AUTOMOTIVE sTEEl - posco.co.kr .POSCO Automotive Steel POSCO Automotive Steel 04 05 포항제철소는

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  • AUTOMOTIVEsTEEl

  • 2

    POSCO Automotive Steel

    AUTOMOTIVE STEEl

    , , Top .

    ,

    Top .

    04

    06

    16

    20

    70

    72

    82

    84

    90

    94

    Contents

    ,

    , , Top .

    ,

    Top .

    04

    06

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    72

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    Contents

    ,

  • POSCO Automotive Steel

    POSCO Automotive Steel

    04 05

    , 1973 1

    4 1981 2 .

    ,

    2007 5

    .

    , , , , , , API

    16,185(2013 )

    .

    ,

    , API , .

    .

    , , , , API

    20,231(2013 )

    Pohang

    GwangyangchInA

    jAPAn

    koreA

    Seoul

    The POSCOQuality customer Inside :

    Basic Inside :

    Synergy Inside : Supply chain

  • POSCO Automotive Steel

    POSCO Automotive Steel

    06 07

    ()

    RH

    PI

    LF

    .

    - .- : 1 100 3, 2 300 3- : 1 250 3, 2 250 3

    - reinstahl hutenwerke & heraus - Ar n2 , .- oxygen Blowing

    - Powder Injection- Lance ca-Si , .

    - Ladle Furnace- Arc .

    - (rh, PI, LF) (MoLD) , , Slab, Bloom, Billet .

    /

    Coke

    (10~25mm), (25mm) (10mm) Size .

    , coke 1,200c , 10~50mm .- : 5, 4

    1,000c (Ash) coke(25~75mm : , ) .- : 5, 4

    , coke 1,100c coke .- : 6(coreX 1 ), 5

    /

    Size(mm)

    rh

    PI

    LFcoke

    (200~250)

    (740~2,200)

    250330

    120120160160

  • POSCO Automotive Steel

    POSCO Automotive Steel

    08 09

    & ()

    (Reheating Furnace)

    Slab

    . Slab Scale

    Scale Breaker , .

    (Roughing Mill)

    Scale Slab ,

    . edger AWc(Automatic Width

    control) .

    (Finishing Mill)

    , . Work

    roLL ShIFT , PAIr croSS MILL, orG(on-Line roll Grinding)

    (crown) .

    Run-Out Table (Coiling)

    rUn-oUT TABLe .

    TABLe roLL SPrAY

    .

    (Skin Pass Mill)

    ,

    ,

    .

    .

    SLAB

    run-out Table

    Shear

    Skin Pass Mill

    Welder

    Uncoiler

    Skin Pass Mill

    LF PI rh

  • POSCO Automotive Steel

    POSCO Automotive Steel

    10 11

    & ()

    40~90% ,

    ,

    .

    .

    ,

    .

    .

    1%

    .

    .

    PL/TCM(Pickling Line and Tandem Cold Mill)

    CAL(Continuous Annealing Line)

    BAF(Batch Annealing Furnace)

    ()

    FUr Tc

    Tc

    GAS

    cooling Yard

    1

    2

    Furnace

    cooling cover Inner cover

    Tilterno.2

    Tilterk1c

    convectorMagnet

    h2 Base(#1~6) k1 Base(#7~20) coil Storage

    h2() out let

    : : VenT gas : h2 in let

    coG

    coIL Tc

    Pay off reel

    Welder

    TensionLeveler

    entry Looper

    Tension reel

    Full hard coil

    Pickle Tank

    Side Trimmer

    Tandem cold Mill

    Pay off reel

    Full hard coil

    Welder

    electriccleaningTank Furnace

    Tension reelSkinPassMill

    SideTrimmer

    oiler

    cold rolled coil

    Shear

  • POSCO Automotive Steel

    POSCO Automotive Steel

    12 13

    ,

    ,

    .

    .

    Pot Zn , Air knife

    .

    Air knife

    Fe Zn

    Zn-Fe .

    Flat Skin

    Pass Mill

    ,

    cr-free .

    &

    Side Trimmer, , oiler,

    .

    PL/TCM

    CAL

    (HGI) (GI, GA)

    &

    Water cooling

    cooling chamber

    Furnace Section

    Furnace

    GAFurnace

    Zinc Pot

    SPM

    PL Tank

    Welder

    Pickle Tank

    Delivery Looper

    Delivery Looper

    Post Treatment

    entry Looper

    entry Looper

    Precleaning

    electrolyticcleaning

    Tendem Mill

    SideTrimmer

    Scale Breaker

    Payoff reel

    Payoff reel

    Tensionreel

    hGI

    Tension reel

    oiler

    oiler

    SPM

  • POSCO Automotive Steel

    POSCO Automotive Steel

    14 15

    Pay off reel, , ,

    Looper, Tension Leveller

    .

    Strip

    ,

    , ,

    rinse .

    Type

    .

    , ,

    .

    ,

    ,

    .

    Looper Tension reel

    ,

    .

