NUMERICAL MODELLING OF METAL FILLING IN CCM MOLD COMPLETED WITH DEFLECTOR

Abstract

Flow of molten metal to the mold of continuous casting machine (CCM) is an insufficiently studied process up to the present  day. This paper is a continuation of author’s works published in  scien tific se rials last years. It shows the possibility of a theoretical  research of motion kinetics and thermal flows of molten metal in the  mold during traditional casting by using hydrodynamic theory and  mathematical physics equations and a proven numerical approach.  This familiar calculation methodology makes it possible to calculate  flows of molten metal motions and their temperatures in the mold  and to compare the obtained results with ones obtained during usage  of other methods of metal pouring including proposed method. This  paper describes and solves three-dimensional problem of determination of velocity and temperature fields in metal poured to CCM mold  from the submerged nozzle to the round deflector. In addition, the  calculation methodo logy described in previous works of the authors  is used, namely, the constitutive equation system, numeric method,  numerical scheme and algorithm for solving the problem. Hardened  metal crust forming on the mold faces was not considered in this  calculation. For the results objective analysis of the problem solving  in two ways (traditional and proposed), the same theoretical (speed  of pulling-out from crystallizer) and geometrical parameters of rectangular cross-section mold were taken. Application for an invention for the described alternative method of liquid metal supplying to  rectangular mold was registered (No.  2018108974/02 (013808)). The  article contains some results of numerical solution of the problem in  particular schemes of molten metal flows and their temperatures over  different sections of the mold.