The Structural Peclet Number has been estimated experimentally by analyzing the morphology of the continuously cast brass ingots. It
allowed to adapt a proper development of the Ivantsov’s series in order to formulate the Growth Law for the columnar structure formation
in the brass ingots solidified in stationary condition. Simultaneously, the Thermal Peclet Number together with the Biot, Stefan, and
Fourier Numbers is used in the model describing the heat transfer connected with the so-called contact layer (air gap between an ingot and
crystallizer). It lead to define the shape and position of the s/l interface in the brass ingot subjected to the vertical continuous displacement
within the crystallizer (in gravity). Particularly, a comparison of the shape of the simulated s/l interface at the axis of the continuously cast
brass ingot with the real shape revealed at the ingot axis is delivered. Structural zones in the continuously cast brass ingot are revealed: FC
– fine columnar grains, C – columnar grains, E – equiaxed grains, SC – single crystal situated axially.
Some metallographic studies performed on the basis of the massive forging steel static ingot, on its cross-section, allowed to reveal the
following morphological zones: a/ columnar grains (treated as the austenite single crystals), b/ columnar into equiaxed grains
transformation, c/ equiaxed grains at the ingot axis. These zones are reproduced theoretically by the numerical simulation. The simulation
was based on the calculation of both temperature field in the solidifying large steel ingot and thermal gradient field obtained for the same
boundary conditions. The detailed analysis of the velocity of the liquidus isotherm movement shows that the zone of columnar grains
begins to disappear at the first point of inflection and the equiaxed grains are formed exclusively at the second point of inflection of the
analyzed curve. In the case of the continuously cast brass ingots three different morphologies are revealed: a/ columnar structure, b/
columnar and equiaxed structure with the CET, and c/ columnar structure with the single crystal formation at the ingot axis. Some
forecasts of the temperature field are proposed for these three revealed morphologies. An analysis / forecast of the behavior of the
operating point in the mold is delivered for the continuously cast ingot. A characteristic delay between some points of breakage of the
temperature profile recorded at the operating point and analogous phenomena in the solidifying alloy is postulated.
An innovative method for determining the structural zones in the large static steel ingots has been described. It is based on the
mathematical interpretation of some functions obtained due to simulation of temperature field and thermal gradient field for solidifying
massive ingot. The method is associated with the extrema of an analyzed function and with its points of inflection. Particularly, the CET
transformation is predicted as a time-consuming transition from the columnar- into equiaxed structure. The equations dealing with heat
transfer balance for the continuous casting are presented and used for the simulation of temperature field in the solidifying virtual static
brass ingot. The developed method for the prediction of structural zones formation is applied to determine these zones in the solidifying
brass static ingot. Some differences / similarities between structure formation during solidification of the steel static ingot and virtual brass
static ingot are studied. The developed method allows to predict the following structural zones: fine columnar grains zone, (FC), columnar
grains zone, (C), equiaxed grains zone, (E). The FCCT-transformation and CET-transformation are forecast as sharp transitions of the
analyzed structures. Similarities between steel static ingot morphology and that predicted for the virtual brass static ingot are described.