Research Of Pull Casting Process Of Steel Sheet

Steel sheet mainly refers to the steel plate which is less than 4 mm thick, which widely used in aerospace, vehicle manufacturing, machinery manufacturing and other fields. Nowadays, the main production process of steel sheet is cast bar. Finally, in order to obtain a good performance, most products need to be rolled. Including Thin slab casting and rolling technology, Double-stick strip casting technology, and ohno continuous casting technology, etc. These technologies have their own advantages and disadvantages, among them, thin slab casting and rolling technology and double-stick strip casting technology have the same shortcomings, just as the high cost and the lower slab surface quality.Pull casting of steel sheet is one of Near-net shape casting technology, the principle is obtain the solidification of molten steel with crystal, then, pull the billet with roller in a certain speed. Final slab quality would be close to the requirements of product performance by the way that control the solidification and cooling of slab, and reduce the friction between slab surface and the inner wall of the mold. The research of the paper is to simulate the temperature of the pull casting process of steel sheet. Control the temperature of slab which be pull out of the mold and left the secondary cooling zone through regulate the pouring temperature and casting speed, ultimately improve the quality of the slab. The following are the main contents and the consequence of this paper:1. The paper has studied the temperature of Steel sheet continuous casting with the applications of the finite element analysis software—ANSYS. Mainly simulate the temperature of the casting process of steel sheet and the effect with different Super heat,withdrawal speed,heat flux and the convection on the temperature field. Compare of the experimental results and simulation results, optimization of parameters which influent the temperature. Finally, obtain the Super heat,withdrawal speed,heat flux and the convection match with the experimental results.2. By comparing the simulating results and the experimental results, identified the range of heat flux is 0.89～0.912 MW/m2, and the range of convection is 5.7～6.2 KW/(m2·℃).3. Through the analysis of simulation results, identified the scope of super heat and withdrawal speed. Finally obtained the results that the speed should less than 12 m/min when super heat is 20℃, and the withdrawal speed should not more than 11.1 m/min when super heat is 35℃.