Projeto e implantação do novo setor de galvanização eletrolítica livre de cianeto

Abstract

The metal electroplating process is widely used by the industry to obtain parts that have decorative characteristics, resistance to abrasion and corrosion, among others. The electrolytic zinc plating is one of the processes that has as objective the formation of a zinc conversion layer that will act as sacrificial metal when deposited on iron alloys, for example. The following paper presents the development of the project and the implementation of a new cyanide-free alkaline electrolytic electroplating section. The project covers from the informational phase, to the execution, addressing the feasibility of not using cyanide in the process, replacement of PVC by concrete in conjunction with isophthalic resin in the construction and lining of the tanks, reducing the number of baths without reducing the quality of the parts, selection and sizing of the material used in the process and in the bars. The main results obtained with the accomplishment of the work were the design of the tanks with a low cost, adequate to the process, and the possibility to increase the production, without reducing the quality of the galvanized parts.