Institut für Metallurgi 3 Hot Rolling Werkstoffumformung Content

Institut für Metallurgi 3. Hot Rolling Werkstoffumformung Content 3 3. 1 3. 2 3. 3 3. 4 3. 5 3. 6 3. 7 C Hot Rolling Hot rolling of strip Technology topics Basic methods Layouts of HSMs Descaling Optimising rolling conditions Finishing shop Roll materials TFV Rolling of flat material 1

Institut für Metallurgi 3. 1 Rolling Flat HR Material convent. Reheating furnaces Slab Descaling Roughing / Edging / Descaling Transfer bar Crop shear / Descaling Finishing train Strip (fin. ) Cooling Coiling Werkstoffumformung 1160 – 1350 °C 1130 – 1300 °C 900 – 1150 °C 850 – 980 °C <400 – 830 °C Critical demands - Range of reduction - Width range - Thickness tolerances - Crown - Flatness Delivery: ½ ASTM - Surface Trend: ¼ ASTM C Hot Rolling TFV Rolling of flat material 2

Institut für Metallurgi Werkstoffumformung 3. 1 HSM Layout Roughing train Descaler 1 PT-furnaces Edge heater Transfer table TT Slab sizing press Finishing mill F 1 -F 7 Measuring features Coilers TT Flying crank Entry guide crop shear Descaler 2 Laminar cooling table Layout HSM TKS Beeckerwerth C Hot Rolling TFV Rolling of flat material 3

Institut für Metallurgi Werkstoffumformung 3. 1 Oxidation Grade. . . depends on • Material grade • Heating temperature • Heating time • Atmosphere in the furnace . . . and reduced by + lowered heating temperature + reduced running time for the slab + reduced oxygen atmosphere C Hot Rolling TFV Rolling of flat material 4

Institut für Metallurgi 3. 1 Kinematics of Slab Sizing Press Werkstoffumformung Rod Pinchroll unit Slab Die sled Press sled Feed cylinder C Hot Rolling Screwdown spindles TFV Rolling of flat material 5

3. 1 Temperature Deviation over Strip Length C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 6

Institut für Metallurgi Werkstoffumformung 3. 1 Heat Hoods TKS AG Beeckerwerth C Hot Rolling TFV Rolling of flat material 7

Institut für Metallurgi Werkstoffumformung 3. 1 Coilbox furnace, TKS Bochum C Hot Rolling TFV Rolling of flat material 8

3. 1 Surface Defects on Strip Institut für Metallurgi Werkstoffumformung . . . coming from HSM can be caused by • Faults at the rollers Breakouts, cladded material • Defects at descaling and cooling Worn nozzles, reduced water flow, . . . • Defects at rolls • Built-up at pinch rolls of coiler C Hot Rolling TFV Rolling of flat material 9

3. 2 Basic Methods for HR of Steel Institut für Metallurgi Werkstoffumformung High-temperature rolling Complete recrystallisation during deformation; start of grain growth at high temperatures, continuing during cooling down; coarse austenite into likewise coarse ferrite-perlite. Normalising rolling Finishing close above γ-α-transformation, complete recrystallisation before transformation of the fine austenite into fine ferrite-perlite. Thermo-mechanical rolling Finishing in area of transformation or 2 -phases area; no recrystallisation; extremely fine grain; good combination of of tensile strength and ductility C Hot Rolling TFV Rolling of flat material 10

Institut für Metallurgi 3. 2 Iron-Carbon Diagram Werkstoffumformung °C High-temperature rolling Stable austenite Normalizing rolling N Thermochemical rolling TM Unstable austenite Pearlite and secondary ferrite cementite Dual-phase region % C C Hot Rolling TFV Rolling of flat material 11

Institut für Metallurgi 3. 3 Generations of HSMs Gen. I 30 ies Specific coil weight kg/mm width Coil weight t Exit speed m/s Capacity Mio t/a HSM Dortmund Gen. (HOESCH) Gen. II III 60 ies end 60 ies 1958 Commissioning 6 stands 45, 000 16 -25 10 27 -35 t/month 1961 100, 000 max. 15 max. 40 max. 45 t/month 1998 310, 000 max. 12 max. 23 t/month 1. 5 -2. 5 3 – 4 5 – 6 Closed down: 2002 Sold to China C Hot Rolling Werkstoffumformung Gen. V IV end 70 ies present • Reduction of investment costs • Lowering energy consumption • Raising flexibility in production spectrum • Adaption of process technology (Quelle: Hoesch Archiv. Zeitschrift „Werk und Wir“. Ausgabe 10/1958) TFV Rolling of flat material 12

