4th INTERNATIONALSTEEL ROLLING

v. CONFERENCE

THE SCIENCE AND TECHNOLOGYOF FLAT ROLLING

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C O N T E N T S

VOLUME 1

1. DEVELOPMENT OF ROLLING TECHNIQUES FOR FLAT PRODUCTSG. DOLLE (Usinor Aciers, France)

A.I. HOT ROLLING CONDITIONS FOR OPTIMUM MILL PERFORMANCE AND HIGH PRODUCT QUALITYR.A. Walsh*, A.J. DeArdo** (• Allegheny Ludlum Steel Corporation, Brackenridge, U.S.A., ** University of Pittsburgh, Departmentof Material Science and Engineering, Pittsburgh, USA)

A.2. METALLURGICAL RATIONAL FOR HOT STRIP MILL PROCESSING OPTIMIZATIONG. Ludkovsky, T.A. Veslocki, T. Parayil (Research Department Inland Steel Company, East Chicago, Indiana, USA)

A.3. THE FACILITIES AND OPERATION OF THE HDR PROCESS AT THE NO.2 HOT STRIP MILL OF FUKUYAMA WORKSH. Wakatsuki, I. Taniguchi, T. Nakamura, T. Kazama, T. Terauchi (Hot and Cold Strip Department at Fukuyama Works, NipponKokan, Japan)

A.if. DIRECT ROLLING OF CONTINUOUS CAST SLABS ON A STRIP MILLE. Macri*, L. Rimini** (* Hot Strip Mills Technical Department Manager, Nuova Italsider, TARANTO, ITALY, *• Metallurgy &New Rolling Technologies Manager, Nuova Italsider, GENOVA, ITALY)

A.5. THE STELCO COILBOX : THE FIRST DECADET. Korabi*, P. Andersen** (* Manager, Technical Services Department, ** Systems Engineer, Process Computer Control Group,Corporate Engineering Stelco Inc., Hamilton, Ontario, CANADA)

A.6. NEW ROLLER TABLE THERMAL INSULATION SYSTEMS INCREASE PRODUCT RANGE AND SAVE ENERGY IN HOT STRIPMILLSW.R. Laws*, G.R. Reed*, E.C. Hewitt**, T.M. James** (* Encomech Engineering Services Ltd., • • Davy McKee (Sheffield)Ltd. U.K.)

A.7. MATHEMATICAL MODEL FOR HEAT RETENTION PANELSFereidoon Bakhtar*, Vladimir B. Ginzburg** (* Applied Technology Department, United Engineering, Inc., Pittsburgh, Pa, U.S.A.,*• International Rolling Mill Consultants, Inc., Pittsburgh, Pa, U.S.A.)

A.8. OPTIMISATION OF THE SHAPE OF SLAB ENDS ON THE REVERSING ROUGHING MILL OF SOLLAC HOT STRIP MILLF. FAU*, A. ADINE*, M. de VATHAIRE*, G. SMARZYNSKI** (* CIREP, Rolling Department, FLORANGE, FRANCE, ** SOLLAC,Hot Strip Mill, FLORANGE, FRANCE)

A.9. AUTOMATIC OPERATION OF SOLLAC REVERSING ROUGHING MILLM. de Vathaire*, XL. Montagut*, D. Burelli*, G. Remy** (* SOLLAC/CIREP Rolling Department, FRANCE, ** SOLLAC, Hot StripMill, FRANCE)

A.10. IMPROVEMENTS IN WIDTH CONTROL AT USINOR DUNKERQUEJ. Chabanier, F. Bertholio, J.M. Suret, A. Courtot (USINOR ACIERS, DUNKERQUE, FRANCE)

A.ll. CONTROLLED SLAB ROLLING IN A ROUGHING TRAIN OF A HOT STRIP MILLW. Fabian, H.J. Kopineck, H. Tamler, W. Tappe, H. Wladika (HOESCH STAHL AG, Dortmund, F.R. Germany)

A.12. CONTROL OF WIDTH AND END SHAPES WHEN ROLLING SLABS IN THE ROUGHING STANDS OF A HOT STRIP MILLH. Thies, E. Neuschutz, G. Mucke, R. Stelzer (Betriesforschungsinstitut VDEH)

A.13."HI-SPRED" - A NEW HOT ROLLING PROCESS WHICH CAN EFFECT MAJOR CHANGES OF SLAB WIDTHT. Hope, J.C. Dobson, K.T. Lawson (Davy McKee (Sheffield) LTD)

