good,which could meet the technical condi-tions of continuous casting and the development demand of railroad transportation.
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