Institut für Metallurgi 3. 3 Designing HSMs Werkstoffumformung Capacity Type and concept of plant Product spectrum Plant type Mechanical and electrical dimensioning Product quality · · C Hot Rolling Plant type Mechanical and electrical dimensioning Configuration of adaptive systems Automatization and models TFV Rolling of flat material 13

3. 3 Type Selection of HSMs Institut für Metallurgi Werkstoffumformung Restrictions because of. . . … mill Roll force Roll torque Motor load . . . product . . . process · · C Hot Rolling Finishing temperature Relative reduction Rolling strategy Strip speed (transport of head end) Correlation between speed and draft (chatter) Strip flatness Bite angle Flattening of work rolls TFV Rolling of flat material 14

Institut für Metallurgi Werkstoffumformung 3. 3 Modern Concepts of HSMs C Thin-slab casting machine CB Coilbox CS Crop shear DC Downcoiler DS Descaler E Edger FM Finishing mill HC Hot coiling furnace LC Laminar cooling R Rougher RR Reversing rougher RHF Roller hearth furnace SSP Slab sizing press TS Transfer system WBF Reheating furnace C Hot Rolling TFV Rolling of flat material 15

Institut für Metallurgi 3. 3 DSC-Process; Comparison of Costs C Hot Rolling Werkstoffumformung TFV Rolling of flat material 16

3. 3 Operating HSM of 1 st and 5 th Generation Institut für Metallurgi Werkstoffumformung Operator‘s business at HSM 1 st generation HSM 5 th generation (Source: Hoesch Archiv. Zeitschrift „Werk und Wir“. Ausgabe 10/1958) Source: SMS DEMAG C Hot Rolling TFV Rolling of flat material 17

Institut für Metallurgi Werkstoffumformung 3. 3 Layout of HSM Beeckerwerth Descaler Furnaces C Hot Rolling Rougher Slab sizing press Cover hood Finishing mill Shear Descaler Edge heater Down coiler Cooling table TFV Rolling of flat material 18

Institut für Metallurgi Werkstoffumformung 3. 3 PT Furnaces TKS Beeckerwerth Throughput / furnace: 250 t/h Temp. furnace chamber: 1350 °C Drop-out temp. of slab: 1250 °C Inner width: 10, 6 m Length of Furnace 33 m Convection zone: 7 m Heating zone: 9 m Equalizing zone: 8 m Fuel: mixed gas Feeding speed: 14 m/h C Hot Rolling TFV Rolling of flat material 19

Institut für Metallurgi Werkstoffumformung 3. 3 Slab Sizing Press Slab sizing press SSP TKS Beeckerwerth C Hot Rolling Slab width: Slab thickness: Slab length: Slab temperature: Width reduction: Pressing force: Length per stroke: Stroke frequency: Slab speed: Tool changing time: 750 - 2100 mm 265 mm 3, 6 - 10, 0 m 1050 - 1280 °C max. 300 mm 30 MN 400 mm 30 /min 200 mm/s 10 min TFV Rolling of flat material 20

Institut für Metallurgi 3. 3 4 -High Reversing Stand V 2 Rougher V 2 TKS Beeckerwerth Werkstoffumformung 1080 - 1225 mm 1350 - 1550 mm 2250 mm Morgoil 2 x 7500 k. W max. 45 MN Edger Roll diameter: Nominal power: Roll force (adjust. ): C Hot Rolling 4 -high stand Diameter WR: Diameter BUR: Barrel length: Bearings BUR: Nominal power: Roll force (adjust. ): 1000 - 1100 mm 2 x 1500 k. W max. 7 MN TFV Rolling of flat material 21

Institut für Metallurgi Werkstoffumformung 3. 3 Roller Covers C Hot Rolling TFV Rolling of flat material 22

Institut für Metallurgi Werkstoffumformung 3. 3 Edge Heater EH power Electrical power Thermal power 2, 3 MW 2 x 680 k. W gap 140 mm Transfer bar data Gap time min. 5 s Bar speed 0, 3 - 2, 0 m/s Bar shift Length Thickness Width C Hot Rolling +-50 mm max. 80 m 35 - 60 mm 750 - 2. 080 mm TFV Rolling of flat material 23

