Análise da influência dos parâmetros do processo de fundição em areia verde na produção de placas de zinco

Abstract

The green sand casting process is widely used in the production of metallic pieces, as sand molds have good resistence at high temperatures reached during processes. Furthermore, it is an easy and low-cost technique, which can be performed both manually and automatically. It consists of creating a mold using a model of the shape of the chosen piece, which will be pressed together with the green sand. After that, the model will be created only to the cavity for the metal casting. For the adapted part to be acceptable, it is necessary that it present a dimensional variation and few surface features, such as porosity, roughness and burr. This technique is used in practical work at the Foundry Laboratory of the Federal University of Ceará. Therefore, in order to improve the technique, tests were carried out with the process parameters, such as changing the pouring channels, the use of split molds and the change in the mold drying time. The metal chosen for the procedure was zinc and these changes worked, producing parts with a good finish.