Development and Practice of Nb-Ti Microalloying 750L Beam Steel by 120 t BOF-LF-CC Slab-8 mm Plate Flowsheet
特殊钢2021年42卷第6期 页码:43-46
作者机构:
1. 日照钢铁控股集团有限公司1 钢铁研究发展处
2. 冶金技术处,日照,276800
作者简介:
[
"徐正彪(1986-),男,硕士(东北大学),工程师,热轧带钢、H型钢产品的开发。"
]
基金信息:
DOI:
中图分类号:
收稿:2021-04-01,
网络首发:2022-01-03,
纸质出版:2021-01-03
稿件说明:
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徐正彪, 王延苹, 刘启森, 等. 120 t BOF-LF-CC板坯-8 mm板流程Nb-Ti微合金化大梁钢750L的开发与实践[J]. 特殊钢, 2021,42(6):43-46.
徐正彪, 王延苹, 刘启森, et al. Development and Practice of Nb-Ti Microalloying 750L Beam Steel by 120 t BOF-LF-CC Slab-8 mm Plate Flowsheet[J]. Special Steel, 2021, 42(6): 43-46.
徐正彪, 王延苹, 刘启森, 等. 120 t BOF-LF-CC板坯-8 mm板流程Nb-Ti微合金化大梁钢750L的开发与实践[J]. 特殊钢, 2021,42(6):43-46.DOI:
徐正彪, 王延苹, 刘启森, et al. Development and Practice of Nb-Ti Microalloying 750L Beam Steel by 120 t BOF-LF-CC Slab-8 mm Plate Flowsheet[J]. Special Steel, 2021, 42(6): 43-46.DOI:
By 120 t converter-LF refining-continuous casting-controlled rolling and cooling process
the 750L (Rm≥ 750 MPa)beam steel of 8 mm high strength automobile is succes fully developed. The results show that through 750L steel Nb-Ti composite microalloying(/%:0.074C
0. 11Si
1.51Mn
0.020P
0.002S
0.042Als
0.033Nb
0. 109Ti)
combined with control rolling and cooling(finish rolling reduction≥40%)
that of produced 750L steel strip
the tensile strength 782~810 MPa
elongation≥17.5%
grain size11.5~12.5 rating and impact energy ≥90 J
all technical indexes satisfy the requirements of standard.