Institut für Metallurgi 3. 3 Edge Heater (2) Werkstoffumformung °C 940 900 Edge heater off Edge heater on 860 tail end middle head end Finishing temperature, IF-steel 1486 x 4, 08 mm C Hot Rolling TFV Rolling of flat material 24

Institut für Metallurgi Werkstoffumformung 3. 3 Descaler C Hot Rolling TFV Rolling of flat material 25

Institut für Metallurgi Werkstoffumformung 3. 3 Finishing Mill Diameter WR F 1 -F 4: F 5 -F 7: Diameter BUR: Driving power: Rolling speed: Roll gap setting: Looper: CVC: SFR: 712 - 783 mm 674 - 718 mm 1348 - 1533 mm 45, 7 MW max. 15 m/s hydraulic power operated Stands F 2 - F 5 Stands F 5 - F 7 FM TKS Beeckerwerth C Hot Rolling TFV Rolling of flat material C 19 26

Institut für Metallurgi Werkstoffumformung 3. 3 Cooling Roller Train Laminar cooling: 64 m Spray cooling: 33 m Water pressure: Laminar: 2 bar Spray: 4, 5 bar Water flow max. : 8400 m 3/h No. of groups Laminar: 20 Spray: 6 Closed circuit cooling C Hot Rolling TFV Rolling of flat material C 20 27

Institut für Metallurgi Werkstoffumformung 3. 3 Downcoilers 3 wrapper roller short stroke hydraulic C Hot Rolling TFV Rolling of flat material C 21 28

Institut für Metallurgi 3. 3 Product Mix Beeckerwerth, 2001 Carbon steels Microalloyed steels Others Werkstoffumformung Unalloyed construction steels Wheel qualities Tube qualities Tin plate Soft cold rolled qualities IF-steels C Hot Rolling TFV Rolling of flat material C 22 29

Institut für Metallurgi 3. 3 Characteristic Data of HSM Beeckerwerth Werkstoffumformung Slab Width: Thickness: Max. length: 650 – 2090 mm 150 – 260 mm 10 m Transfer bar Thickness: 40 - 60 mm Strip Width: Thickness: Coil Max. weight: 36 t Specific coil weight: 23. 5 kg/mm 650 – 2030 mm 1. 5 – 25 mm Max. rolling speed: 15 m/s Main drives RM and FM: 76 MW Capacity: C Hot Rolling 430, 000 t/month TFV Rolling of flat material 30

Institut für Metallurgi Werkstoffumformung 3. 3 HSM Bochum Soaking pit Rev. rougher Coilbox Entry guide Finishing mill Crop shear Furnaces WB WB PT Descaler Heavy edger Descaler Furnaces C Hot Rolling Coilbox furnace Rougher Slab sizing press Edging stand Descaler Cover hood Coiler Cooling train Finishing mill Shear Descaler Edge heater Down coiler Cooling table TFV Rolling of flat material 31

Institut für Metallurgi Werkstoffumformung 3. 3 Product Mix TKS Bochum, 2001 Ultra low carbon steel 5% 2% Others Low carbon steel 53% Stainless steel 31% 5% 4% H. S. L. A. Carbon steel C Hot Rolling TFV Rolling of flat material 32

Institut für Metallurgi 3. 3 Characteristic Data of HSM Bochum 1 st commissioning: Werkstoffumformung 1968 Slab Width: Thickness: Max. length: 600 – 1620 mm 130 – 260 mm 9. 6 m Transfer bar Thickness: 30 - 50 mm Strip Width: Thickness: Coil Max. weight: 32 t Specific coil weight: 20. 3 kg/mm 600 – 1620 mm 1. 5 – 20 mm Max. rolling speed: 15. 6 m/s Main drives RM and FM: 86 MW Capacity: C Hot Rolling 300, 000 t/month TFV Rolling of flat material 33

Institut für Metallurgi Werkstoffumformung 3. 3 HSM Bremen 4/4 continuous HSM approx. 900 m Finishing Roughing Walking beam furnaces Coil conveyor Run-out Descaler 2 table Heat cover Crop Coiler hoods shear 1 -3 V 1 S 3 V 3 S 4 V 4 S 6 V 6 Descaler 1 Vertical scale breaker C Hot Rolling Laminar cooling Coil tilter TFV Rolling of flat material 34

