SISTEMA PARA AUXÍLIO DE SEQÜENCIAMENTO DE PROGRAMAÇÃO DA ACIARIA EM UMA USINA SIDERÚRGICA INTEGRADA
Planejamento da produção
Modelo matemático
Siderurgia
Indústria siderúrgica
Algoritmo
Aciaria
Planejamento
Programação
Modelamento
Siderurgy
Steel making plant
Planning and programming
Modeling
Algorithm
CNPQ::ENGENHARIAS::ENGENHARIA DE PRODUCAO
Abstract
This dissertation presents a case study on programming sequences of liquid steel
castings on the Continuous Casting Machines of a big integrated siderurgical plant. The
described problem is from complex nature, with the most diverses restrictions, presenting
difficulted representation. The considered developed model has the purpose to allow a
simplification of the process of programming the production of the equipments of this Steel
making plant, standing out that no model in literature was found with the perfect adjust to the
reality. The mathematical model is based on a binary linear program, for the continuous
casting machine of the steel, where as main factors of modeling the lesser cost (better use of
the deliverers), the attendance of the weekly demand of efficient form, and in a time of
considerable production for the reduction of the claims of production delays of the orders. A
study of the products mix planned it showed that, due to great variety and amount of orders,
the election phase was not critical and the sequencing could be semimanually made with aid
of the computer. To improve the income of the deliverers the emptying of incompatible
degrees becomes necessary, but with small weekly demands, in the same deliverer, what,
although to increase the index of plates without lamination itens, still thus diminishes the
production costs. The study takes in consideration the total time of production of steel since
the casting on the Steel making plant until the steel hot lamination, including the chemical and
mechanical assays on the plates and on the bobbins, scurfing and cooling the dry one or to the
water. The considered computational system implements a simple algorithm that sequence the
group of steel degrees to be leaked in accordance with the demand for them and the lead time
of production of each one, representing a good tool of programming sequences for the
programmer of the Steel making plant that can stay on accordance with interact and change
them the prevalecentes conditions, standing out that this system alone is valid for periods of
normal production, and without interferences of possible priorities of production.
[Texto sem Formatação]
[Texto sem Formatação]
Document type
DissertaçãoFormat
application/pdf
Subject(s)
Engenharia de produçãoPlanejamento da produção
Modelo matemático
Siderurgia
Indústria siderúrgica
Algoritmo
Aciaria
Planejamento
Programação
Modelamento
Siderurgy
Steel making plant
Planning and programming
Modeling
Algorithm
CNPQ::ENGENHARIAS::ENGENHARIA DE PRODUCAO