A.14. INVESTIGATION ON HOT STRIP MILL MODERNIZATIONY. Alkalay, P. Goranov, A. Gadjov (Iron & Steel Research Institute, Botunetz, Sofia, BULGARIA)

A.15. MODERN THICKNESS CONTROL FOR A GENERATION III HOT STRIP MILLD.A. Shaw P. Eng., G.A. Turnbull P. Eng. (Motors and Drives Department, Canadian General Electric, Peterborough, Ontario,Canada)

A.16. SET UP AND CONTROL MODELS OF THE FINISHING TRAIN OF A HOT STRIP MILLA. Shutt, C.W. Abbott (BRITISH STEEL CORPORATION)

A.17. STRIP CROWN FORMATION IN HOT STRIP MILLS WITH SPECIAL REGARD TO THERMAL INHOMOGENEITIESR. Gallob, F. Hirschmanner, U. Langer (VOEST-ALPINE AG, AUSTRIA)

A.19. THE UPC TECHNOLOGY - Modernisation of Hot Strip Mills, specifically in regard to profile control"The possibilities offered by and limits set to traditional rolling mill technology in comparison to a new generation of rolling mills'Emil Kersting, Heinz Teichert (MDS Mannesmann Demag Sack, Dusseldorf, West Germany)

A.20. STRIP PROFILE AND FLATNESS CONTROL IN HOT STRIP MILLS WITH PARTICULAR REFERENCE TO CVC TECHNOLOGYH. Wolters (Control Systems Department, SMS Schloemann-Siemag, Dusseldorf and Hilchenbach, FEDERAL REPUBLICOF GERMANY)

A.21. PROfclLE AND SHAPE CONTROL IN HOT STRIP MILLK. Shoji*, H. Miura*, E. Takeda**, R. Takahashi*** (* System Planning Department, ** Plate and Sheet Making Department,Wakayama Steel Works, Sumitomo Metals Industries, Ltd., Japan, *** Control & O.R. Technology Department, Instrumentation &Control, Technology Center, Sumitomo Metal Industries, Ltd., Amagasaki, Japan)

A.22. PAIR-CROSSED ROLLING MILL - MITSUBISHI PC MILL -Michihiro Nakamura*, Hiroshi Aratani*, Kazuo Hirase**, Shigeru Nishibayashi** (* Heavy Industrial Machinery DesigningDepartment, Hiroshima Machinery Works, Mitsubishi Heavy Industries, Ltd., •* Hot Rolling Mill Division, Hirohata Works, NipponSteel Corporation)

A.23. IMPROVING DIMENSIONAL CONTROL IN THE HOT MILLT.J. Knox, J.M. Moore (Welsh Laboratory, British Steel Corporation, Port Talbot, UK)

A.21. DEVELOPMENT OF A SHAPE MODEL AND A SHAPEMETER FOR HOT STRIP MILLSJ. JOUET*, F. TOURSCHER**, F. GREFF*, B. ROBERT* (* IRSID, Rolling Department, MAIZIERES-LES-METZ, FRANCE,** IRSID, Instrumentation and Control Department, MAIZIERES-LES-METZ, FRANCE)

A.25. AUTOMATIC FLATNESS CONTROL AT SOLMER'S HOT STRIP MILLJ. JOUET*, B. ROBERT*, G. TOURSCHER**, B de LAMBERTERIE*** (* IRSID, Rolling Mill Department, MAIZIERES-LES-METZ,FRANCE, ** IRSID, Instrument and Control Department, MAIZIERES-LES-METZ, FRANCE, •** SOLMER, H.S.M. TechnicalSection, FRANCE)

A.26. NEWLY DEVELOPED INSTRUMENTS FOR ON-LINE MEASUREMENT OF PROFILE AND SHAPE IN HOT STRIP MILLSH. Schmitz, F. Meuters (Rolling Department, Research Department, Thyssen Stahl AG, Duisburg, GERMANY)

A.27. LONG TIME EXPERIENCE WITH THE HOESCH FLATNESS MEASURING AND CONTROL SYSTEM FOR ROLLING HOT STRIPSW. Fabian, H.J. Kopineck, W. Tappe, H. Wladika (HOESCH STAHL AG, Dortmund, F.R. Germany)

A.28. IMPROVEMENT OF SHAPE FOR PLATES ROLLED ON A CONTINUOUS MILL WITH ROLL BENDING AT EACH STANDJ. Mignon*, H. Capouet**, S. Wilmotte* (* Centre de Recherches Metallurgiques, Abbaye du Val Benott, Liege, Belgique, ** Forgesde Clabecq, Belgique)

