Análisis del sistema de colada semicontinua para aleaciones de aluminio

Abstract

In recent decades, the direct chill casting has remained semi-prominent position in the processing of commercial aluminum alloys, especially in the production of ingots. Therefore the research required to develop national industry to propose viable technical solutions that improve productivity and competitiveness, which is why part of this study was conducted at company facilities, IMASA ECKO. During the investigation it carried out the analysis of direct chill casting system for aluminum alloys and is carried out through three stages. The first tests were conducted on the ground in the second reproduced the DC-casting system at laboratory scale and the third system was simulated using a mathematical model. In the first instance, based on tests conducted on the ground determined the thermal stability of aluminum to be poured into the mold and solidification profile during forming of the ingot. It also took a record of the cooling water temperature and the information generated is calculated heat transfer from the solidifying material in contact with the cooling system. Also in the DC-casting laboratory scale determined heat transfer of bullion to the cooling system. In the simulation system, confirmed the results of the two previous stages. In addition, different operating conditions imposed in order to establish process improvements. Finally, it was found that reducing the dimensions of the mold reduces the cooling water consumption substantially in the semi-casting process of aluminum.