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.
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2020, Vol. 39 
