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Titolo:
A new mill-setup system for hot strip finishing mill integrating a processmodel and expertise
Autore:
Watanabe, T; Kitamura, A; Narazaki, H; Takahashi, Y; Hasegawa, H;
Indirizzi:
Kobe Steel Ltd, Proc Technol Res Lab, Nishi Ku, Kobe, Hyogo 6512271, JapanKobe Steel Ltd Kobe Hyogo Japan 6512271 hi Ku, Kobe, Hyogo 6512271, Japan Kobe Steel Ltd, Elect Res Lab, Nishi Ku, Kobe, Hyogo 6512271, Japan Kobe Steel Ltd Kobe Hyogo Japan 6512271 hi Ku, Kobe, Hyogo 6512271, Japan Kobe Steel Ltd, Kakogawa Works, Kakogawa 6750137, Japan Kobe Steel Ltd Kakogawa Japan 6750137 awa Works, Kakogawa 6750137, Japan
Titolo Testata:
ISIJ INTERNATIONAL
fascicolo: 8, volume: 40, anno: 2000,
pagine: 771 - 778
SICI:
0915-1559(2000)40:8<771:ANMSFH>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Keywords:
mill-setup; hot strip mill; roll gap differences; automation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Watanabe, T Kobe Steel Ltd, Proc Technol Res Lab, Nishi Ku, Kobe, Hyogo 6512271, Japan Kobe Steel Ltd Kobe Hyogo Japan 6512271 Hyogo 6512271, Japan
Citazione:
T. Watanabe et al., "A new mill-setup system for hot strip finishing mill integrating a processmodel and expertise", ISIJ INT, 40(8), 2000, pp. 771-778

Abstract

This paper describes a new mill-setup system for a hot strip finishing mill in the iron and steel making industry, that integrates process models andoperator expertise, Operator expertise is expressed in terms of roll gap differences between neighboring stands to avoid excessive loads that may lead to unstable rolling. The problem is formulated as that of minimizing deviation between the know-how-based roil gap difference pattern and the actualone. In order to realize such mill set-up considering the roll gap differences in actual plant, in which the computational time is strictly restricted, an estimation method of the Jacobian matrix for solving the problem is proposed. The efficiency and validity of the method are discussed, based on the linear system theory and case study results of simulations. The method is found to have valid computational properties for applying to the actual set-up of the process. Applying the system to the actual plant, it was found that operator intervention has been markedly reduced compared with the conventional set-up method. Furthermore the stability of operation, ie. a decrease in the frequency of defective roils, is also achieved.

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Documento generato il 05/07/20 alle ore 00:53:16