Raw material: Pickling hot rolled strip,cold rolled carbon structure steel, high quality carbon structure steel and low alloy steel coil should match standard: GB708-88: Dimension, figuration, weight and allowed deviation of cold rolled sheets/strips and GB13237-91: Quality carbon structural steel cold rolled thick sheets/strips
Electrical control equipments of the whole line includes basic automation control system, AC drive system, auxiliary drive system, hydraulic screw down control system and HM interface, etc. and adopts the Profibus communicating network for insuring the advancement and reliability of the electrical control system. The communicating with the upper-class computer adopts the Ethernet.
Line Main Properties : 1. Line Type : horizontal, vertical, combination of vertical and horizontal 2. Specification / Thickness : cold rolled strip / min. 0.12mm, max. 2.5mm
hot rolled strip / min. 1.5mm, max. 5mm Width : min. 550mm, max. 1500mm 3. Speed in Process Section: max. 200m/min (240m/min for GL) 4. Continuous Annealing Furnace: Furnace Type: horizontal, vertical, combination of vertical and horizontal (L type)Heating Method: Gas non-oxidation heating (NOF), Gas radiant tube heating (RTF), Electric radiant tube and electric resistance tape heatingCooling Method: Shielding gas regular air jet cooling, rich hydrogen high speed air jet cooling 5. Zinc pot: jet flow ceramic induction zinc pot (GL line with pre-melting pot) 6. Air knife: single injection advanced air knife, multi-cavity air knife 7. Skin Pass Mill: 300T-800T, 4-roll wet skin pass 8. Energy saving method: high efficiency radiant tube combustion air heat exchanger, fume duct combustion air heat exchanger, fume duct hot air and hot water heat exchanger, hot shielding gas recycle injection pre- heating strip, fume heat radiant before non-oxidation heating pre-heating strip, light fiber furnace lining
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