otimização da programação de cargas de forno em uma fábrica de fundição em aço-inox optimizing the scheduling of furnace loadings in a inox-steel foundry
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ID: 165425
2004
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Abstract
Neste trabalho apresenta-se uma abordagem para otimizar a programação de cargas de forno em fundições de mercado de pequeno porte. Tal abordagem consiste, basicamente, em definir a programação dos fornos para produzir uma carteira de pedidos composta de diversas peças em ligas metálicas variadas, de maneira a maximizar a produtividade (ou a margem de contribuição ao lucro) e satisfazer prazos de entrega e restrições de processo. O procedimento proposto é baseado na teoria dos problemas de corte e empacotamento; ele combina uma heurística construtiva gulosa com o clássico problema da mochila. Para validá-lo, um estudo de caso foi realizado numa fundição em aço-inox localizada em São Carlos, SP. Os resultados da simulação de duas semanas de produção da empresa mostraram que o procedimento é capaz de produzir soluções melhores do que as utilizadas pela empresa.
This study presents an approach to optimize the scheduling of furnace loadings in small size foundries. The approach consists of determining a furnace scheduling to produce all ordered items in such a way as to maximize productivity (or profit contribution) and satisfy due dates and process restraints. It is based on the theory of cutting and packing problems; it combines a greedy constructive heuristic and the classical knapsack problem. To validate the approach, a case study was developed in a inox-steel foundry located in São Carlos, SP. The results obtained simulating two weeks of the company production showed that the procedure is able to generate better solutions than the ones used by the company.
This study presents an approach to optimize the scheduling of furnace loadings in small size foundries. The approach consists of determining a furnace scheduling to produce all ordered items in such a way as to maximize productivity (or profit contribution) and satisfy due dates and process restraints. It is based on the theory of cutting and packing problems; it combines a greedy constructive heuristic and the classical knapsack problem. To validate the approach, a case study was developed in a inox-steel foundry located in São Carlos, SP. The results obtained simulating two weeks of the company production showed that the procedure is able to generate better solutions than the ones used by the company.
| Reference Key |
silva2004gestootimizao
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|---|---|
| Authors | ;Raida de Jesus Silva;Reinaldo Morabito |
| Journal | journal of pharmacy and pharmacognosy research |
| Year | 2004 |
| DOI |
10.1590/S0104-530X2004000100012
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| URL | |
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