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Sequencing and Scheduling in Coil Coating with Shuttles

Authors: Wiebke Höhn, Felix G. König, Marco E. Lübbecke, and Rolf H. Möhring

Published in: Dagstuhl Seminar Proceedings, Volume 9261, Models and Algorithms for Optimization in Logistics (2009)

Abstract

Applying combinatorial optimization in real life yields cost savings delighting the industry. Beyond that, at the core of some applications also lies a pretty (sub)problem rejoicing the mathematician. In our application coils of sheet metal are coated with k layers out of hundreds of colors. Coils are stapled together to run through k coaters, and non-productive time occurs e.g. when the color in a coater needs to be changed. Some coaters have two parallel tanks, enabling either parallel colors or cleaning of one tank during production. We present our sequencing and scheduling scheme in use at the plant today, lower bounds proving solution quality, and problems in the edge-wise union of interval graphs as a pretty mathematical subproblem.

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Wiebke Höhn, Felix G. König, Marco E. Lübbecke, and Rolf H. Möhring. Sequencing and Scheduling in Coil Coating with Shuttles. In Models and Algorithms for Optimization in Logistics. Dagstuhl Seminar Proceedings, Volume 9261, pp. 1-29, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{hohn_et_al:DagSemProc.09261.26,
  author =	{H\"{o}hn, Wiebke and K\"{o}nig, Felix G. and L\"{u}bbecke, Marco E. and M\"{o}hring, Rolf H.},
  title =	{{Sequencing and Scheduling in Coil Coating with Shuttles}},
  booktitle =	{Models and Algorithms for Optimization in Logistics},
  pages =	{1--29},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9261},
  editor =	{Cynthia Barnhart and Uwe Clausen and Ulrich Lauther and Rolf H. M\"{o}hring},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09261.26},
  URN =		{urn:nbn:de:0030-drops-21654},
  doi =		{10.4230/DagSemProc.09261.26},
  annote =	{Keywords: Sequencing, scheduling, coil coating, mutli-interval graphs, heuristics, branch and price}
}

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Sequencing and Scheduling in Coil Coating with Shuttles

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