Study Of Solidification Heat Transfer Progress And Bulging Deformation For Φ600mm Super-Large Bloom

Round billets can be used for seamless steel tubes, ring forgings, high-speedlocomotive wheels and other products by providing high-quality steel, and its superiorityis increasingly significant. With the requirements of increasing round billet’s size, it isnecessary to make appropriate changes for production conditions of the congtiniuouscasting ang to improve the quality of round billet. The temperature distribution in the slabsolidification heat transfer process is the foundation of slab quality research. In continuouscasting process, the bulging phenomenon is an important factor of the decline in theproduction and the quality of slab caster. Large drum magnanimous even cause a breakout,the interruption of the continuous casting process, which burning the equipment andresulting in significant losses.The object of study of this article is the the Φ600mm King round billet continuouscasting process. The slab in the temperature of the heat transfer in the mold and thesecondary cooling zone was simulated by useing the ANSYS finite element software.And the slab defects bulging deformation simulation analysis is based on the slabtemperature field simulation results.In this paper, the major elements as follow:(1) Through the reasonable assumptions and simplifications of the heat transferprocess the solidification of the Φ600King round billet, a reliable mathematical modeland the parameters of the thermal properties was established. The strand solidification heattransfer process was analysed by using two-dimensional non-steady-state.(2) The ANSYS finite element software was adopted to simulate solidification heattransfer process of King Φ600mm round billet.Further. By varying the casting speed, thecasting temperature and the than water, the changes was simulated in the whole process ofcontinuous casting. The simulation results were used to compare and analysis.(3) In the continuous casting process, ferrostatic pressure cause the slab bulgingdeformation which will result in the slab cracks.Based on the high-temperature creepproperties of the slab, the round billet Φ600King bulging deformation has been analyzed by using the elastic-plastic creep finite element. At later, by changing the roll pitch,casting speed, the slab bulging deformation was analoged. The simulation resultswere compared and analysed.Paper concludes: Throug the combination of theory and practice, the simulationresults of solidification heat transfer process of the the Φ600King round billet are ideal,in line with the principle of continuous casting and metallurgy. We got the temperaturefield of continuous casting process, solidification curve, the curve of the surfacetemperature. By contrast the simulation results of different main parameters, thechanging of solidification heat transfer process is apparent. The study of Bulgingdeformation obtained the slab the bulging deformation results in a dangerous position,chocken its security. Obviously, the bulging deformation was controlled by changing themain process parameters.