微合金化HRB400高强度热轧钢筋的试制

特殊钢 ›› 2011, Vol. 32 ›› Issue (6): 31-33.

微合金化HRB400高强度热轧钢筋的试制

唐海燕¹，李京社¹，杨明生²，张亚斌²，郑全振²

1北京科技大学冶金与生态工程学院，北京100083；
2新兴铸管股份有限公司，武安056300

收稿日期:2011-04-06 出版日期:2011-12-01 发布日期:2022-10-18
作者简介:唐海燕(1970-),女.博士.讲师，纯净钢的工艺与理论研究

Research and Production of Hot-Rolled Microalloying HRB400 High Strength Reinforcing Steel

Tang Haiyan¹ , Li Jingshe¹ , Yang Minsheng², Zhang Yabir²， Zheng Quanzhen²

1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ；
2 Xinxing Ductile Iron Pipe Co Ltd, Wu' an 056300

Received:2011-04-06 Published:2011-12-01 Online:2022-10-18
Supported by:
国家自然科学基金项目(No51074021)资助

摘要/Abstract

摘要： HRB400高强度钢筋(%:0.19～0.25C、0.40～0.60Si、1.20～1.50Mn、≤0.040P、≤0.040S)由120 t转炉-钢包吹氩-120 mm×120 mm连铸工艺冶炼。为提高HRB400Φ12～22 mm热轧带肋钢筋的综合力学性能,冶炼时进行加5 kg/t_钢MnSiN+0.4～0.9 kg/t_钢FeV,10 kg/t_钢MnSiN+0.25～0.40 kg/t_钢FeNb和只加0.40～0.75kg/t钢VN三种微合金化工艺试验。钢坯均热温度1150～1250℃,终轧温度≥950℃,粗轧每道次压下量≥30%,精轧每道次压下量≥15%,轧后风冷、结果表明,合适的FeV或VN加入量为0.5 kg/t_钢,合适的FeNb加入量为0.3 kg/t_钢,经V或Nb微合金化后,钢中晶粒明显细化,各项性能满足标准要求。

Abstract: HRB400 high strength reinforcing steel (% ： 0. 19 ~0. 25C, 0. 40 ~0. 60Si, 1. 20 ~ 1.50Mn, ≤0.040P, ≤0. 040S) is melted by 120 t BOF-ladle argon blowing-120 mm x 120 mm billet casting process. In order to improve the comprehensive mechanical properties of Φ 12 ~22 mm ribbed bar of hot-rolled HRB4CX) steel the three kinds of microalloying process tests i. e. adding 5 kg/1 MnSiN + 0. 4 〜0. 9 kg/t FeV, 10 kg/t MnSiN + 0. 25 ~ 0. 40 kg/t FeNb and only adding 0. 40 ~0. 75 kg/t VN have been carried out during steelmaking. The pitting temperature of billet is 1 150 ~ 1 250 °C, the finishing rolling temperature for reinforcing steel bar is ≥950 °C, reduction of each pass in rough rolling ≥30% and reduction of each pass in finishing rolling ≥15%, fanning cooling after rolling. Results show that the available adding amount of FeV or VN is 0. 5 kg/t and that of FeNb is 0. 3 kg/t; with microalloying by V or Nb, the grain in steel is finer obviously and each property of reinforcing steel meets the requirement of standard.

唐海燕, 李京社, 杨明生, 张亚斌, 郑全振. 微合金化HRB400高强度热轧钢筋的试制[J]. 特殊钢, 2011, 32(6): 31-33.

Tang Haiyan , Li Jingshe , Yang Minsheng, Zhang Yabir , Zheng Quanzhen. Research and Production of Hot-Rolled Microalloying HRB400 High Strength Reinforcing Steel[J]. Special Steel, 2011, 32(6): 31-33.