Study On Growth And Shrink Compensation Of Oxygen-free Continuous Casting Slab

Casting mould is the most important part of slab casting machine.Mastering the temperature,sump and strain distribution in the mould and the rule are important for optimizing process parameters and promoting the quality of continuous casting slab.Taking a casting machine of one copper processing factory as the research object,by ESI PROCAST for the temperature and strain field simulation,study on the influence of different process parameters for temperature field,sump and strain field.By MATLAB fitting function,found the relationship between the temperature of continuous casting billet at the mould outlet and different process parameters.Study the shrinkage-compensating measures of slab and analyze the relationship between contraction coefficients,taper and size deviation,gap.Simulation results show that the cooling water volume,casting speed,casting temperature and slab thickness ratio have a significant impact for the temperature and strain field.Reducing the cooling water volume,casting temperature,slab thickness ratio or increasing the casting speed.With permission is helpful in reducing temperature gradient and stress in the slab and improving slab quality.Increasing the cooling water of secondary cooling zone can effectively reduce the slab temperature.Fitting function shows that the different process parameters and the temperature of continuous casting billet at the mould outlet have a clear functional relationship.That has important guiding significance for enterprise production.Comparing the compensation measures of the slab shrinkage behavior of Voestalpine and Baosteel indicates that the compensation measure of Voestalpine is better.