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A two-stage scheduling method for hot rolling and its application
- Source :
-
Control Engineering Practice . Jun2009, Vol. 17 Issue 6, p629-641. 13p. - Publication Year :
- 2009
-
Abstract
- Abstract: Hot rolling scheduling is a difficult problem in the steel processing industry. It involves many objectives and constraints in both technical and practical respects. A two-stage scheduling method is proposed in this paper. Batch planning of staple material is formulated as a VRPTW, which is solved with a modified PGA. Then, batches of the established units are optimized by adjusting rolling sequences using intelligent search algorithms to reach higher hot charge ratios. This method has been applied to a hot strip mill belonging to Baosteel in China. Our results demonstrate that the proposed technique can improve production efficiency and offer significant economic benefits. [Copyright &y& Elsevier]
- Subjects :
- *PRODUCTION scheduling
*ROLLING (Metalwork)
*ALGORITHMS
*AUTOMATIC control systems
Subjects
Details
- Language :
- English
- ISSN :
- 09670661
- Volume :
- 17
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Control Engineering Practice
- Publication Type :
- Academic Journal
- Accession number :
- 37813689
- Full Text :
- https://doi.org/10.1016/j.conengprac.2008.10.014