|
|
Physical simulation study on the starting height and control of 100 t ladle at the end of casting |
KONG Fan-jie1, JIANG You-hong2, TANG Ping2, QING Peng-peng2 |
1. Nanjing iron and steel Co., Ltd., Nanjing 210035, Jiangsu, China;
2. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China |
|
|
Abstract According to the principle of similarity, a 1∶3 ladle physical model was established for the control of 100 t ladle casting in a steel mill. The hydraulics simulation method was used to study the lathe height and production process conditions. The relationship was compared with the judgment of the residual steel quantity predicted by the actual production of the steel mill. The results show that with the increase of the amount of steel, the starting and through height of the vortex first decrease and then increase. The residual steel quantity corresponding to the through-through height obtained by the simulation experiment is equivalent to the prediction and judgment value of slag in actual production. Casting process, blowing Ar flow only within a certain range, with the increase of blowing Ar flow, vortex height decreased, and the critical blow to wear height increases, there is proper blowing Ar flow, puckering blowing Ar appropriate flow rate of 18.0 L/min, the corresponding spin height is 42.6 mm, the residual amount of steel 4.9 t, double orifice blowing Ar appropriate single-hole flow of 17.4 L/min, the corresponding spin height is 40.3 mm, 4.6 t the residual amount of steel; Single-hole Ar blowing effect is slightly worse than double-hole Ar blowing effect.
|
Received: 09 September 2019
|
|
|
|
[1] |
李海峰. 自由表面旋涡的机制研究[D].上海:上海大学,2009.
|
[2] |
黄晔,叶树峰,苏天森,等.浇注过程的防下渣技术[J].江西冶金,1999(6):1.
|
[3] |
李敬想,唐萍,潘银虎,等.精炼渣成分与轴承钢夹杂物类型关系热力学分析[J].工程科学学报,2016,38(S1):195.
|
[4] |
刘咏杭. 环出钢口吹氩控制钢包下渣新工艺实验研究[D]. 沈阳,东北大学,2013:31.
|
[5] |
蔺瑞. 钢包浇注过程中旋涡下渣的产生及控制[D]. 沈阳,东北大学,2012:39.
|
[6] |
LIN R,YANZ G,JING Y U.Physical modeling test of vortex during teeming from ladle[J]. Journal of Northeastern University, 2010, 31(9):1287.
|
[7] |
屈天鹏,郭瑞琪,郝月莹,等.连铸钢包浇注过程中旋涡的形成机制[J].钢铁研究学报,2016,28(8):22.
|
[8] |
ZHANG S,ZHU M.New process with argon injected into ladle around the tapping hole for controlling slag carry-over during continuous casting ladle[J]. Metals, 2018, 8(8):624.
|
[9] |
周秀丽,郝月莹,屈天鹏.钢包浇注过程中自由表面旋涡流动行为的物理模拟研究[J].工业加热,2017,46(2):33.
|
[10] |
LIN R,YAN Z G,LIU T,et al.Water modelling on the effect of trapezoidal nozzle on vortex during teeming in ladle[J]. Advanced Materials Research, 2011, 295.
|
[11] |
Frank S G,Susan J G,Marc V,et al.The characteristics of free surface vortices at low-head hydropower intakes[J],Journal of the Hydraulic Engineering,2013:1.
|
[12] |
陈云良. 进水口前立轴旋涡水力特性的研究[D]. 四川,四川大学,2006.
|
[13] |
卢永金,郭子中.进水口旋涡研究成果综述[J].河海大学科技情报,1988(3):16.
|
[14] |
郑双凌,马吉明,陈浩波,等.进水口旋涡特性及临界淹没水深的研究进展[J].南水北调与水利科技,2010,8(5):129.
|
[15] |
唐海燕,梁永昌.钢包浇注末期汇流旋涡形成机制及影响因素[J].金属学报,2016,52(5):519.
|
[1] |
Yan-zhu Huo, Hua-zhi Gu, Juan Yang, Ao Huang, Zheng Ma. Thickness monitoring and discontinuous degradation mechanism of wear lining refractories for refining ladle[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(7): 1110-1118. |
[2] |
CHENG Jinqi, ZHANG Liqiang, FU Kaixuan, ZHAO Aonan. Research and application of automatic control system of argon blowing at ladle shroud[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(6): 562-570. |
[3] |
XIAO Zhen, ZHENG Shuguo, ZHU Miaoyong. Controlling slag carryover in teeming ladle by argon blowing process with four plugs installed around tapping hole[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(2): 133-141. |
[4] |
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. |
[5] |
ZU Lin1,2, YANG Jie1, KONG Lingzhong1,2, XU Dong1,2, ZHENG Bing1,2, GUO Longxin3. Research status of reaction between ladle refractories and molten steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(1): 12-20. |
[6] |
WU Wei-qin, DONG Jian-feng, WEI Guang-sheng. Physical simulation of bottom blowing argon in 150 t ladle[J]. CONTINUOUS CASTING, 2022, 41(1): 45-48. |
|
|
|
|