UTILIZAÇÃO DO RESFRIADOR DE AÇO TIPO MOLA PARA SOLUCIONAR RECHUPE EM PEÇAS FUNDIDAS

Abstract

The casting process, in general, consists of pouring liquid metal into a mold cavity, allowing to obtain pieces, with the shape of the said cavity, after the metal solidifies. The processes can be classified by the type of mold, by the force or pressure used to fill it with the liquid metal. This technology applies to various types of metals, such as: steels, cast irons, aluminum, copper, zinc, magnesium and their alloys. The chiller is a metallic artifact used to obtain uniform cooling in parts with varying thicknesses, avoiding the precipitation of internal pores from the cooling process, also known technically as fillers. The chillers guarantee internal health and mechanical properties in castings in nodular iron, requirements that are required by the customer, avoiding losses for the manufacturer and greater profitability, especially in items with complex geometry, where only the use of metal tanks, so-called massalotes cannot be used or are not enough: of these characteristics, the present work will aim to develop a spring-type cooler to correct the problem of filling in castings made of nodular material, presenting the most viable way to decrease the return rate to values ​​acceptable by the company's quality controls, thus guaranteeing the customer satisfaction.