    CAL

    EGL

    (EGI)

    &

    PL/TCM

    Welder

    Welder

    Welder

    Pickle Tank

    Delivery Looper

    entry Looper

    Tendem Mill

    SideTrimmer Side

    TrimmerPayoff reel

    Payoff reel

    Furnace

    organic coatingcoater Dryer

    oiler

    electrolyticcleaningTank

    SkinPassMill

    PostTreatment

    LooperTension

    reel

    coatingWeight Gauge

    Watercooling

    Inspectionoiler

    Pre-Treatment

    Plating cell

    Looper

    TensionLeveller

  • 16

    POSCO Automotive Steel

    POSCO Automotive Steel

    17

    Hood OTR (35HSS)Hood INR (DDQ) Chipping, , , ,

    Trunk Lid OTR (35HSS)Trunk Lid INR (DDQ~EDDQ) ,

    Side OTR (EDDQ) ,

    Rear floor (DDQ~EDDQ) , ,

    Floor Cross MBR(35~45HSS) ,

    Bumper reinforcement(80~120 AHSS) , Press , Roll Forming,

    Front Side MBR(40~45 HSS) ,

    Frame (40~45 HSS) , ,

    Door OTR (35HSS)Door INR (DDQ) , , ,

    Door impact beam (80~100 HSS) , , ERW

    Shock absorber housing (S-EDDQ)

    /

    Roof (CQ-DQ)

    , , ,

    ,

    -

    , , , , Dent,

    , , ,

    ,

    , , , Dent

    Door Inner, Floor

    Bumper

    Door oTr

    oil Pan,

    Part , .

  • 18

    POSCO Automotive Steel

    POSCO Automotive Steel

    19

    1.

    (Mild Steel) 340MPa .

    . ,

    rear floor Side body outer .

    1.1 IF

    IF Ti, nb

    (Interstitial atom) c, n

    . Scavenging effect

    .

    1.2 (C,N,S)

    .

    (rankford, F) ,

    .

    2.

    2.1

    BAF (Batch Annealing Furnace), CAL (Continuous Annealing Line)

    Elongation (%)

    :Cold-rolled :Hot-rolled 1) CR (uncoated cold-rolled), EG (electrogalvanized), GI (hot-dip galvanized), GA (hot-dip galvannealed), PO (pickling and oiling)

    Grade Guaranteedvalue Class.1) C

    Max.Mn

    Max.Si

    Max.P

    Max.S

    Max.

    CQ TScr/eG 0.1 0.50 0.04 0.035 0.025

    GI/GA 0.1 0.50 0.04 0.035 0.025

    LQ TScr/eG 0.08 0.45 0.04 0.035 0.025

    GI/GA 0.08 0.45 0.04 0.035 0.025

    DQ TScr/eG 0.08 0.45 0.04 0.030 0.025

    GI/GA 0.08 0.45 0.04 0.030 0.025

    DDQ TScr/eG 0.08 0.40 0.04 0.025 0.020

    GI/GA 0.08 0.40 0.04 0.025 0.020

    EDDQ TScr/eG 0.008 0.30 0.04 0.020 0.020

    GI/GA 0.008 0.30 0.04 0.020 0.020

    S-EDDQ TScr/eG 0.006 0.30 0.12 0.020 0.020

    GI/GA 0.006 0.30 0.12 0.020 0.020

    H-EDDQ TScr/eG 0.006 0.25 0.12 0.020 0.020

    GI/GA 0.006 0.25 0.12 0.020 0.020

    C TS Po 0.15 0.60 0.06 0.010 0.025

    D TS Po 0.10 0.45 0.06 0.03 0.025

    E TS Po 0.08 0.40 0.04 0.25 0.020

    2.2 1)

    2.3

    :Cold-rolled :Hot-rolled 1) Guaranteed value for tensile test, uncoated sheet, rolling direction, JIS5 specimens (CR: 0.8t

  • 20

    POSCO Automotive Steel

    POSCO Automotive Steel

    21

    3. ( : mm)Grade : CR/GA, DDQ

    ( : mm)Grade : PO, C/D/E

    The above diagrams are only for selected steel grades. Please contact for more information of other grades.

    Grade . Grade .

    Hood inner Door inner Rear floor

    CR GA

    4.

    Cold rolled and galvanized steel sheets for inner and outer panels

    Hot rolled steel sheets for members and chassis0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6

    600

    700

    800

    900

    1,000

    1,100

    1,200

    1,300

    1,400

    1,500

    1,600

    1,700

    1,800

    1,900

    1.0 1.2 1.4 1.6 1.8 2.0 2.3 2.7 3.2 4.0 5.0 6.0 7.0

    600

    700

    800

    900

    1,000

    1,100

    1,200

    1,300

    1,400

    1,500

    1,600

    1,700

    1,800

    1,900

    (Mild Steel)

  • 22

    POSCO Automotive Steel

    POSCO Automotive Steel

    23

    (Bake Hardening Steel)

    1.

    (Bake hardening Steel) , ,

    . , (Bake hardening

    effect) 30MPa . (Dent resistance) ,

    . hood, Door outer

    .

    1.1 BH

    30MPa , cottrell

    .

    1.2 BH

    2.

    2.1

    :Cold-rolled :Hot-rolled 1) CR (uncoated cold-rolled), EG (electrogalvanized), GI (hot-dip galvanized), GA (hot-dip galvannealed), PO (pickling and oiling)

    Grade Guaranteedvalue Class.1) C

    Max.Mn

    Max.Si

    Max.P

    Max.S

    Max.

    340BH TScr/eG 0.0020 0.65 0.03 0.06 0.015

    GI/GA 0.0020 0.65 0.03 0.06 0.015

    180YB YScr/eG 0.0024 0.20 0.05 0.03 0.013

    GI/GA 0.0024 0.20 0.05 0.03 0.013

    210YB YScr/eG 0.0030 0.20 0.09 0.07 0.015

    GI/GA 0.0030 0.20 0.09 0.07 0.015

    240YB YScr/eG 0.0030 0.20 0.09 0.07 0.015

    GI/GA 0.0030 0.20 0.09 0.07 0.015

    270YB YS GI/GA 0.0030 0.20 0.09 0.07 0.015

    (r-value) 1.4

    (6 ) YP-eI 0.2%

    30MPa

    2.2 1)

    :Cold-rolled :Hot-rolled 1) Guaranteed value for tensile test, uncoated sheet, rolling direction, JIS5 specimens (CR: 0.8t

  • 24

    POSCO Automotive Steel

    PO

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