COLD ROLLED STEEL - posco.co.kr jS-SPcD jS-SPce jS-SPcF, jS-SPcG 압연방향 jS 5I

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  • COLD ROLLED STEEL

  • COLD ROLLeD SteeL

    .

    2, 4 ,

    .

    &

    HSS

    04

    06

    08

    12

    14

    16

    17

    18

    19

    20

    22

    23

    26

    28

    29

    30

    Contents

    .

    2, 4 ,

    .

    &

    HSS

    04

    06

    08

    12

    14

    16

    17

    18

    19

    20

    22

    23

    26

    28

    29

    30

    Contents

  • , 1973 1

    4 1981 2 .

    ,

    2007 5

    .

    , , , , , , API

    16,185(2013 )

    .

    ,

    , API , .

    .

    , , , , API

    20,231(2013 )

    04

    POSCO Hot Rolled Steel

    POSCO Hot Rolled Steel

    05

    &

    Pohang

    GwangyangchInA

    jAPAn

    koreA

    Seoul

    The POSCOQuality customer Inside :

    Basic Inside :

    Synergy Inside : Supply chain

  • 06

    POSCO Cold Rolled Steel

    POSCO Cold Rolled Steel

    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

  • 08

    POSCO Cold Rolled Steel

    POSCO Cold Rolled Steel

    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

  • 10

    POSCO Cold Rolled Steel

    POSCO Cold Rolled Steel

    11

    & ()

    .

    40~90% ,

    ,

    .

    .

    ,

    .

    .

    1%

    .

    .

    PL/TCM(Pickling Line and Tandem Cold Mill)

    CAL(Continuous Annealing Line)

    BAF(Batch Annealing Furnace)

    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 reel

    SkinPassMill

    SideTrimmer

    oiler

    cold rolled coil

    Shear

    ()

    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

  • 12

    POSCO Cold Rolled Steel

    POSCO Cold Rolled Steel

    13

    , ,

    .

    .

    , , , ,

    , , , .

    HSS(~60kg)

    high Strength Steel

    ,

    .

    (LnG, LPG TAnk),

    Mn , .

    , (, )

    (Sox)

    .

    .

    cu, cr

    5 .

    ()

    ( ) .

    , ,

    , oil Filter

    .

    , .

  • 14

    POSCO Cold Rolled Steel

    POSCO Cold Rolled Steel

    15

    , , .

    cSP1CommercialQuality

    CSP1

    cSP1D

    CSP2

    1/2

    cSP2Drawing Quality

    cSP3(n)Deep Drawing

    Quality

    cSP3e,cSP3X,cSP3Z

    Extra Deep Drawing Quality

    CSP3

    1/4

    1/8

    , , . ,

    .

    C(%)

    ~0.15

    ~0.10

    ~0.08

    Mn(%)

    ~0.60

    ~0.50

    ~0.45

    SPcc-1

    SPcc-2

    SPcc-4

    SPcc-8

    P(%)

    ~0.100

    ~0.040

    ~0.030

    HRB

    74~89

    65~80

    50~71

    S(%)

    ~0.035

    ~0.035

    ~0.030

    HV

    135~185

    115~150

    95~130

    KS

    kS-SPcc

    kS-SPcD

    kS-SPce

    kS-SPcF,kS-SPcG

    kS 5 kS 5

    JIS

    jS-SPcc

    jS-SPcD

    jS-SPce

    jS-SPcF,jS-SPcG

    jIS 5

    ASTM

    A1008 cS

    A1008 DS

    A1008 DDS

    A1008 eDDS

    ASTM

    EN

    en-Dc01, en-Dc03

    en-Dc04

    en-Dc05

    en-Dc06,en-Dc07

    en

    . , Frame

    POSCOGrade

    ) kS, jIS .

    CSP1 ~392

    (N/mm2)

    CSP1D ~343

    (%)

    (N/mm2)

    (mm)

    0.25~0.3 0.3~0.4 0.4~0.6 0.6~1.0 1.0~1.6 1.6~2.5 2.5~3.3

    270~ 28~ 31~ 34~ 36~ 37~ 38~ 39~

    270~ 33~

    30~

    32~

    32~

    32~

    -

    -

    33~

    33~

    35~

    35~

    35~

    -

    -

    35~

    36~

    38~

    38~

    38~

    47~

    52~

    37~ 38~ 38~ 40~

    270~

    270~

    270~

    265~

    260~

    255~

    38~

    40~

    40~

    40~

    47~

    52~

    39~

    41~

    41~

    41~

    49~

    52~

    40~

    42~

    42~

    42~

    50~

    -

    41~

    43~

    43~

    43~

    -

    -

    CSP2

    CSP3

    CSP3N

    CSP3E

    CSP3X

    CSP3Z

    ~345

    ~294

    ~294

    ~294

    ~294

    ~250

    ) 1. , Appendix(31P) .

