Desenvolvimento de um processo de fundição por cera perdida utilizando areia de construção civil

Abstract

The precision casting process can also be known by othernamessuch as microfusion or lost waxand is used for the production of metal parts, the useofalmost all alloysbeing allowed. Although, historically, the precission casting process originated for the production of art pieces, today it is widely used in several segments of the industry, with diferentegeometries, excelentefinishing and strict controlofmechanical properties. Starting from method already established to carry out thisprocess, this techinical work was carried out on a new ceramic shell for the productionof aluminum parts, through the silicone molds, beeswax models of chesspieces and alockforthe ejection system of a parachuteof a low thrust rocket wereproduced. In othertodevelop and evaluate a new ceramicshell for making castings,similar to whatis done in the industry, thus generatingparts with less defects and that do not need to be subjected to otherprocesses such as machining and forming, a new composition of constituents of the ceramic shell was made: neutral sodium silicate and sand from civil construction. The pieces obtained in aluminum were thencomparedand analyzed by photoswith their respective wax models.This way, it was possible to produce and evaluatea new ceramic shell using the precision casting process.