Programação linear inteira para corte em chapas: uma análise numa indústria siderúrgica

Abstract

Companies, in general, are seeing increasingly need to become morecompetitive and updated to face the current market. One way to achieve this is increase productivity and the company's business efficiency. And for this, there are decisive factors such as increased product quality, innovations and reduction of production costs, which make the product offered highlighted in the market and at the same time economically viable. Given this need to become more competitive, it was perceived in Usiminas (Steel Unit of the city of Ipatinga - Minas Gerais) the opportunity to carry out the cuts of the plates (for shipbuilding) within the production line. This new activity, plate cutting, should be done optimally to ensure the expected m results. The objective of this study is to analyze and propose among pre-set cutting patterns, which should be used and in what quantity, in order to optimize production costs. As the result, a mathematical model was developed, using the GLPK software, which determines the use of these cutting patterns, optimizing the cost at the lowest possible value.