Controle estatístico de processos: estudo de caso em uma indústria de produção de bandejas de ovos

Abstract

With the increasing demand of the consumer market and the level of competitiveness in recent times, companies must seek to achieve a better overall performance in terms of quality/cost, in the constant search for a competitive advantage over competitors and, consequently, making your product and/or service attractive to the consumer. In this context, the objective of this work was to apply the statistical control of processes in an egg trays production company that does not use methods and tools for quality control. The application of the study was made through a case study in a process of production of egg trays of a company located in the interior of Paraná, Brazil. Subsequently, the average and standard deviation (X-S) graphs for the weight and thickness variables and the number of non-conforming graphs (Np) were applied to the number of defective trays per sample, making it possible to analyze stability and capacity the process. As a result, it was verified that for the variable thickness and weight, the process is stable, but when analyzing the process capacity, for the weight variable, the process is considered capable, whereas for the variable thickness, the process is considered incapable, and when analyzing the graph of Np, the process is considered under statistical control. In this sense, the Ishikawa and 5W2H tools were used to investigate the inability of the process for the variable thickness and proposed actions to improve the productive process of the company.