Aspecto casca de laranja: estudo de caso no setor automotivo

Abstract

This work was developed in the automotive painting sector of an automaker in Brazil, and the study was carried out on only one car model of the automaker in question. To reduce, commonly called the orange aspect for its resemblance to a common orange peel, some of the possible causes of the defect were detected. For this, tests were carried out to evaluate the duration of temperature and humidity, affecting the quality of the painting, with the aggravation of the defect. The thickness increase test was performed to find out what the minimum thickness was, in which there was a reduction of a defect reduction. Finishing with the thermography that was performed from the manual varnish cabin, the defect of the bodywork, for later of the article, was available for use in quality application and increase for quality application. From the results obtained, it was possible to observe that the minimum thickness contributes to the reduction in orange cascade, but increases the amount of product and consequently the cost, not being feasible. As for the thermography test, it was observed that if the temperature of the bodywork decreases before applying the varnish, there is a decrease in the defect, in relation to the scale from 1 to 8, it had an increase from "5" to "4" in climbing. So, the tests to increase the thickness and temperature of the body were positive, but not viable, due to the fact that it increased the final cost of the vehicle and because it was necessary to improve the process, such as the installation of a heat wheel.