A Multiple-criteria Approach to Dynamic Cold-ingot Substitution
作者:
VaskoFrancis J.,
WolfFloyd E.,
McNamaraJohn A.,
期刊:
Journal of the Operational Research Society
(Taylor Available online 1989)
卷期:
Volume 40,
issue 4
页码: 361-366
ISSN:0160-5682
年代: 1989
DOI:10.1057/jors.1989.54
出版商: Taylor&Francis
关键词: computer system;multi-criteria;steel industry
数据来源: Taylor
摘要:
AbstractBethlehem Steel's plant at Bethlehem, Pennsylvania uses a computer-based mill-providing procedure to plan ingot requirements for the production of structural shapes and pilings. When not enough hot steel is available to meet all the ingot requirements, cold steel ingots from inventory must be substituted in order to meet the production plan. A computer system was developed that dynamically selects cold ingots to use when hot steel is not available. This system selects cold ingots based first on ingot-selection priorities, and secondly, within priorities, on several criteria. An approach was developed that assigns a penalty to each feasible cold ingot such that the priorities and multiple criteria are addressed by simply ranking the ingots based on their penalty values. Ingots are selected from the top of the ranked list, and the results are consistently acceptable to the steel-providers at the Bethlehem plant. The system improves yield and reduces material-handling costs.
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