5.4.9 POSCO E&C Annealing Coated Line (ACL)

POSCO ACL 1.PROCESS FLOW Material Coil-Coil Skid- Coil Car- Pay-off Reel- Welder- Entry Looper- Degreasing Section- Annealing Furnace- Coater- Drying Furnace- Exit Looper-Side Trimmer- Shear- Exit Deflector Pinch Roll-Tension Reel 2. Basic Consideration and Design Basis 2.1 General Characteristics of Line2.1.1 Basic Data and Design Basis1) Strip dimension of raw materials and products ·Strip thickness : Min. 0.20 mmMax. 0.65 mm ·Strip width : Min. 600 mm Max. 1,270 mm2) Coil dimension of raw materials ·Inner diameter (I.D) :510 / 610 mm ·Out diameter (O.D) : Max. 2,050 mm ·Weight : Max. 25 ton3) Line speed ·Entry section : Max. 120 m/min ·Process section : Max. 90 m/min (Line drive capacity : 100mpm) ·Exit section: Max. 120 m/min2.1.2 Coating condition ItemConditionC-6Coating MaterialMagnesium chromate andAcrylic resinCoating MethodBoth side of stripCoating Thickness0.03 0.15 Mils/Side(0.76 3.81 μ/Side)Aim : 0.05 0.10 Mils/Side(Aim : 1.27 2.54 μ/Side)2.1.3 The specification of raw material and product DescriptionRaw materialProduct- Steel grade F/H NO CoilNO coil- Thickness 0.35, 0.50, 0.650.35, 0.50, 0.65- Width 600 1,270600 1,270- Weight Max. 25tonMax. 20ton- Inner diameter(mm) Φ510/610Φ510/610- Outer diameter(mm) Max. Φ2050Max. Φ20502.1.4 Basic Data of Raw Materials 1) Mechanical PropertiesGradeT.S(Kg/mm2)Y.P(Kg/mm2)EL(%)CRCRCRNO79 9076 901 1.5C : Cross Direction R : Rolling DirectionContact me for further information.