3. 3 Institut für Metallurgi Characteristic Data of HSM Bremen 1 st commissioning: Werkstoffumformung 1968 Slab Width: 560 – 2200 mm Thickness: 200 – 225 mm Length: 3. 6 - 15 m Strip Width: Thickness: Coil Max. weight: 45 t Specific coil weight: 23. 6 kg/mm 600 – 2150 mm 1. 5 – 25 mm Max. rolling speed: 23. 6 m/s Main drives RM and FM 127 MW Capacity: C Hot Rolling 350, 000 t/month TFV Rolling of flat material 35

Institut für Metallurgi 3. 3 Characteristic Data of HSM Baoshan 1 st commissioning: Werkstoffumformung 2000 Slab Width: 900 – 1930 mm Thickness: 210 – 250 mm Length: max. 12 m Strip Width: Thickness: Coil Max. weight: 43. 4 t Specific coil weight: 23. 0 kg/mm 600 – 1900 mm 1. 2 – 25. 4 mm Max. rolling speed: 23. 6 m/s Main drives RM and FM: 140 MW Furnaces: 420 t/h each Capacity: C Hot Rolling 350, 000 t/month TFV Rolling of flat material 36

Institut für Metallurgi Werkstoffumformung 3. 3 HSM Baoshan Shear Roughing Finishing mill Finishing shop Coiler Furnaces Roll shop Roller cooling train Slab stock C Hot Rolling TFV Rolling of flat material 37

Institut für Metallurgi 3. 3 Werkstoffumformung HSM Chiba C Hot Rolling TFV Rolling of flat material 38

Institut für Metallurgi 3. 3 Welding Unit in HSM Chiba 3 C Hot Rolling Werkstoffumformung TFV Rolling of flat material 39

Institut für Metallurgi 3. 3 CSP Technology Basic Principle 1 Casting machine C Hot Rolling Werkstoffumformung 2 Soaking furnace 3 Rolling mill TFV Rolling of flat material 40

Institut für Metallurgi 3. 3 Temperature Profile; Single-Strand CSP Plant Werkstoffumformung Caster Soaking furnace 1600 Liquidus Solidus 1500 Temperature in °C Core Average 1200 Coiler Thin-slab thickness 50 mm Thin-slab width 1600 mm Casting speed 5. 5 m/min 1400 1300 Cooling line Hot strip mill 1100 °C 1100 1000 Surface 900 800 700 600 500 0 C Hot Rolling 20 40 50 80 100 120 140 160 Distance from mold level in m 180 200 220 240 TFV Rolling of flat material 41

Institut für Metallurgi 3. 3 TKS CSP-Plant Start-up 1999 Capacity 2, 400, 000 t/a Werkstoffumformung Continuous caster Thickn. of slab: 63 -48 mm Casting speed: St. W 24 5. 5 m/min Tunnel furnace C 75 4. 5 m/min Length 240 m Max. slab temp. 1150 °C Finishing train No. of stands 7 Strip width 900 -1600 mm Strip thickness 0. 8 -6. 4 mm Final thickn, min. St. W 24 0. 8 mm C 75 1. 3 mm Max. rolling speed 20 m/s C Hot Rolling TFV Rolling of flat material 42

Institut für Metallurgi 3. 3 Saldanha Steel; Process Route C Hot Rolling Werkstoffumformung TFV Rolling of flat material 43

Institut für Metallurgi 3. 3 Saldanha Steel; Layout ISP C Hot Rolling Werkstoffumformung TFV Rolling of flat material 44

3. 3 Saldanha Steel; flow sheet of ISP C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 45

Institut für Metallurgi 3. 3 Saldanha Steel; Roughers C Hot Rolling Werkstoffumformung TFV Rolling of flat material 46

Institut für Metallurgi 3. 3 Saldanha Steel; 4 -high FM C Hot Rolling Werkstoffumformung TFV Rolling of flat material 47

Institut für Metallurgi 3. 3 Saldanha Steel; Downcoiler C Hot Rolling Werkstoffumformung TFV Rolling of flat material 48

Institut für Metallurgi 3. 3 CSP-Plant (3 -strand) Essar Steel - 2 strands for 2. 5 mio t/a, 3 – 3. 6 mio t/a - 55 and 80 mm slab thickness - 950 -1680 mm width - 1. 0 - 25. 4 mm thickness - FM all stands hydraulic adjusting systems WR bending CVC plus hydraulic loopers (F 1 -F 4) differential-tension loopers (F 5 -F 6) WR cooling systems C Hot Rolling Werkstoffumformung Conventional structural steels Tube/pipe grades Silicon steels DP steels TFV Rolling of flat material

