Real-time rule-based control of the thermal crown of work rolls installed in hot strip mills
The extreme thermal conditions suffered by the work rolls of hot strip mills provoke the appearance of nonuniform thermal expansion or thermal crown. The rolling of strips under bad thermal crown conditions generally produces products of unacceptable quality. An adequate cooling system can reduce th...
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| Veröffentlicht in: | IEEE transactions on industry applications 2004-03, Vol.40 (2), p.642-649 |
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| container_title | IEEE transactions on industry applications |
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| creator | Campos, A.M. Garcia, D.F. De Abajo, N. Gonzalez, J.A. |
| description | The extreme thermal conditions suffered by the work rolls of hot strip mills provoke the appearance of nonuniform thermal expansion or thermal crown. The rolling of strips under bad thermal crown conditions generally produces products of unacceptable quality. An adequate cooling system can reduce thermal crown and improve production quality but, due to the complexity of the rolling process itself, and to the impossibility of measuring the thermal crown of the work rolls online, the coolant fluxes are rarely modified by the mill operators, thereby reducing cooling effectiveness. This paper presents a novel real-time control system for thermal crown. It uses a thermal model to estimate the thermal crown of the work rolls and a set of rules that, using the estimated thermal crown and information about the rolling program and the fluxes of coolant, generates adequate set points for a cooling system. |
| doi_str_mv | 10.1109/TIA.2004.824497 |
| format | Article |
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The rolling of strips under bad thermal crown conditions generally produces products of unacceptable quality. An adequate cooling system can reduce thermal crown and improve production quality but, due to the complexity of the rolling process itself, and to the impossibility of measuring the thermal crown of the work rolls online, the coolant fluxes are rarely modified by the mill operators, thereby reducing cooling effectiveness. This paper presents a novel real-time control system for thermal crown. It uses a thermal model to estimate the thermal crown of the work rolls and a set of rules that, using the estimated thermal crown and information about the rolling program and the fluxes of coolant, generates adequate set points for a cooling system.</description><identifier>ISSN: 0093-9994</identifier><identifier>EISSN: 1939-9367</identifier><identifier>DOI: 10.1109/TIA.2004.824497</identifier><identifier>CODEN: ITIACR</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Control systems ; Coolants ; Cooling ; Industry Applications Society ; Milling machines ; Steel ; Strips ; Temperature control ; Thermal expansion ; Thermal factors</subject><ispartof>IEEE transactions on industry applications, 2004-03, Vol.40 (2), p.642-649</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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The rolling of strips under bad thermal crown conditions generally produces products of unacceptable quality. An adequate cooling system can reduce thermal crown and improve production quality but, due to the complexity of the rolling process itself, and to the impossibility of measuring the thermal crown of the work rolls online, the coolant fluxes are rarely modified by the mill operators, thereby reducing cooling effectiveness. This paper presents a novel real-time control system for thermal crown. It uses a thermal model to estimate the thermal crown of the work rolls and a set of rules that, using the estimated thermal crown and information about the rolling program and the fluxes of coolant, generates adequate set points for a cooling system.</description><subject>Control systems</subject><subject>Coolants</subject><subject>Cooling</subject><subject>Industry Applications Society</subject><subject>Milling machines</subject><subject>Steel</subject><subject>Strips</subject><subject>Temperature control</subject><subject>Thermal expansion</subject><subject>Thermal factors</subject><issn>0093-9994</issn><issn>1939-9367</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNqFkb1LBDEQxYMoeJ7WFjbBwm7PfEx2M6WIXyAIcqUQkt0crmY3Z7KH-N-b4wTBxmIYmPm9gXmPkFPOFpwzvFw-XC0EY7DQAgCbPTLjKLFCWTf7ZMYYygoR4ZAc5fzGGAfFYUZenr0N1dQPnqZN8JWz2Xe0jeOUYqBxRadXv6002EDbFD_H7fAzpndagJBpP-bJhlBE_Uhf40TzlPo1HfqyPCYHKxuyP_npc7K8vVle31ePT3cP11ePVStBT5XzVjpw2HLWNsoqqHWna9RMdCAF1M46rnm36mrgqB2HTiB6QAHCSdfJObnYnV2n-LHxeTJDn1sfgh193GQjUIHGYsC_oFYNl4oX8PwP-BY3aSw_GK2BIVOoCnS5g4otOSe_MuvUDzZ9Gc7MNhJTIjHbSMwukqI42yl67_0vLRpdg5Lfd4GGxg</recordid><startdate>200403</startdate><enddate>200403</enddate><creator>Campos, A.M.</creator><creator>Garcia, D.F.</creator><creator>De Abajo, N.</creator><creator>Gonzalez, J.A.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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The rolling of strips under bad thermal crown conditions generally produces products of unacceptable quality. An adequate cooling system can reduce thermal crown and improve production quality but, due to the complexity of the rolling process itself, and to the impossibility of measuring the thermal crown of the work rolls online, the coolant fluxes are rarely modified by the mill operators, thereby reducing cooling effectiveness. This paper presents a novel real-time control system for thermal crown. It uses a thermal model to estimate the thermal crown of the work rolls and a set of rules that, using the estimated thermal crown and information about the rolling program and the fluxes of coolant, generates adequate set points for a cooling system.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TIA.2004.824497</doi><tpages>8</tpages></addata></record> |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Control systems Coolants Cooling Industry Applications Society Milling machines Steel Strips Temperature control Thermal expansion Thermal factors |
| title | Real-time rule-based control of the thermal crown of work rolls installed in hot strip mills |
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