Tata Steel Limited

Tata Steel Limited, Tata Centre, 43, Jawaharlal Nehru Road, Kolkata 700 071Phone: 91 33 2288 7051 / 8251 Fax: 91 33 2288 5926, Toll free Helpline: 1800 345 8282versusad@gmail.comTata Steel Limited

Tata SteelLegacy of TrustContentsTata Steel is amongst the top-ten global steel companies with a crude steel production capacityof 26.5 million tonnes per annum (mtpa). A Fortune 500 Company, the Tata Steel Group is theworld’s second most geographically diversified steel producer, employing over 80, 000 people innearly 50 countries.The Group’s Vision is to be the world steel industry benchmark in “Value Creation” and “CorporateCitizenship” through the excellence of its people, its innovative approach and overall conduct. TheTata Steel Group recorded a turnover of US 26.13 bn in the year ended March 31, 2012.Tata Astrum1The Basket of Offerings2Process Flow3Leading Edge Technologies4Steel Making5Hot Strip Mill6LD#3 & TSCR Mill7Pickling and Skin Passing8Shearing Line9Quality & Process Control10Testing Parameters11A Multitude of Segments12Automotive13Lifting & Excavation14Railways15Projects & Fabrication16Tube Manufacturing17Spectrum18Product Range19A World of Benefits20More for You21Pan-India Distribution22Service Centres23Annexure24

Tata Astrum, HR sheets & coils from TataSteel, is the new star in the manufacturingindustry that will redefine the norms of themarket by virtue of its impeccable quality andbest-in-class service offerings.Hot rolled coils and sheets have been thebackbone of the infrastructure andmanufacturing sector for years now. TataAstrum shall strive to support the growth inthese sectors by addressing the unmet needsof customers and providing end to endsolutions. With its wide range of products, TataAstrum can serve customers from differentsegments viz. Automotive, Railways, YellowGoods, Agriculture, Fabrication, etc.TheBasket ofOfferings1 Wide Range of grades for a host ofapplications Pan-India network of distributors to serveyou at your convenience Steady availability in various thickness &width combinations Cut-to-length sheets/slit coils from certifiedservice centers Product Marking to ensure sourceauthenticity Product Application Engineer Support torecommend the correct grade and usage Test certificates with mechanical properties Customer Engagement & KnowledgeSharing Programs2

LD#3 &TSCR* RouteHSM* RoutePROCESSFLOWRAW MATERIAL TO END PRODUCTLeading EdgeTechnologiesFrom steel making to final finishing, the entireproduction line incorporates state - of-the -arttechnologies and processes that make Tata Astrum abest-in-class product.* HSM - Hot Strip Mill3* TSCR - Thin Slab Caster & Rolling Mill

Steel makingThe first level of differentiation takes place in the steel makingshop is to meet the variety of customer requirements throughappropriate grade chemistry.Our steel is made and cast to the requisite parameters in LD2 &Slab Caster (Steel-Making & Casting Shop). The shop isequipped with all modern facilities to be able to produce thebest quality steel adhering to stringent quality parameters.It has the following facilities: Desulphurization stations for low-sulphur steel Argon stirring and alloy additions at ladle furnace Degassing facility (RH) for low residuals and gas levels,required for IF grade steels One vertical bending (improved cleanliness) and twocurved casters A semi-automatic scarfing machine for inspectingsurface level defectsLD#2 & Slab Caster is capable of producing a very widerange of steels – from low carbon steels to special alloy andhigh carbon steels.LD#2Hot Strip MillHot Strip MillAfter the steel is cast into slabs, it is transferred to the Hot Strip Mill (HSM) where it is rolled tothe desired thickness & width. The rolling and subsequent cooling is done in a manner so asto ensure that the final product (HR coil) attains its requisite mechanical properties (as perdesign parameters).In order to meet the quality and volume requirements the HSM is equipped with 3 Re-heatingFurnaces, 1 Reversing Mill and 1 six-stand finishing mill (4-Hi).Slab CasterThe unit is equipped with: Automatic controls to ensure proper heating of slabs Automatic Width Control (AWC) facilitates width control and adjustments based on onlineinputs with the help of activated hydraulic cylinders Coil-box for temperature homogenization leading to uniformity in properties along the length Profile Contour & Flatness Control (PCFC) helps in maintaining perfect flatness throughonline monitoring & adjustment Automatic Gauge Control (AGC) ensures consistent thickness by hydraulic gap and gaugecontrol Continuous Variable Crown (CVC) ensures minimal & uniform crown throughout thelength of the coil56

