高速列车转向架构架用Nb-Ti微合金化钢板的研制

特殊钢 ›› 2020, Vol. 41 ›› Issue (1): 32-35.

高速列车转向架构架用Nb-Ti微合金化钢板的研制

张瑞琦, 刘志伟, 孙傲, 郭晓宏, 杨玉, 严平沅, 高磊

鞍钢集团钢铁研究院，鞍山114009

收稿日期:2019-07-05 出版日期:2020-02-01 发布日期:2022-04-19
作者简介:张瑞琦(1988-)，男，硕士(2014年东北大学)，工程师,2011 年江苏科技大学(本科)毕业,耐候钢研究。

Development of Nb-Ti Microalloying Steel Plate for Bogie Frame of High-speed Train

Zhang Ruiqi,Liu Zhiwei,Sun Ao,Guo Xiaohong,Yang Yu,Yan Pingyuan , Gao lei

Ansteel Iron and Steel Research Institute, Anshan 114009

Received:2019-07-05 Published:2020-02-01 Online:2022-04-19

摘要/Abstract

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。

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

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.

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.

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.