1 Layout CR Production up to Tinplate Processing

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444-v_d_0704_cold_rolling.ppt

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>1 Layout  CR Production up to  Tinplate Processing 4.1  Pickling Lines 1 Layout CR Production up to Tinplate Processing 4.1 Pickling Lines 4.2 CR Process 4.3 Surface Preparation Content 4. Cold Rolling

>2 4.  Layout CR up to Tinplate Processing 2 4. Layout CR up to Tinplate Processing

>3 4.1 Pickling Lines for HR Strip Descaling of HR strip   Bending 3 4.1 Pickling Lines for HR Strip Descaling of HR strip Bending with rolls (for thicker scale) Shot blasting Brushing Hydrochlorid acid Sulphuric acid Aqua regia (RSH-qualities)  Push-pull pickling line  Continuous pickling line

>4 4.2  Cold Rolling Process .... precision forming process Tolerances   Defined 4 4.2 Cold Rolling Process .... precision forming process Tolerances Defined surface topography (e.g. PRETEX) Material properties adjustable by - rolling - annealing - skin-passing - High energy consumption (drives, heat treatment) - Expensive plant engineering (multi-roll stands, bending, shifting of rolls)

>5 4.2  CR Technology Area of strip thickness covered by modern CRMs: 5 4.2 CR Technology Area of strip thickness covered by modern CRMs: 15 – 0.10 mm or 3 – 0.02 mm Roll stands: (2-high, 4-, 6-,....., 20-high) or combinations 2-/4-high, different WR diameters, tandem mills

>6 4.2   6-High with Cross-Crown-Control Alternative: -shifting and   bending 6 4.2 6-High with Cross-Crown-Control Alternative: -shifting and bending BUR IR WR

>7 4.2   Advantages of 6-High Stands  Improved flatness of the strip 7 4.2 Advantages of 6-High Stands Improved flatness of the strip Axial shifting of IR Simultaneous bending of IR Crossing of IR  Improved productivity (less wavy material, reduced starting phase) Regular control mechanism: WRB Tilting Zone cooling (CVC) Schedule free rolling SFR Covering wide range of width without great Reduced edge drop restrictions; positioning edges of IR exactly over/below strip edges: active width  Improved tool life, extension of rolling program length Cylindric rolls No special grinding  Reducing no. of circulating rolls rapidly

>8 4.2   12-Roll Application for Combined      8 4.2 12-Roll Application for Combined 4/12-Roll Stand Stabilized roll gap for high reduction (small WR diameter) - Foil production - Thin strip with reduced thickness tolerances

>9 4.2   20-Roll Stand - Very stiff stand  - Support rolls 9 4.2 20-Roll Stand - Very stiff stand - Support rolls - WR diameter down to 20 mm Sendzimir / Roon concept

>10 4.2 Adapted Concepts for the CR Process .....to optimise strip quality:  10 4.2 Adapted Concepts for the CR Process .....to optimise strip quality: Single-stand reversing mills with high-developed control concepts Two-stand cold skin-pass mill Two-stand compact reversing mill Fully continuous cold tandem mill

>11 1 Pickling line Tandem mill Batch annealing Temper mill Inspection places Galvanising line 11 1 Pickling line Tandem mill Batch annealing Temper mill Inspection places Galvanising line TAKO TKS 2 3 4 5 6 4.2 Layout of CR Mill Beeckerwerth, TKS

>12 Strip width    1000 – 2040 mm    12 Strip width 1000 – 2040 mm thickness (entry pickling line) 1.5 – 6.5 mm thickness (exit tandem mill) 0.3 – 4.0 mm Coilweight (entry pickling line) max. 36 t (exit tandem mill) max. 50 t Qualities: soft, unalloyed, up to high-strength steels Capacity: 2.060 Mio t/a Max. exit speed 1,400 m/min 4.2 TAKO Characteristics

>13 H A  Coil preparation B  Decoiler C  Shear D 13 H A Coil preparation B Decoiler C Shear D Welding E Stretch-Leveller F Pickling G Rinsing H Strip accumulator G F E D C A B 4.2 TAKO Pickling Line

>14 H  Strip accumulator  I  Trimming shear/inspection  J  90°-strip 14 H Strip accumulator I Trimming shear/inspection J 90°-strip guide K Tandem mill H I J K L L 2 coilers M Coil stock N Roll changing car O Roll grinding M N O 4.2 TAKO Tandem Mill and Roll Shop

>15 4.2 TAKO Emulsion System 15 4.2 TAKO Emulsion System

>16 4.2 TAKO Technical Features 5-stand mill with  6-high stands  WR shifting 16 4.2 TAKO Technical Features 5-stand mill with 6-high stands WR shifting with UC or CVC IR shifting for edge-drop control Roller bearings for all rolls (improved radial true run for all speeds) Pinch roll with hydraulic setting

>17 4.2 TAKO  Measuring Devices 17 4.2 TAKO Measuring Devices

>18 4.2 TAKO Limit Dimensions 18 4.2 TAKO Limit Dimensions

>19   PRETEX Shot Blasting 4.3  Topography of Rolls PRETEX / Conventional 19 PRETEX Shot Blasting 4.3 Topography of Rolls PRETEX / Conventional preparation

>20   4.3   Surface Structure of Sheet Material   20 4.3 Surface Structure of Sheet Material roll structure SBT sheet structure PRETEX roll structure sheet structure electrolytically galvanized hot-dip 100 µm

>21   4.3   PRETEX Process  - Pole + Pole Reactor 21 4.3 PRETEX Process - Pole + Pole Reactor Shaft protec- tion sleeve Copper head Shaft protec- tion sleeve Bus bars Electrolyte tank Chrome electrolyte PRETEX plant PRETEX-Reactor (schematically)

>22   Tool Lubricant  Sheet Tool Lubricant  Sheet Any conventional roughness 22 Tool Lubricant Sheet Tool Lubricant Sheet Any conventional roughness – Low homoge- neousness PRETEX-structure – High homoge- neousness 4.3 Friction between Steel Sheet and Tool