Pickling andSkin PassingPICKLING & OILINGHot Rolled coils have an oxide film or scales on theirsurface. Pickling cleans these scales to give the hotrolled coil surface a better look and finish.Run out Table at TSCRLD#3 & TSCR MillThin Slab Caster & Rolling MillUnique Features to ensure best-in-class product:The Thin Slab Caster & Rolling Mill (TSCR) is thenewest addition to the Flat Products Complex. Themill was commissioned on the 14th of February’12and is equipped with all the latest technologies tocater to different requirements of the customers. Vertical Caster equipped with Liquid CoreReduction and Dynamic Soft Reduction forbetter segregation controlIt is an integrated shop where steel is made in thesteel making shop (LD#3), then cast and rolledcontinuously. Unlike the HSM, there is no slab stagein this mill and thus it reduces the time lag.LD#3 &TSCR has the following facilities: 2 De-sulphurization Stations, 2 BOF Converters,2 Online Purging (OLP) Stations & 2 SingleStrand Casters Two tunnel furnaces and one emergency cropshear One 4 Hi 6 ( 1) stand finishing mill with laminarcooling facility followed by 2 down-coilers7 Calcium treatment for higher steelcleanliness Mill capable of rolling thinner (1 mm min) andwider (1680 mm max) sectionsThrough a continuous process, the HR coil isuncoiled and sent through a series of inorganic acidbath (hydrochloric or sulphuric acid) that removesthe oxides/scales (rust) from the surface (top &bottom). Post the pickling process, the strip isproperly rinsed and then oiled. Pickling and oilingprocess enhances the surface finish and improvesthe shelf life of steel. Pickled and oiled steel sheetsand coils are ideal for applications that require aneven finish.PICKLING, OILING & SKIN PASSINGSkin-passing of the coils is done post the pickling &oiling process. Skin passing is a light cold rollingoperation which suppresses the appearance ofstretcher strain and minimizes coil break duringuncoiling and subsequent processing. It produces asmooth surface, makes the thickness of the coiluniform and does minor corrections in mechanicalproperties.The skin-passing process involves passing the coilthrough a set of rolls. The rolls induce a predefinedamount of force on the HR surface which makes thesurface smoother and corrects the yield pointphenomenon.Tata Steel supplies HRPO & HRSPO steel from its inhouse facilities in CRM Bara as well as from itsEPAs.CRM, Bara Specifications for HRPO:ParametersValuesStrip Thickness1.2mm to 6mmStrip Width700mm to 1650mmWeight30 T (max)Coil I/D762mmCoil O/D1000mm to 2150mmBMW, Gamharia Specifications for HRPO:ParametersValuesStrip Thickness1.2mm to 5mmStrip Width900mm to 1500mmWeight30 T (max)Coil I/D610 mmCRM, Bara Specifications for HRSPO:ParametersValuesStrip Thickness1.2mm to 3.2mmStrip Width800mm to 1270mmWeight28 T (max)Coil I/D610 mmCoil O/D2150mm (max) Dynamic Continuous Variable Crown (CVC)and Work Roll Bending (WRB) technology forbetter control of profile, flatness and contourof rolled strip Dynamic Disturbance Compensators (DDC)for improved thickness tolerances Hydraulic Gap Control (HGC) for roll gapadjustment & Automatic Gauge Control (AGC) Edge masking on the run-out table forhomogeneous mechanical properties8

Shearing LineQuality &Process ControlThe Shearing Line at the Hot Strip Mill enablesTata Steel to serve customers who require HotRolled Sheets and Plates of various grades.The Shearing Line is about 100 metres long withthe following facilities : uncoiler, 5 roll flattener, 9& 17 roll levellers, flying shear, conveyor belts,stackers, discharge table and weigh bridge in acontinuous line. The line is controlled by a highlyautomated system employing control desks,sensors and transducers, programmable logiccontrollers and man-machine interfaces whichare integrated with level-3 control systems.All the production lines are equippedwith the latest technologies and haverobust quality control mechanismsto check any abnormality in theprocess which might hamper theproduct quality.C o n t i n u o u s Va r i a b l e C r o w n ,Thickness Control, Profile Controland Flatness Control (PCFC) andAutomatic Width Control (AWC) aresome of the features which enable usto ensure that the material producedmeets customer needs.Automated systems ensure proper dimension ofthe product. The line is equipped with a manualinspection provision where trained inspectorsscreen the product for any abnormality. Otherfeatures of the Shearing Line include automaticproduction recording of plates and bundles.Inspection:Since the surface of the hot rolled steel iscritical to any application, we have dedicatedsurface inspection systems to ensure topquality. These include :The ProcessCrop ShearStripAutoCentreInspection Mirror9RL5RFFlying Shear17RLLProcess Control Chart OnlineUncoilerPRPRMechanicalGuidesPRMeasuringRoll StandSPINDLE SHAPE FINISHING MILLWORK ROLLSEntry PRGross Weigh StationBelt ConveyorStaStaStaStaSta Online Surface Inspection System (SIS):The system inspects coils duringprocessing and helps detect the surfacequality correctly. This improves accuracyand reduces decision-making time. Manual Inspection – Certain grades of coilswhich are used for specialised operationsand have extreme critical surfacerequirements are uncoiled and manuallyinspected for any defects.*THICKNESS CONTROLLERC V C SystemLegends:RL - Roll LevellerPR - Pinch RollPCFCF1F3F4F5F6THICKNESS CUMPROFILE METERWORK ROLL BENDINGThickness ControlStorage of Sheet/PlateSHAPE METERF1RF - Roll Flattener, RL - Roll Leveller, PR - Pinch Roll, Sta - Stacker9F2F2F3F4F5* Only coils of certain grades and meant for certainapplications are checked manually.F6FINISHING MILLPCFC System10

Impact TestingBend testingTestingParametersChemical Composition:The chemical composition of the steel is tested at the steelmaking stage and the results are mentioned in the testcertificate.Elongation:The elongation of a material is basically the percentagechange in the length of the material when tension isapplied along the length. All our materials are tested fortheir elongation and the value is mentioned in the testcertificate.Tensile Testing :Tensile testing helps in finding out the maximum tensileload that the material can bear. It helps in specifying theUTS(1) as well as YS(2) of the material.Tensile TestingWrichsen cupping testingHardness testingImpact Testing:It helps in establishing the impact load bearing capabilityof the material, that is, the force required to fracture it. It isa measure of the toughness of the material.Bend Test:The bend test essentially measures a metal's ductility.Ductility defines how easily a metal can bend withoutbreaking. The higher the ductility of a metal, the more itcan bend without breaking or becoming deformed fromits original shape. Our labs are equipped with themachinery to carry out the bend test and provide thetested value on the Test Certificate.(1)(2)11Ultimate Tensile StrengthYield Strength