Estudo de viabilidade técnica e econômica para aplicação de esmalte porcelânico por deposição eletrostática em peças de ferro fundido para fogões

Abstract

This work presents a preliminary technical and economic feasibility study on the application of enamel by electrostatic deposition on cast iron for the manufacture of stoves. This study serves as a model for a possible replacement of a silicone painting process on cast iron. It presents the origins of enameling in the world, what are its specificities in relation to the type of cast iron that this electrostatic powder enameling process can be applied, what are the main characteristics of the process, elaboration and composition of the frit and which furnaces are used in this process, the costs involved in both the implementation part and the operation part of a given project and the calculation of the return on investment. It shows in detail the method applied to obtain the necessary equipment for the process, the enameling booth, the firing furnace and the shelves; it also shows the way of applying the powder, the tests necessary for validating the quality of the enameled surface and signals the employees required for each sector. It discusses which equipment was selected and why they are suitable for the process, demonstrates the final product generated by enameling, verifies the results of the application of scratch and oxidation tests which directly impact the quality of the coating, analyzes the ideal layer thickness for the process, prepares a layout with the final disposition of the equipment in the designated place and presents an estimate of the number of employees necessary to handle each part of the process. It stratifies deployment and operating costs and generates a range of values for return on investment. This study results in a positive possibility of application of electrostatic powder enameling in the 3E stove factory in southwest Paraná.