    2. PoSco , , .

    3. .

    ) 1. , -S, -e, -Z , ) cSP1D-e S: , e: , Z:

    2. cSP3n,e,X,Z 6 .

  • 16

    POSCO Cold Rolled Steel

    POSCO Cold Rolled Steel

    17

    HSS

    high Strength Steel .

    .

    .

    E

    R

    C

    Ti , P, Mn .

    P, Mn , . .

    Ti, nb . .

    .

    (c) , .

    .

    E

    R

    C

    C(%)

    ~0.005

    ~0.09

    ~0.09

    Mn(%)

    ~1.0

    ~1.4

    ~1.4

    P(%)

    ~0.11

    ~0.03

    ~0.025

    S(%)

    ~0.02

    ~0.015

    ~0.01

    Si(%)

    ~0.40

    ~0.14

    ~0.34

    C(%)

    ~0.2

    Mn(%)

    ~0.6

    P(%)

    ~0.04

    S(%)

    ~0.04

    E

    (N/mm2)

    340~

    390~

    440~

    340~

    390~

    440~

    440~

    588~

    340~450

    410~530

    490~600

    (%)

    34~

    30~

    26~

    35~

    29~

    26~

    22~

    17~

    28~

    20~

    16~

    (N/mm2)

    185~

    215~

    235~

    185~

    215~

    245~

    275~

    350~

    260~340

    340~440

    420~530

    R

    C

    chSP35e

    chSP40e

    chSP45e

    chSP35r

    chSP40r

    chSP45r

    chSP45c

    chSP60c

    chSP260c

    chSP340c

    chSP420Y

    ) 1. hSS kS 13A

    2. 0.6mm .

    3. .

    (N/mm2)

    294~

    314~

    334~

    cSP30

    cSP32

    cSP34

    Interstitial Free high Strength Steelhigh Strength Low Alloy Steel

    rephosphorized Steel

    Interstitial Free high Strength Steel

  • 18

    POSCO Cold Rolled Steel

    POSCO Cold Rolled Steel

    19

    FcW(Flux cored Wire) : Slitting ,

    roll Forming Flux ,

    Die Wire .

    CSP2-WB

    CSP2-WC

    CSP2-WE

    CSP3-LW

    C(%)

    ~0.04

    ~0.05

    ~0.04

    ~0.007

    Mn(%)

    0.1~0.5

    0.1~0.5

    0.1~0.5

    0.5~1.0

    P(%)

    ~0.02

    ~0.015

    ~0.01

    ~0.015

    S(%)

    ~0.02

    ~0.015

    ~0.01

    ~0.015

    Si(%)

    ~0.03

    ~0.03

    ~0.03

    ~0.03

    ) 1. kS5

    2. 0.6mm .

    3. .

    CSP2-WB

    CSP2-WE

    CSP2-WC

    CSP3-LW

    ~260

    ~260

    ~264

    ~240

    (%)

    0.4~0.6T 0.6~1.0T 1.0~1.6T 1.6~2.0T

    270~ 36~ 38~ 39~ 40~ ~55

    270~

    275~

    270~

    36~

    36~

    38~

    38~

    38~

    40~

    39~

    39~

    41~

    40~ ~55

    40~ ~60

    42~ ~45

    (N/mm2)

    (N/mm2)

    (HrB)

    FUME

    (LnG, LPG TAnk)

    Mn

    Fume

    Spatter

    Mn

    (-20) 27j

    (-60) 47j

    (-60) 47j

    (-20) 27j

    cSP2-WB

    cSP2-Wc

    cSP2-We

    cSP3-LW

    , , , , .

    , , , , , , .

    , , , , , , , .

    CESP-C

    POSCENA-C

    C(%)

    ~0.008

    ~0.008

    Mn(%)

    ~0.5

    ~0.5

    P(%)

    ~0.04

    ~0.04

    S(%)

    ~0.06

    ~0.04

    Ti

    Ti

    (Drawing)

    1 2

    CESP-C

    POSCENA-C

    * : Fishscale, Blister .

    CESP-C

    POSCENA-C~240

    (%)

    0.4~0.6T 0.6~1.0T 1.0~1.6T 1.6~2.0T

    38~ 40~ 41~ 42~ 1.2~270~

    34~ 36~ 37~ 38~ 1.4~

    (N/mm2)

    (N/mm2) R-bar

    (cover coat) :

    (cover coat) :

    : , , ,

    Flux

    [ FCW ] [ ]

    Strip

    ,

    , .

  • 20

    POSCO Cold Rolled Steel

    POSCO Cold Rolled Steel

    21

    , .