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Continuous Hot DIP Galvanizing Line Plant1
Assembly Line Production Line, Building Materials Production Line, Hot DIP Galvanizing Line, Hot DIP Galvanizing Machine
Suzhou CMT Engineering Company Limited
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Product Description We can design the production line according to your requirements. The following data is just for your reference.1 Process description1.1 productive technology resumeThis line is designed as Sendzimir processing.After cold rolling strip steel surface was clean through electrolysis cleaning and bake, enter into NOF for annealing and reduction, galvanized in the zinc pot in the sealed atmosphere, blowed by air knife and cooling, and obtain galvanizing steel coil. Under the process of the skin pass mill, tension leveler, passivity/antifinger treatment, oil coating, get finished galvanizing coil.The main process flow: loading coil-pay-off reel( 1# and 2# pay-off reel in turn) - shear (1# and 2# shear in turn) - welding - electrolytic cleaning and drying - annealing - galvanizing/galvalume - air knife blow -- air cooling - water quenching - skin pass mill(reserved) - tension leveler - passivity - electrostatic oiling (reserved)- shear-coiling - unloading coil - packing.1.2 Line technical parameter1) Raw materialUn-annealing low carbon cold rolled coilMaterial: CQStrength of extension max.650MPaYield strength max.450MpaSpecification thickness: 0.22-2.0mmWidth: 900-1250mmCoil weight 25t (max.)Coil ID Φ508mm,Φ610mmCoil OD Φ2100mm(max.), Φ900mm(min.)The cold rolled strip steel quality standard is in accordance with GB709-2004, detail specification:Single coil weight ≤25tFlatness <40 ICamber <3mm/mCoil inner is required orderly, edge is flat, no burr, crack and crackCleanness of the strip steel surface:Residual rolling oil (double side) max. 500 mg / m2Residual carbon powder(double side) max. 50 mg / m2Residual ferrous power(double side) max. 250 mg / m2Strip temperature max.100oC 2) Finished productGalvanized and galvalume alloy steel coilVariety of coating: Zinc layer(GI), zinc aluminum layer (include AL55%,GL, zinc pot reserved)Specification thickness 0.22-2.0mmWidth 900-1250mmCoil weight 25t (max.)Coil ID Φ508mmCoil OD Φ1800mm (max.)Product performance grade CQFilm surface state common spangleSurface protection type chromating (oiling reservation)Plating layer weight GI 40-270 g/m2 (double side)Product standard GB 2518-2004(GI) 3) Production outlinePRODUCT MIXGALVANIZED STEEL SHEETS/COILS REQUIREMENT4) Working system and effective working hoursCalendar time 365×24=8760 hour/yearMaintenance time total: 360+400=760 hour/yearMain maintenance 15×24=360 hour/yearMaintenance weekly 8×50=400 hour/yearOther downtime 800 hour/yearTime available 7200 hour/year(i.e. rated working time)Annual working time 7000 hoursLine load 97% 2 .Process flow 2.1 Unit process flow diagramFor more information, please contact us at any time. Strip steel composition C%Si%Mn%Al%P%S%CQ≤0.12 ≤0.50 ≤0.04≤0.04
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