A.29. A NEW METHOD OF DESIGNING A WORK ROLL COOLING SYSTEM FOR IMPROVED PRODUCTIVITY AND STRIP QUALITYG. Van Steden, J.G.M. Tellman (Hoogovens IJmuiden, Process Technology Rolling Mills R & D, IJmuiden, The Netherlands)

A.3Q. CONTROLLING THE ROLL PROFILE BY DIFFERENTIAL HEATING THE ROLL COREH. Wladika, H.J. Kopineck (HOESCH STAHL AG, Dortmund, F.R. Germany)

A.31. TECHNOLOGY OF THE SCHEDULE-FREE ROLLING ON HOT STRIP MILLKen-ichi MATSUMOTO, Hidekazu ISHIKAWA, Shigemitsu TAKAI (Hot Rolling Department, Kure Works, Nisshin Steel Co., Ltd.,JAPAN)

A.32. DEVELOPMENT OF AN INTERSTAND STRIP BEHAVIOUR MODELB. PETIT*, P. RATTE*, C. GOMEZ** (* Rolling Department, IRSID, MAIZIERES-LES-METZ, FRANCE,** INRIA -ROCQUENCOURT, FRANCE)

A.33. LOOPLESS TENSION-CONTROLLED ROLLING OF AUSTENITIC AND FERRITIC STAINLESS GRADES IN A HOT STRIPFINISHING MILLWinfried Drexler*, Ernst-Otto Dornenburg**, Helmut Nonn**, Arne Buxbaum*** (* Betriebsforschungsinstitut VDEh-Institut furangewandte Forschung GmbH, Dusseldorf, ** Krupp Stahl AG, Bochum, *** AEG-Aktiengesellschaft, Berlin)

A.31. SURFACE CRACKING DURING HOT ROLLING OF FERRITIC STAINLESS STEELY. Higo, K.I. Shinoda (NISSHIN STEEL CO.)

A.35. FRICTIONAL STRESS AND RELATIVE SLIP IN HOT STRIP ROLLINGK. Kato, Y. Saito, T. Sakai (Department of Materials Science and Engineering Faculty of Engineering, Osaka University, JAPAN)

A.36. REDUNDANT SHEAR DEFORMATION AND ITS INFLUENCE ON AS-DEFORMED STRUCTURE IN HIGH SPEED HOT ROLLINGOF 18-8 STAINLESS STEEL STRIPYoshihiro SAITO, Tetsuo SAKAI, Kenzo KATO.(Department of Materials Science and Engineering, Faculty of Engineering, OsakaUniversity, JAPAN)

A.37. SURFACE DETERIORATION TYPES OF HIGH-Cr IRON ROLL IN HOT STRIP MILLH. Hiraoka*, Y. Watanabe*, Y. Fujiwara**, K. Ishii** (* Iron & Steel Laboratories, Kawasaki Steel Corp., JAPAN, ** Sheet &Strip Rolling Dept., Mizushima Works, Kawasaki Steel Corp., JAPAN)

A.38. ROLLED IN SCALE - THE CONSISTENT PROBLEMDavid T. Blazevic (President, Hot Rolling Consultants, Ltd, Homewood, Illinois, USA)

A.39. l»20 mm HOT STRIP MILL CONTROL OF ROLLED-IN-SCALEC.R. Griggti B.G. Sexton**, L.E. Matteson*** (• Research Investigator, Research Department, ** Engineering Staff Specialist,Plate and Strip Mills, Hilton Works, *** Divisional Superintendent, Plate and Strip Mills, Hilton Works)

B.I. THE PREDICTION OF ROLL FORCES DURING CONTROLLED ROLLINGD.L. Baragar, G.E. Ruddle (Metal Forming Section, Physical Metallurgy Research Laboratories, Ottawa, CANADA)

B.2. ASPECTS OF THE MATHEMATICAL MODELLING OF THE HOT ROLLING ON FLAT PRODUCTSH. Hofgen*, G. Zouhar*, F. Birnstock**, J. Bathelt*** (• Zentralinstitut fur Festkorperphysik und Werkstofforschung der Akademieder Wissenschaften der DDR, Dresden, *• VEB Metallurgieelektronik, Kombinat Zentraler Industrieanlagenbau der Metallurgie,Leipzig, DDR, *•* VEB Bandstahlkombinat Eisenhiittenstadt, DDR)

B.4. STUDY OF THE PREDICTIVE CAPABILITIES OF MATHEMATICAL MODELS OF FLAT ROLLINGJ.G. Lenard (Department of Mechanical Engineering, University of New Brunswick, Canada)

