Analysis of causes for deformation of copper tubein rectangular mold
HAN Lun-jie1, CAO Xue-qian3, XIE Yi-kui2,4, WANG Qian1
1. Technology Center, Heilongjiang Jianlong Iron and Steel Co.,Ltd., Shuangyashan 155126, Heilongjiang,China; 2. Technology Department, East China Branch of CISRI, Huaian 223007, Jiangsu,China; 3. Steelmaking Engineering Technology Institute, MCC Capital Engineering and Research Incorporation Limited, Beijing 100176,China; 4. Material Science and Engineering,Shanghai Univeristy School, Shanghai 200444,China
Abstract：To control the deformation of rectangular crystallizer copper tube cavity in the casting process, reference is provided for optimizing copper tube design.The maximum deflection of crystallizer copper tube was calculated by the uniform load formula of simply supported beam, the thermal deformation was calculated by combining temperature gradient and thermal expansion coefficient and the changes of inner wall size and taper of copper tube under different water pressures were analyzed. The temperature field and deformation distribution in the mold were simulated by MSC Software. The analysis results show that the cooling water pressure is the main cause of copper tube deformation, the largest deformation position is in the center of the copper tube cavity and maximum deformation value 1.76 mm. The taper of the copper tube of the crystallizer increases in the upper part and decreases in the lower part. The simulation results show that the plane area of the copper tube cavity is prone to thermal stress and deformation. The deformation in the middle area is larger, and the deformation in the quarter is 72% of that in the center. Cooling water pressure and deformation is proportional to the linear relationship, and under the same pressure conditions, the copper tube wall thickness decreased 4 mm, deformation increased by 35%.
GUPTA V K, JHA P K, JAIN P K. A novel approach to predict the inclusion removal in a billet caster mold with the use of electromagnetic stirrer[J]. Journal of Manufacturing Processes,2022,83:27.
ZENG J H,GAN M J,YAN X B,et al. Mathematical modeling of heat transfer and deformation of bloom tube mold in continuous casting process[J]. Metallurgical and Materials Transactions,2020,51(1):213.
PENG L, LIANG L,TIE Z P, et al. Combined study on mold taper and corner radius in bloom continuous casting by FEM simulation and trial experiment[J]. Metals and Materials International,2019,25(6):1603.
2023, Vol. 42 