3. 3 Greenfield Minimill Severcorr LLC, Mississippi, USA C Hot Rolling TFV Rolling of flat material Institut für Metallurgi Werkstoffumformung

3. 3 Compact 4 -high Steckel Mill Institut für Metallurgi Werkstoffumformung Coiler furnace Hot coiler mandrel Crop shear Descaler Gauges temperature thickness profile C Hot Rolling 4 -high reversing stand TFV Rolling of flat material Laminar cooling Section, coiler

3. 3 Steckel Coiling Furnace (Principle) VAI C Hot Rolling TFV Rolling of flat material Institut für Metallurgi Werkstoffumformung

3. 3 Steckel Rolling Mills SMS Siemag C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 53

3. 3 Temperature and Roll Force for a Steckel Finishing Stand h, T Institut für Metallurgi Werkstoffumformung h, T Profil Roughing stand Laminar cooling transfer bar Downcoiler thickness: 29 mm Strip speed in m/s 8 20. 4 0 34 Total roll force in MN 0 1100 Delivery side temperature in °C 800 C Hot Rolling 13. 2 8. 8 5. 6 4. 2 3. 5 3. 0 Thickness, in mm TFV Rolling of flat material 54

3. 3 Hot Flow Strength in a Steckel Mill (Rough. and Fin. ) Institut für Metallurgi Werkstoffumformung Austenitic stainless steel AISI 304 and carbon steel SAE 1015 Hot yield stress in N/mm 2 500 SAE 1015 / C 15 400 AISI 304 / X 5 Cr. Ni 189 300 200 j = 0. 3 (logarithmic strain) 100 j = 10/s (logarithmic strain rate) 0 700 800 900 1000 1200 1100 Temperature °C Fin. C Hot Rolling Rough. TFV Rolling of flat material 55

Institut für Metallurgi 1 Single-stand Steckel mill with roughing mill 3. 3 Concepts for Steckel Mills FM CS DS HC 1 DS E RR FM HC 2 Werkstoffumformung LC WBF DS E RR DC WBF 2 Tandem-stand Steckel mill with roughing mill FM CS DS HC 1 DS E RR FM HC 2 LC DC WBF 3 Single-stand Steckel mill without roughing mill DS CS HC 1 E FM HC 2 Walking-beam furnace Descaler Edger 4 -high reversing roughing mill CS Drum-type crop shear HC 1/2 Hot coiler 1/2 FM 4 -high reversing Steckel finishing mill LC Laminar cooling section DC Downcoiler WBF 4 Tandem-stand Steckel mill without roughing mill DS CS HC 1 E FM HC 2 WBF C Hot Rolling TFV Rolling of flat material 56

3. 3 Production Capacity for Steckel Mill with one fin. Stand for RSH C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 57

3. 3 Production capacity of a Steckel mill 3. 3 Production Capacity for Steckel with 2 finishing stands for stainless steel Mill with two fin. Stand for RSH C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 58

3. 3 Measured wear curves of CVC rolls C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 59

Institut für Metallurgi 3. 3 Typical product mix of CRM C Hot Rolling Werkstoffumformung TFV Rolling of flat material 60

Institut für Metallurgi 3. 3 TGHR-Production with Adapted Pickling Line Werkstoffumformung CSPCasting Machine HSM Annealing Pickling Temper mill Leveller or Temper mill CRM C Hot Rolling TFV Rolling of flat material 61

3. 3 Technology packages for TGHR Institut für Metallurgi Werkstoffumformung • Automatic level control ALCDynamic actions, esp. during feeding and tailing out; FFC (feed-forward-control) • Improved flatness control AFC extended to front stands; improved process model for flatness and profile; shifting startegies for CVC • High-speed thickness control Hydraulic AGC system (high dynamics) - resistance to mistakes in set-up - constant mass flow - high precision of stand modelling • Mass flow and tension control Fast correction of differences: hydraulic looper systems, feedback control circuits tension: mechanics with low-inertia • Roll gap lubrication C Hot Rolling Surface quality, roll wear and roll forces TFV Rolling of flat material 62

3. 3 Semi-endless and Endless Rolling with CSP Concept Institut für Metallurgi Werkstoffumformung Semi-endless rolling concept Endless rolling concept C Hot Rolling TFV Rolling of flat material Additional features C 48 63