B.5. FAST : A NEW MODEL FOR ACCURATE PREDICTION OF ROLLING FORCE APPLICATION ON THE SOLMER HOT STRIP MILLP. Choquet*, B. de Lamberterie**, C. Perdrix***, H. Biausser* (• IRSID, SAINT-GERMAIN-EN-LAYE, FRANCE, ** SOLMER,FRANCE, *** USINOR ACIERS, DUNKERQUE, FRANCE)

B.6. NEW APPROACH TO PREDICT ROLL FORCES IN A HOT STRIP MILL FOR SMALL LOT SIZED ROLLING SCHEDULESA.J. van den Hoogen, G.J. Heesen, F. Hollander (Hoogovens IJmuiden, Process Technology Rolling Mills R & D, The Netherlands)

C.l. DEVELOPMENT OF CAMBER CONTROL SYSTEM IN PLATE ROLLINGT. MIYAKE*, K. OHMORI*, Y. TANAKA*, M. INOUE*, K. NISHIZAKI**, S. TEZUKA***, M. KITAHAMA**** (* Mizushima Works,Kawasaki Steel Corporation, Kurashiki, Japan, ** Hi-Tech Research Laboratories, Kawasaki Steel Corporation, Chiba, Japan,*** Silicon Department, Kawasaki Steel Corporation, Chiyoda-ku, Tokyo, Japan, **•* Technical Research Laboratories, KawasakiSteel Corporation, Chiba, Japan)

C.2. APPLICATION OF THE VERY SLOW SPEED ROLLING TO PLATE MILLSY. Yamamoto, H. Yoshinaga, K. Shigematsu (Plate and Sheet making Department, Sumitomo Metal Industry Ltd. Wakayama,JAPAN)

C.3. DEVELOPMENT OF PLATE ROLLING TECHNOLOGY AT NSC PITA WORKSK. Wakatsuki, O. Dairiki, Dr. H. Mabuchi (Plate Technical Department, Hot Strip and Plate Division, Oita Works, Nippon SteelCorporation, JAPAN)

C*. APPLICATION OF THE WORK ROLL SHIFT MILL TO THE FUKUYAMA PLATE MILLY. Ishihara*, K. Yako*, M. Yamawaki**, S. Murakami***, S. Masuda**** (* Operation Technology, Fukuyama Works, Nippon KokanK.K., Hiroshima, Japan, •* Plate Department, Fukuyama Works, Nippon Kokan K.K., Hiroshima, Japan, *** Process ControlTechnology, Fukuyama Works, Nippon Kokan K.K., Hiroshima, Japan, •*** Technical Research Center, Nippon Kokan K.K.,Kanagawa, Japan)

C.5. PROFILE MEASUREMENTv D.W. ADAMS CEng, MIERE*, H. GUTBERLET** (* DAYSTROM, Gloucester, UK, ** Industrial Gauging and Control Systems,

Erlangen, FRG)

C.6. IMPROVEMENT IN PRODUCTION YIELDS THROUGH PHYSICAL MODELING OF ROLLINGM.W. Nichols, J.M. Kessler (Lukens Steel Company, U.S.A.)

C.7. A MATHEMATICAL MODEL FOR ROLLING SCHEDULE DESIGN AND COMPUTER CONTROL OF THE USIMINAS 4100 mmPLATE MILLH.L. Andrade*, A.J. Roldan*, J.E.A. Pereira**, G.A.C. Hauck* (* Research Center, USIMINAS, Ipatinga-MG, BRAZIL, ** HotRolling Department, USIMINAS, Ipatinga-MG, BRAZIL)

C.8. MODELLING OF THERMOMECHANICAL AND METALLURGICAL PROCESSES IN PLATE ROLLINGP.D. Hodgson, J.A. Szalla, P.J. Campbell (BHP Melbourne Research Laboratories, AUSTRALIA)

C.9. DEVELOPMENT OF A NEW ON-LINE PROCESS CONTROL FOR THE PLATE MILLD. Cheval, F. Vasseur (USINOR)

CIO. A NEW COMPUTER SYSTEM FOR NORMALIZING ROLLING OF CUSTOM SIZE PLATESM. Chaboud*, G. Cunche*, B. Fazan** (* USINOR-ACIER, TFK - DUNKERQUE, FRANCE, •* IRSID, MAIZIERES-LES-METZ,FRANCE)

C.I 1. COMPUTER CONTROLLED THERMOMECHANICAL ROLLING IN HEAVY PLATE MILLSG. Sorgel (SIEMENS AG, Basic Industries Division, Process Engineering and Development, Erlangen, FRG)

