Rem: Revista Escola de Minas
Print version ISSN 0370-4467
SILVA, Christian Egidio da; OLIVEIRA, Diego Luiz; SILIDONIO JUNIOR, Luiz Carlos and RIVAROLI JUNIOR, Amir. The influence of recycled cold set on the mechanical properties and surface characteristics of molds used in casting process. Rem: Rev. Esc. Minas [online]. 2012, vol.65, n.1, pp.73-78. ISSN 0370-4467. http://dx.doi.org/10.1590/S0370-44672012000100010.
Optimizing cold set recycling is a great option to implement sustainability inside the casting industry. It allows for a reduction of raw material consumption and optimizes industrial wastes. The present work was developed to understand the influence of using cold set recycling on the mechanical properties of molds used in the casting industry. It was noted that it is possible to use up to 50% of recycled cold set in order to manufacture new sand molds, and that a change in resin percentage is necessary to improve the mechanical properties of cold set. The use of more than 50% of recycled cold set is not recommended because of the poor mechanical property results obtained. During the recycling cycles, it was observed that the grain morphology changed a lot.
Keywords : Sand; recycling; casting; wastes; cold set.