{"title":"Effective Work Roll Cooling toward Stand Reduction in Hot Strip Process","authors":"Temsiri Sapsaman, Anocha Bhocarattanahkul","volume":91,"journal":"International Journal of Industrial and Manufacturing Engineering","pagesStart":1339,"pagesEnd":1345,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10003554","abstract":"The maintenance of work rolls in hot strip processing
\r\nhas been lengthy and difficult tasks for hot strip manufacturer
\r\nbecause heavy work rolls have to be taken out of the production line,
\r\nwhich could take hours. One way to increase the time between
\r\nmaintenance is to improve the effectiveness of the work roll cooling
\r\nsystem such that the wear and tear more slowly occurs, while the
\r\noperation cost is kept low. Therefore, this study aims to improve the
\r\nwork roll cooling system by providing the manufacturer the
\r\nrelationship between the work-roll temperature reduced by cooling
\r\nand the water flow that can help manufacturer determining the more
\r\neffective water flow of the cooling system. The relationship is found
\r\nusing simulation with a systematic process adjustment so that the
\r\nsatisfying quality of product is achieved. Results suggest that the
\r\nmanufacturer could reduce the water flow by 9% with roughly the
\r\nsame performance. With the same process adjustment, the feasibility
\r\nof finishing-mill-stand reduction is also investigated. Results suggest
\r\nits possibility.","references":"[1] O. Pawelski, Arch. Eisenhuttenwes., 1968, pp. 821-827.\r\n[2] G. van Steden and J.G.M Tellman, \u201cA new method of designing a work\r\nroll cooling system for improved productivity and strip quality,\u201d in Proc.\r\nof the fourth International Steel Rolling Conf.: The Science and\r\nTechnology of Flat Rolling, vol. 1, Deauville, France, June 1-3, 1987,\r\npp. A29.1-A29.12.\r\n[3] V.B. Ginzburg and F. Bakhtar, \u201cApplication of coolfex model for\r\nanalysis of work roll thermal conditions in hot strip mills,\u201d Iron Steel\r\nEng., Nov 1997, pp. 38-45.\r\n[4] V.B. Ginzburg, M. Azzam, and R.J. Issa, \u201cNew roll thermal crown\r\n(RTC) control system,\u201d in Proc. of 1996 AISE Spring Convention,\r\nCincinnati, Ohio, April 22-23, 1996, pp. 267-277.\r\n[5] A. Saboonchi and M. Abbaspour, \u201cChanging the geometry of water\r\nspray on milling roll and its effect on the work roll temperature,\u201d J.\r\nMaster. Process. Technol., vol. 148, 2004, pp. 35-49.\r\n[6] M. Abbaspour and A. Saboonchi, \u201cWork roll thermal expansion control\r\nin hot strip mill,\u201d in Applied Mathematical Modelling, vol. 32, 2008, pp.\r\n2652-2669.\r\n[7] Y. Lin and K.M. McHucg, \u201cThe selection of the spray deposition rate\r\nduring the spray rolling process,\u201d in Metallurgical and Materials\r\nTransactions A, November 17, 2003.\r\n[8] K.H. Schroeder, British Rollmakers (China) Ltd, paper presented WMSP\r\n2004, New Orleans.\r\n[9] G. Abbruzzese and K. L\u00fccke, Material Science Forum, vol. 94-96, 1992,\r\np. 597.\r\n[10] H.R. Shercliff and M.F. Ashby, \u201cA process model for age hardening of\r\naluminium alloys\u2014I. The model\u201d, Acta Metallurgica et Materialia, vol.\r\n38, 1990, pp. 1789-1802.\r\n[11] P. Choquet, P. Fabregue, J. Giusti, and B.Chamont, in Yue,S., ed., Proc.\r\nInt. Symposium On Mathematical Modeling of Hot-Rolling of Steel.\r\nQuebec: CIM; 1990, pp. 34-43.\r\n[12] G.A. Duit, A.Hurkmans, J.J.F. Scheffer, and T.M. Hoogendoorn,\r\nThermec \u201988, I. Tamura, ed., ISIJ. Tokyo, 1988, pp. 114-21.\r\n[13] A. Bhocarrattanahkul, T. Sapsaman, and A. Suebsomran, \u201cParameter\r\nstudies of work roll cooling in finishing mill for hot strip processing,\u201d in\r\nthe 4th Nat. Conf. of Industrial Operations Development 2013.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 91, 2014"}