C.12. PLATE MILL AND HOT STRIP MILL REVAMPING OF FORGES DE CLABECQM. HERINCKX*, Y. LECLERCQ** (* FORGES DE CLABECQ, BELGIQUE, *• CLECIM, COURBEVOIE, FRANCE)

C.I3. IMPROVEMENTS OF HYDROPLATE SYSTEM IN CHINA STEEL CORPORATIONY.S. Chen, T.S. Huang (Rolling Mill Department 1, China Steel Corp., KAOHSIUNG/TAIWAN)

C. 1 <f. AUTOMATION OF A PLATE MILL HOT LEVELLERA predictive levelling model in operation producing excellent resultsW.J. Edwards*, R. Johns**, G. Rozmus**, P.J. Thomas*, N.E. Thompson*** (* Industrial Automation Services, TORONTO,AUSTRALIA, ** Slab & Plate Products Division - BHP Steel International Group, WOLLONGONG, AUSTRALIA, *** CoatedProducts Division - BHP Steel International Group, SYDNEY, AUSTRALIA)

C. 15. DEVELOPMENT OF NEW HOT LEVELLER FOR PLATE MILLY. Yoshimatsu*, F. Hashizume**, T. Takeda*, T. Masui***, H. Goto**, K. Ushio* (* Sumitomo Metal Industries, LTD, Kashimasteel Works, Japan, ** Sumitomo Metal Industries, LTD, Osaka, Japan, *** Sumitomo Metal Industries, LTD, Central ResearchLaboratories, Amagasaki, Japan)

C16. STUDY OF HEAVY PLATE HOT LEVELLINGD. de MONLEON (Rolling Department, IRSID, MAIZIERES-LES-METZ, FRANCE)

D.I. DEVELOPMENT OF DIRECT QUENCHING METHOD FOR STEEL PLATEA. Otomo*, K. Takatsuka*, I. Takahashi**, Y. Obanya**, N. Akiyama**, Y. Kobayashi** (* Mechanical Engineering ResearchLaboratories, Kobe Steel, LTD, Hyogo, Japan, ** Kakogawa Works Kobe Steel, LTD., Hyogo, Japan)

D.2. AUTOMATIC CONTROL OF THE MULPIC PROCESS FOR ACCELERATED COOLING OF PLATESM. Groslambert**, J. Mignon*, J.F. Noville*, S. Wilmotte* (* Centre de Recherches Metallurgiques, Liege, Belgique, ** Forges deClabecq, Belgique)

D.3. ACCELERATED COOLING PROCESS FOR PLATESG. Guglielmetti*, M. Ghersi**, F. Catani***, P. Fontana*** (• N. ITALSIDER, TARANTO, ITALY, •* C.S.M., ROMA, ITALY*** ITALIMPIANTI, GFENOVA, ITALY)

DA. DEVELOPMENT OF EQUIPMENT FOR ACCELERATED COOLING OF PLATE DIRECTLY AFTER ROLLINGJ. Degenkolbe*, J. Mahn**, H.W. Marx***, G. Pietzko*, E. Raeder**** (* Technical Research Department, ** 3,7 m-Plate mill,*** Engineering Department, •*•• Quality Control, THYSSEN STAHL AG, Duisburg, West Germany)

D.5. MODERN LINE PIPE STEELS AND THE EFFECT OF ACCELERATED COOLINGH.G. Hillenbrand, W.M. Hof, B. Hoh (Mannesmannrohren-Werke AG, Dusseldorf, West-Germany)

D.6. PERFORMANCE OF THE WATER COOLING SYSTEM OF RAUTARUUKKI'S HOT STRIP MILLA. Nikula*, T. Hope**, L. Myllykoski**, R. Pietola** (* Rautaruukki OY, Research Centre, FINLAND, • • Davy McKee (Sheffield)Ltd., ENGLAND)

D.7. NEW CTC ON SOLMER HSM - DIVERSIFICATION OF THE FINISHED PRODUCT MECHANICAL PROPERTIES BY OPTIMIZINGTHE COOLING CONDITIONSB. de Lamberterie, H.P. Orsoni, G. Perrot, G. Serena (SOLMER)

D.8. CONTROL OF MECHANICAL PROPERTIES OF HOT ROLLED STRIP BY PREDICTION OF COOLING CONDITIONSG.A. Duit*, M. Economopoulos**, Th.M. Hoogendoorn*, A. Hurkmans*, N. Lambert**, J.F. Noville** (* Metallurgy DepartmentR & D Laboratories, Hoogovens Groep BV, IJmuiden, The Netherlands, ** Centre de Recherches Metallurgiques, Liege, Belgium)