| 高速列车转向架构架用Nb-Ti微合金化钢板的研制 |
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| 引用本文： | 张瑞琦,刘志伟,孙傲,郭晓宏,杨玉,严平沅,高磊. 高速列车转向架构架用Nb-Ti微合金化钢板的研制[J]. 特殊钢, 2020, 41(1): 32-35 |
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| 作者姓名： | 张瑞琦 刘志伟 孙傲 郭晓宏 杨玉 严平沅 高磊 |
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| 作者单位： | 鞍钢集团钢铁研究院，鞍山114009 |
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| 基金项目： | 十三五国家重点研发计划(2017YFB0304600)资助； |
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| 摘 要： | 通过铁水预处理-260 t BOF-LF-RH-170mm板坯连铸-轧制流程,结合相应的控轧控冷工艺终轧850℃快冷至720℃空冷,成功研制12mm高速列车转向架构架用钢板(/%:0.09C,0.28Si,1.12Mn,0.020P,0.006S,0.58Cr,0.25Ni,0.32Cu,0.045Nb,0.030Ti),低温韧性优异(-60℃冲击功166～255 J),各项指标满足YB/T 4684-2018要求;显微组织为大量多边形铁素体和少量珠光体;钢板耐大气腐蚀指数I为6.3～6.7,在72 h周期浸润腐蚀试验中相对于Q345B的腐蚀速率为54.7%,锈层表面致密,耐大气腐蚀性能良好。
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| 关 键 词： | 高速列车转向架构架用钢 低温韧性 周期浸润 耐大气腐蚀 |
| 收稿时间： | 2019-07-05 |
Development of Nb-Ti Microalloying Steel Plate for Bogie Frame of High-speed Train |
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| Zhang Ruiqi,Liu Zhiwei,Sun Ao,Guo Xiaohong,Yang Yu,Yan Pingyuan,Gao lei. Development of Nb-Ti Microalloying Steel Plate for Bogie Frame of High-speed Train[J]. Special Steel, 2020, 41(1): 32-35 |
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| Authors: | Zhang Ruiqi Liu Zhiwei Sun Ao Guo Xiaohong Yang Yu Yan Pingyuan Gao lei |
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| Affiliation: | Ansteel Iron and Steel Research Institute, Anshan 114009 |
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| Abstract: | The 12 mm steel plate (0.09C,0.28Si, 1.12Mn,0.020P,0.006S,0.58Cr,0.25Ni,0.32Cu,0.045Nb, 0.030Ti) for the bogie frame of high-speed train was successfully developed by hot metal pretreatment -260 t BOF-LF-RH- 170 mm slab casting-rolling process and TMCP (finished rolling at 850℃ fast cooling to 720℃ ,air cooling). It shows excellent low-temperature impact toughness (impact energy at -60℃ 166 ~ 255 J) , and all properties meets the requirements of YB/T 4684-2018. The microstructure consists of a large amount of polygonal ferrite and a small amount of pearlite. The atmospheric corrosion resistance index I is 6.3 ~6.7,and the relative corrosion rate of the steel plate is 54.7% com¬pared with Q345B by 72 h periodic alternate immersion and dry corrosion test. The surface of the rust layer is very dense. The atmospheric corrosion resistance of the steel plate is excellent. |
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