CAE Of New Structure Ladle With The Nanometer Adiabatic Material

Ladle is the main link equipment between convertor and continuous castingmachine in steelmaking production and plays an important role in the continuous castingproduction. The thermal insulation performance of ladle had a great significance forreducing the steel tapping temperature of convertor, improving casting quality, reducingthe surface temperature of cladding, raising the service life of ladle lining, optimizing theproduction process and reducing the production cost. A new type of ladle with nanometeradiabatic materials is put forward to develop ladle with the better thermal insulationeffect and longer service life.Aiming at the thermal insulation performance of ladle, there are three contents asfollowing.(1) The three-dimensional finite element model of new type of ladle was establishedbased on the theory of heat transfer, finite element method and the sequential couplingmethod and the boundary conditions of new type of ladle in the typical workingconditions are determined.(2) Temperature field and stress field of new type of ladle in the typical workingconditions were analyzed by finite element method. The numerical simulation resultsindicate that the temperature of shell for new type of ladle drops to114℃thantraditional ladle and the stress was lower13MPa in baking condition; the temperature ofshell for new type of ladle was lower109℃than traditional ladle and the stress waslower22MPa than traditional ladle in filling molten steel condition. Thermal insulationperformance and stress level of new type of ladle with nanometer adiabatic materials hasmore advantages than the traditional ladle.(3) The influence of physical parameters of nanometer adiabatic materials ontemperature field and stress field of shell are analyzed in filling molten steel condition.The simulation results indicated that with the decreasement of thermal conductivity,temperature and stress levels of shell were decreased; with the increasement of the elasticmodulus, the shell stress was decreased; with decreasement of the coefficient of thermalexpansion, the shell stress was decreased.The above contents play a certain reference role in understanding the thermalinsulation performance and select the appropriate physical parameters of new type ofladle with nanometer adiabatic materials. It can provide reliable theory for practicalapplication of new type of ladle with nanometer adiabatic materials.