Prediction of thermal field dynamics of mould in casting using artificial neural networks

Abstract

Manufacturing a large number of cast parts made of aluminium alloy led to an increased interest in developing and applying new control techniques of the casting process. Anyway, the difficulty in estimating some important process parameters only allowed the use of some approaches which are limited to a few geometric models. Many researchers made great efforts to find the best method for monitoring and measuring thermal field dynamics of the cast and mould during solidification and cooling of the melt alloy. Acquiring very accurate data leads to best approach for solving the heat transfer problem in casting. The paper presents the prediction of thermal field dynamics of mould in permanent mould casting using artificial neural networks and based on thermal history of the cast part and the way this thermal history influences the thermal changes of the mould. It is very important to identify the relation between the thermal fields' dynamics of both cast and mould in order to create and use a control technique of the cast solidification and cooling. The necessity of controlling the cast solidification is due to the large demand of cast parts with improved mechanical properties.

Analytical method of calculation of thermal fields in the process of pouring the foundry mold and crystallization of metal

“…Typically, programs are built on finite element or finite element methods [9][10][11][12][13][14]. However, these methods require the precise setting of boundary conditions, one of which is again the surface temperature of the casting.…”

Research Thermal Fields in the Crystallization Process of Steel Cast Parts

“…Almost all researchers agree on the importance of the comprehensive assessment of the thermal felds of the "casting-mold" system [30]. Tis is also relevant from the point of view of the creation and widespread use of new environmentally friendly materials for foundry molds, such as orthophosphates and pyrophosphates of silicon and zirconium [31], meta-phosphates and pyrophosphates of sodium [32], as well as binders synthesized from various aluminum-containing compounds [33], thermophysical properties of which difer from previously known ones.…”