HOT STRIP MILLS Mechanical Equipment - SMS group

1 HOT STRIP MILLSHOT STRIP MILLSM echanical EquipmentMETALLURGICAL PLANT andROLLING MILL TECHNOLOGYHot Rolling MillsSMS metallurgyHot STRIP MillsSMS DEMAG2 SMS Demag is the worldwide leading supplier of plantand Equipment for the iron and steel industry. Ourspectrum comprises both the supply of complete newplants and the modernization of existing years of experience and close cooperation withour customers in all continents are the cornerstonesof our teams of experienced engineers from thefields ofdesignprocess engineeringR&Delectrical and automation systemsmanufacturecontinually enhance our products to increase theiroperational dependability and maintenance ease.

2 Inour workshops we manufacture, assemble and testall key components before they are shipped to thesite. In addition, we offer our customers erection andcommissioning services including practice-orientedtraining of operating staff, qualified After Sales Ser-vice as well as know-how customers value our integrated solutions andeconomical Equipment as the basis for their , economicalSOLUTIONS3 CONTENTS23 Introduction, Contents45 Slab sizing press67 Hydraulic adjusting systems89 Mandrel-less coilbox1011 Drum-type shear1213 Crank-type shear1415 Descalers1617 Concepts for media distribution1819 Interstand equipment2021 Loopers2223 CVC PLUS technology2425 Laminar cooling system, edge masking2627 Compact cooling systems2829 Hot STRIP coilers3031 Polishing equipmentHot STRIP MillsSMS DEMAG4A slab sizing press in the roughing mill area offersdecisive advantages for more flexibility in hot STRIP pro-duction today and in the future.

3 Width reductions of upto 350 mm in one pass enable the number of differentcasting sizes in the spectrum of the continuous casterto be reduced to just a few standard widths. Slabswhose widths considerably exceed the required fin-ished- STRIP widths boost the throughput of the continu-ous casting facility. A special Short-Stroke operatingmode at the slab head and tail results in less croppinglosses and higher yield. Robust construction and oper-ational reliability are the key characteristics of the con-tinually enhanced design.

4 Compactness and smallmoving masses during the sizing process ensure justminor wear even after many years of DATAS izing force22,000 kNWidth reductionup to 350 mmDrive power4,400 kWFeed rateup to 300 mm/sSlab thicknessup to 280 mmSlab width650 to 2,300 mmSlab length4 to 12 mSlab temperature1,250 CThe essential technological advantage of the slab sizing press over a conventional edger besides the large width reduction is the distinctly betterthrough-forming of the slab right to its center. Theslab sizing press produces flatter dogbones leadingto reduced respreading and greater sizing efficiency.

5 The slab sizing press is ideally suited for integrationinto existing facilities. Thanks to our many years ofexperience, the press Equipment can be installedduring short shutdowns and precommissioned whileproduction is design and robust constructionClosed frame to accommodate the forces in thesizing pressPatented kinematicsTailor-made technology package Stop-and-Go modeSlab transport by means of position-controlledpinch rollsHydraulic balancingSLAB SIZING PRESSSLAB SIZING PRESSC omparison of sizingand edging pass Flat passFlat pass Edging passMinimalbulbous edgesMajorbulbous edges5No relative movements between slab and

6 ToolLong tool service livesOptimized tool contourEasy tool changesProven press driveEfficient tool coolingADVANTAGESL arge width reduction in one passFewer casting sizesHigher production of the continuous casterReduced slab storageCorrection of off-size slabsEasier direct rollingGreater production flexibilityBetter through-formingExtremely constant width over the slab lengthImproved width tolerance along the entire stripHigher specific coil weightShort-Stroke operating modeVariable slab width over its length, if demandedOPTIONS Flying modeTool changing deviceRECENT REFERENCES2005 Handan Iron & Steel, China2005 Maanshan Iron & Steel, China2005 Anshan Iron & Steel, China2004 Shougang Iron & Steel, China2000 Wuhan Iron & Steel (HSM No.)

7 2), China2000 Salzgitter Flachstahl, Germany2000 Ilva (TNA2), Italy1998 Ilva (TNA1), Italy1994 Sollac Fos-sur-Mer (Arcelor), France1989 ThyssenKrupp Steel (Beeckerwerth), GermanySlab sizing press(view on the exit side).Hot STRIP MillsSMS DEMAG6 MAIN DATA Slab thickness125 to 280 mmStrip width650 to 2,200 mmStrip thickness1 to 25 mmVertical adjusting systemsAdjusting speedup to 60 mm/s per sideAdjusting forceup to 8,000 kNHorizontal adjusting systemsAdjusting speedup to 12 mm/sAdjusting forceapprox. 50,000 kNFEATURESR obust designReliable and proven cylinder sealingDigital position measurementRedundant position and force measurement(in case of horizontal adjustments)Four-high reversing roughing stand with SYSTEMSH ydraulic ADJUSTING SYSTEMS for horizontal and vertical standsVERTICAL STANDSThe width of the STRIP from its head to its tail is con-trolled by means of hydraulic edger adjusting sys-tems.

8 The quick dynamic response of these systemsenables the fast corrective movements at the materi-al head and tail as required to minimize croppinglosses and to control the width over the length of therolled stock. Latest-generation edgers are fully hydraulic facilitieswithout any additional electro- Mechanical adjustingsystems a feature that reduces the amount ofmaintenance work REFERENCES2005 Handan Iron & Steel, ChinaE, R, F2005 Bhushan Steel & strips , IndiaE, R, F2005 Maanshan Iron & Steel, ChinaE, R, F2005 Handan Iron & Steel, ChinaE, R, F2005 Shougang Iron & Steel, ChinaE, R, F2004 Shanghai Meishan Corp.

9 , ChinaE, R2004 Taiyuan Iron & Steel, ChinaE, R, F2004 ThyssenKrupp Steel (Bruckhausen),GermanyR2004 Sahaviriya Steel Industries, Thailand R2002 Outokumpu Stainless, FinlandR2001 Wuhan Iron & Steel (HSM No. 1),ChinaR2000 Wuhan Iron & Steel (HSM No. 2),ChinaE, R, F2000 Shanghai Meishan Corp., ChinaF1999 CST (Arcelor group ), BrazilF1999 SSAB (Borl nge), SwedenE, R1998 Benxi Iron & Steel, ChinaE, R, F1997 PT Krakatau Steel, IndonesiaE1996 Hadeed, Saudi ArabiaF1996 China Steel Corporation, TaiwanE, R, F1996 EKO Stahl (Arcelor group ), Germany E, R, FE = edger, R = roughing mill, F = finishing millHORIZONTAL STANDSS trip thickness and STRIP travel control is accom-plished through hydraulic adjusting cylinders provid-ed in the roughing and finishing stands.

10 In coactionwith hydraulic sideguides and the associatedautomation system, horizontal adjusting systems inthe roughing stand minimize camber and wedge,and thus ensure the rolling of a straight transfer forward stands of a finishing mill are equippedwith hydraulic adjusting systems to safeguard stablestrip travel, while the close thickness tolerances ofthe finished STRIP are achieved mainly by means ofthe hydraulic adjusting cylinders of the rear finishingstands and suitable gage control. Hot STRIP MillsSMS DEMAG8 The coilbox arranged between the roughing standand the finishing mill of a hot rolling mill forms coilsof transfer bars, thus serving as both material andheat accumulator.