Device for estimating solidification shell thickness in mold, method for estimating thickness of solidified shell in mold, and continuous casting method of steel

摘要

An apparatus for estimating the thickness of a solidified shell in a mold according to the present invention isMeasurement of molten steel temperature in tundish of continuous casting equipmentMeasurement results of width and casting speed of cast strip cast by continuous casting equipment.Results of measurement of mold copper temperature and mold heat extraction quantity of continuous casting equipmentInput value of components of steel and thickness of castBy modeling the solidification reaction of molten steel in the mold of continuous casting equipment, by solving the three-dimensional unsteady heat conduction equation using model equations and parameters.By calculating the temperature distribution of molten steel in the mold and moldIt has a heat transfer model calculation department which estimates the solidification shell thickness in the mold.Heat transfer modelBy correcting the overall heat transfer coefficient between the mold and the solidified shellThe error of mold copper plate temperature and mold heat extraction quantity is corrected.