3. 3 CSP-Concepts: „Batch“-, Semiendless and Endless Rolling Institut für Metallurgi Werkstoffumformung CSP-Concept for Batch-Rolling Thin-slab Casting Roller Hearth Furnace Rolling Mill Laminar Cooling CSP-Concept for Semi-Endless-Rolling Thin-slab Casting Roller Hearth Furnace Rolling Mill Downcoiler Laminar Cooling Downcoiler or Rotorcoiler CSP-Concept for Endless-Rolling Thin-slab Casting Roller Hearth Furnace Additional features C Hot Rolling Mill Flying shear TFV Rolling of flat material 64

3. 3 Arvedi ESP Mini mill (2009) Institut für Metallurgi Werkstoffumformung HR products Steel Grade DD 12 0. 80 – 10. 0 mm S 235 JR 0. 85 – 12. 0 mm S 700 MC 1. 80 – 8. 0 mm DP 600 1. 20 - 5. 0 mm DP 1000 C Hot Rolling Thickness 1. 50 – 5. 0 mm Arvedi ESP mini mill is the world‘s first continuous thin slab casting / hot strip rolling facility. HR thickness of 0. 8 mm with a width of 1540 mm is part of the production program. TFV Rolling of flat material 65

3. 3 Arvedi ESP Mini mill (2009) Institut für Metallurgi Werkstoffumformung Arvedi ISP (Line 1) 1. 0 -1. 5 miot/a) Slab width Mould thickness Slab thickness max. casting speed Mass flow 1250 mm 75 mm 55 mm 7. 0 m/min 3. 7 t/min Arvedi ESP (Line 2) Fully continuous line, HR thickness > 0. 75 mm, ~ 1. 5 -2. 5 miot/a) Slab width Mould thickness Slab thickness max. casting speed Mass flow 1500 mm 100 mm 80 mm 5, 3 m/min 5. 2 t/min 7. 0 m/min 6. 8 t/min C Hot Rolling TFV Rolling of flat material 66

3. 3 Arvedi ESP Mini mill (2009) Institut für Metallurgi Werkstoffumformung Caster/Roughing C Hot Rolling TFV Rolling of flat material 67

3. 3 Arvedi ESP Mini mill (2009) Hood Cover and Induction Heating of Transfer Bar C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 68

3. 3 Arvedi ESP Mini mill (2009) C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 69

3. 3 Arvedi ESP Mini mill (2009) C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 70

Institut für Metallurgi 3. 3 Endless Rolling Essential steps Advantages Crucial C Hot Rolling Werkstoffumformung Rolling speed about 20 m/s (austenite region even for ultra thin strip possible) - No acceleration / deceleration effects - Improved homogenity over length - Maximisation of mill working ratio - Efficient and affordable joining techniques Kawasaki: inductive welding NSC: laser welding - Coiling techniques - WR cooling TFV Rolling of flat material 71

Institut für Metallurgi 3. 4 Strip Casting Werkstoffumformung Eurostrip C Hot Rolling TFV Rolling of flat material

Institut für Metallurgi 3. 4 Strip Casting (BCT) Werkstoffumformung Model of the pilot system in Peine C Hot Rolling TFV Rolling of flat material 73

3. 4 Strip casting (BCT) Institut für Metallurgi Werkstoffumformung HSD-steel-interior (seat) Fe-Mn-Al-Si-steel - Exeptional properties TS 1000 – 1350 MPa YS 600 – 1100 MPa ER 50 – 17 % Adaptable for applications for crash-relevant components: Part: Side member of module seat Material: HSD 600 Weight reduction: 30 % (0. 6 kg/car) ü Crash demands as a component and test drive fulfilled! C Hot Rolling TFV Rolling of flat material 74

Institut für Metallurgi 3. 4 Strip casting (BCT) Werkstoffumformung HSD-Stahl Seitenaufprallträger Potential analysis (Audi AG) Serial part: HCT 780 XD, 1. 25 mm Test: Pile set test, comparison of force-way Crash performance: improved using HSD 1100, 1. 05 mm adaption of geometry Weight reduction: 17 % (230 g/part) HCT 780 XD 1. 25 mm HSD 1100 1. 05 mm C Hot Rolling TFV Rolling of flat material 75

Institut für Metallurgi 3. 4 Cobble in HSM C Hot Rolling Werkstoffumformung TFV Rolling of flat material 76

3. 4 Cobble on ROT or Coiler C Hot Rolling Institut für Metallurgi Werkstoffumformung TFV Rolling of flat material 77

Institut für Metallurgi 3. 4 Art in Processing C Hot Rolling Werkstoffumformung TFV Rolling of flat material 78