|
|
Quality improvement and practice of high speed continuous casting of billet based on secondary cooling optimization |
LI Wei1, TAN Zheng-jun1, CHENG Jin-jun2, LIN Qian2, ZHANG Li-qiang2 |
1. Echeng Steel Co., Ltd., Baowu Group, Ezhou 436000, Hubei, China; 2. School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan 243032,Anhui, China |
|
|
Abstract In order to increase casting speed, speed up production, ensure slab quality and improve production efficiency, the secondary cooling system of 7-machine 7-billet caster in a factory was optimized, and the secondary cooling water distribution model was studied. According to the main steel composition, the length of each zone in the secondary cooling zone, the nozzle type and other factors, the model is optimized. By optimizing the water distribution parameters, the billet quality is ensured and the dynamic control is realized. Through the secondary cooling compensation water transformation, process temperature control, de-square control, billet internal quality control and other measures, the yield of the continuous casting plant increased to 278.5 t/h, increased by 8.30%, and the low-time first-class yield was more than 95.14%.
|
Received: 14 January 2022
|
|
|
|
[1] |
王先勇,刘彭涛.小方坯高速连铸关键技术研究[J].连铸,2015 (6):1.
|
[2] |
朱立光,郭志红.高速连铸技术研究[J].河北冶金,2021(6):1.
|
[3] |
XIE Z, SHAO Q, ZHANG G,et al. Process and quality of M2 HSS 160 mm×160 mm casting billet by ESR fast withdrawing process[J]. Special Steel, 2019,40(1):47.
|
[4] |
朱苗勇.新一代高效连铸技术发展思考[J].钢铁,2019,54(8):21.
|
[5] |
朱苗勇.高拉速连铸过程传输行为特征及关键技术探析[J].钢铁,2021,56(7):1.
|
[6] |
谢长川,李富帅,钱亮,等.高拉速小方坯铸机关键技术的研发及应用[J].炼钢, 2020, 36(2): 59.
|
[7] |
SHENG Y P, LI J Q, SUN Q N. Design on high drawing speed mould for billet continuous casting[J]. Heavy Machinery, 2005(1):5.
|
[8] |
孙坤.小方坯连铸实现高拉速的技术措施解析[J].中国金属通报,2017(12):36.
|
[9] |
Ali N, Zhang L, Zhou H, et al. Investigation on internal crack defects in medium carbon steel by soft reduction[J]. Materials Research, 2021, 24(3):55.
|
[10] |
李峰,陈杰.二冷喷嘴间距对连铸方坯中间裂纹的影响[J].连铸,2016(2):75.
|
[11] |
闫卫兵,郭旭东.宣钢小方坯连铸应用轻压下技术试验[J].河北冶金,2018(2):5.
|
[12] |
Ali N, Zhang L Q,Zhou H W,et al. Elucidation of void defects by soft reduction in medium carbon steel via EBSD and X-ray computed tomography[J]. Materials and Design, 2021, 209: 109978.
|
[13] |
林鹏, 张洪才, 马建超, 等. 65Mn方坯典型质量缺陷控制工艺研究[J].连铸, 2018(4):5.
|
[14] |
康吉柏,王卫领,罗腾飞,等. 20CrMnTi钢160 mm×160 mm方坯内部质量控制[J].钢铁,2021,56(2):82.
|
[15] |
Ali N,Zhang L,Zhou H, et al. Effect of soft reduction technique on microstructure and toughness of medium carbon steel[J]. Materials Today Communications, 2021, 26:102130.
|
[16] |
李颇,范宇静,张程,等.拉速波动对GCr15轴承钢250 mm×280 mm连铸坯内部质量的影响[J].特殊钢,2017,38(5):22.
|
[17] |
王海群,张翔,谷学静.关于连铸二次冷却水量优化预测仿真[J].计算机仿真,2020,37(5):136.
|
[18] |
SHUAI Y,SUN L,GONG H, et al. 3D Thermal simulation of extra thick slab in continuous casting process[J]. Foundry Technology, 2019,40(11):1144.
|
[19] |
周林,唐瑞尹,周伟.连铸机二冷水模型应用研究[J].河北工业科技,2018,35(2):134.
|
[20] |
陈伟,和保民,郭高翔,等.Q235B连铸二冷配水分析[J].铸造技术,2019,40(2):213.
|
[1] |
ZHAN Mei-zhu, WANG Sheng-dong, ZHANG Li-feng, CHEN Wei. Effect of casting speed on inclusions in continuous casting slab of peritectic tinplate steel[J]. CONTINUOUS CASTING, 2022, 41(3): 39-44. |
[2] |
WU Xu-feng, ZHANG Cai-gui, WANG De-yong. Effect slag modification on vortex entrapment in ladle[J]. CONTINUOUS CASTING, 2022, 41(2): 41-46. |
[3] |
ZHANG Hao-hao, WU Jia-lu, LONG Mu-jun, GUO Wei, YANG Xiao-dong, CHEN Deng-fu. Evolution of micron Ti(Cx,N1-x) in TSCR process of ultra-high strength hot stamping steel[J]. CONTINUOUS CASTING, 2022, 41(2): 47-54. |
[4] |
DENG Yong, YANG Li-bin, WANG Cheng-yi. Application of high-speed continuous casting technology for low carbon steel slab in Masteel[J]. CONTINUOUS CASTING, 2022, 41(1): 72-77. |
[5] |
ZHU Miao-yong. A study of transport phenomena and key technologies for high-speed continuous casting of steel[J]. Iron and Steel, 2021, 56(7): 1-12. |
[6] |
ZHU Li-guang, ZHANG Li-min, WANG Xing-juan, ZHANG Cai-jun, HAN Yi-hua, SUN Li-gen. Physical experiment and numerical simulation of flow field on funnel mold surface[J]. CONTINUOUS CASTING, 2021, 40(6): 2-8. |
|
|
|
|