Analysis and optimization of quality defects of HRB400 ribbed steel bar

LI Jie; ZHANG Kun; LI Qiang; ZHANG Kang-hui; HUANG Zhu-ping

doi:10.13228/j.boyuan.issn1005-4006.20220084

PDF(2761 KB)

Continuous Casting ›› 2023, Vol. 42 ›› Issue (1) : 55-60. DOI: 10.13228/j.boyuan.issn1005-4006.20220084

Strand Quality

Analysis and optimization of quality defects of HRB400 ribbed steel bar

Author information +

History +

Abstract

Aiming at the problems of rhomboidity and crack of HRB400 continuous casting billet, it was found that quality defects of billet were mainly related to mould vibration parameters, secondary cooling system, foot roll and other factors by tracking and investigating. The rhomboidity rate of billet reduced from 1.5% to 0.1%, the rate of corner crack decreased from 3.2% to 0.6%, the proportion of intermediate crack lower than grade 0.5 increased from 8.3% to 92.6%, and the proportion of central crack lower than grade 0.5 increased from 85.0% to 100% by increasing the stroke of mould from 7.5 mm to 8.5 mm, reducing the cooling water volume of mould from 2 300 L/min to 2 100 L/min, increasing the specific water volume of secondary cooling zone from 1.30 L/kg to 1.56 L/kg, installing the mould foot roll and water baffle, regularly maintaining the nozzle, arc alignment and other measures. The billet quality is significantly improved, the rolling process runs smoothly, and the performance of finished product meet requirements.

Key words

HRB400 / rhomboidity / crack / oscillation / specific water

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

LI Jie, ZHANG Kun, LI Qiang, et al. Analysis and optimization of quality defects of HRB400 ribbed steel bar[J]. Continuous Casting, 2023, 42(1): 55-60 https://doi.org/10.13228/j.boyuan.issn1005-4006.20220084

References

[1] 周大骞, 陆恒昌, 李志峰, 等. HRB400螺纹钢的高温氧化行为及动力学[J]. 钢铁, 2022, 57(3): 108.
[2] 邓奇志. HRB400E细晶粒热轧钢筋生产工艺及品种开发[J]. 钢铁, 2016, 51(12): 53.
[3] 魏书豪, 陆恒昌, 刘腾轼, 等. 稀土对HRB400E螺纹钢低温冲击韧性的影响[J]. 中国冶金, 2022, 32(9): 16.
[4] 杨晓伟, 周云, 陈焕德,等. 钛微合金化HRB400E钢筋组织性能及强化机理[J]. 中国冶金, 2020, 30(1): 68.
[5] 康健, 于彦冲, 孟晓亮, 等. 稀土处理HRB400E钢洁净度研究[J]. 连铸, 2020(3): 38.
[6] 何赛,胡新福,侯中晓,等.螺纹钢HRB400E冷弯断裂原因分析及控制[J].河北冶金,2021(9):26.
[7] 蔡秀丽,徐焕钦,胡志伟,等.HRB400E热轧带肋钢筋黑线成因分析[J].钢铁钒钛,2021,42(2):188.
[8] 杨玉学,李年,陈金雷.HRB335/400钢筋混凝土用热轧带肋钢筋表面纵向裂纹成因分析[J].机械强度,2003 (2):190.
[9] 蔡开科.连续铸钢[M].北京:科学出版社,1991.
[10] 盛爱华,彭勇生.连铸小方坯脱方原因与预防措施[J].浙江冶金,2005(2):13.
[11] 眭志松, 康欣蕾, 韩德飞, 等. 220方低碳合金钢铸坯质量提升的实践[J]. 连铸, 2022(5): 108.
[12] 李伟, 谈正军, 程锦君, 等. 基于二冷优化的高拉速方坯质量改善及实践[J]. 连铸, 2022(2): 95.
[13] 郑原首. 三钢160 mm×160 mm连铸高拉速生产技[J]. 连铸, 2020(3): 10.
[14] 杨志刚,黄伟丽,王信威,等.低碳钢连铸板坯角部横裂的控制[J].河北冶金,2022(7):44.
[15] 刘卫东,陈洋,李鹏飞.Nb、Ti碳氮化物在超纯铁素体不锈钢铸坯中的析出规律[J].河北冶金,2022(1):26.
[16] 杜艳玲,张志扬,刘素丽,等.低碳钢酸洗板边部翘皮缺陷原因分析与控制[J].河北冶金,2021(9):48.
[17] 赵杨.中高碳钢连铸板坯中心偏析的控制[J].河北冶金,2021(8):47.
[18] 佐祥均,袁钢锦,阎建武.连铸过程中方坯脱方的原因与预防措施的研究[J].连铸,2015(5):29.
[19] 何宇明,赵正平,袁广英,等.重钢连铸方坯脱方成因和控制措施剖析[J].炼钢,2009(2):4.
[20] 崔鹏高,王克玉,梁世勇,等.方坯表面角部横裂纹成因分析及解决措施[J].钢铁研究,2005,33(2):40.
[21] 徐明利,王曙光.小方坯角部纵裂纹分析及控制[J].炼钢,2004,20(1):4.
[22] 康伟,吕志升,孙群,等.连铸坯角部裂纹控制技术研究[J].炼钢,2019,35(1):66.
[23] 李强,张康晖,邹长东,等.70钢盘条浅表层网状渗碳体缺陷原因分析及优化[J].炼钢,2020,36(6):61.
[24] 韩志强,蔡开科.连铸坯内裂纹形成条件的评述[J].钢铁研究学报,2001,13(1):68.
[25] 姚书芳,徐李军.连铸板坯内部裂纹的成因及防止措施[J].钢铁,2010,45(12):95.
[26] 徐松,周青峰,邹长东,等.高碳钢连铸小方坯表面异常振痕形成原因及控制[J].炼钢,2016,32(6):57.
[27] 王昌旭.选择结晶器振动参数的研究[J].连铸,2002 (4):1.
[28] 冯科,陈登福,廖建云.方坯连铸二冷仿真数学模型的改进性研究[J].炼钢,2006,22(3):49.
[29] 蔡开科.连铸二冷区凝固传热及冷却控制[J].河南冶金,2003,11(1):3.
[30] 纪振平,高志强.基于SVM的连铸二冷目标控制模型研究[J].沈阳理工大学学报,2018,37(1):47.
[31] 沈宏俊,张西超,方忠强,等.45钢大方坯凝固传热数值分析[J].炼钢,2015(4):47.
[32] 王德炯,焦帅,殷皓,等.GCr15钢大方坯传热凝固数值模拟[J].炼钢,2018,34(1):30.
[33] 张贯旭,杨树峰,李京社,等.方坯轴承钢连铸过程中凝固行为[J].中国冶金,2018,28(增刊):17.
[34] 冯永山,侯雨阳,成国光.70号钢连铸过程的凝固传热模型与组织研究[J].连铸,2018 (3):18.
[35] 朱立光,周建宏,王硕明,等.基于目标温度的方坯连铸二冷配水方案优化[J].炼钢,2006,22(2):34.