Acid Pickling Line/ Machine/Stainless Steel Annealing and Pickling Line

       1500mm 400 thousand  Pickling line

                  Technical Specification


1.Product and capacity

1)Product specification
         
Material: Low carbon steel and middle carbon steel
Steel No.: SPCC, SPCD, SPCE, SS400, Q195, Q215 and Q235, etc.
  
Delegated steel No.: Q215
Coil inside diameter: D=Φ610mm
Coil outside diameter: D=Φ1100~Φ2050mm
Strip width: 1000~1500 mm
Strip thickness: 1.2~3.0mm
Max. coil weight: 25MT
Mechanical property: σs≤360N/mm²
Quality requirement: According with the current standard stipulation of China.
1.2.Production capacity:   350.000 ton
1.2.1. Line parameter
Total length of the line: L≈100m 
Max. linear speed  (equipment/ processing) : 110m /100m/min
Threading speed: V=15m/min
  Specification of the pickling line
2.1. General introduction
This pickling line is pull-push type and adopts the advanced shallow tank turbulent flow pickling technology. The line provided is mature and reliable and proved by producing practice.
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The equipments of the line excepting the payoff reel and tension reel will adopt the aerial arrangement. The running level of the steel strip is +2500. The uncoiling, pickling and coiling will be finished online completely.It has the convenient operation, less fault,high efficiency working and other features. It can satisfy users with stable production and long-term running.
2.1.1Pickling process
Coil receiving table→coil loading car→pressing roll device and coil opening device→1# side guiding centering  device→9-roll straightening leveler→hydraulic shear→angle cut shear→ pickling tank (squeezing roll)→cleaning tank (squeezing roll)→hot air dryer →2# side guiding centering device→1# pinch roll→movable swing able→3# side guiding  centering  device→2# pinch roll→disc shear→→3-roll type bridle roll→turning roll for oil coating→tension reel→coil unloading car

2.1.2.Main performance parameter of the line
2.1.2.1.
Line speed:  110m/min (max.)
Process speed:   100m/min (max)
Threading speed:  15m/min
2.1.2.2. Pickling tank
Section quantity: n=4 class pickling 
Tank length of each section:  12.50m
2.1.2.3. Total length of the line:  about 100m
2.1.2.4. Power required:  about 1000 KW
2.1.3. Main control function of the line
2.1.3.1. Equipment sequence control
2.1.3.2. Line speed control
2.1.3.3.Line tension control
2.1.3.4. Pickling tank temperature control
2.1.3.5. Waste acid concentration checking and discharging control
2.1.3.6. Rinsing water conductivity checking control
2.1.3.7.Running parameter setting of the line
2.1.3.8. Accident alarming
2.2. Technology specification of equipment
2.2.1.Mechanical equipment
2.2.1.1. Coil loading (unloading) car and saddle
The coil loading (unloading) car is used for transporting the steel coil onto the coil drum of the payoff reel or transporting the steel coil onto the special equipment for temporary storing from the coil drum of the payoff reel.

The coil loading  (unloading)  car  is  composed of the fixed saddle and the horizontal transverse moving car with the vertical lifting and falling saddle.
Equipment performance:
Max. loading weight: 25MT
Outer diameter of steel coil: Φ1000-Φ2000mm
Lifting and falling height of saddle: 1000mm
Quantity of fixed saddle: 2 pairs or 3
2.2.1.2. Payoff reel
The payoff reel is used for uncoiling the steel coil into the strip and providing the suitable tension to the steel strip.
 The payoff reel is the hydraulic flexible cantilever type floating payoff reel with the auxiliary support and it is mainly  composed  of the payoff reel,transverse moving mechanism and auxiliary support, etc.
Equipment performance
Effective length of coil drum: L=1750mm
Diameter of coil drum: D=Φ610mm
Flexible stroke: ΔD=40mm
Payoff tension (max): 20KN
2.2.1.3.Pressing roll device and opening device
The opening device is used for fetching out the head of the steel coil and transporting the strip head to the next procedure.
 
The opening device is composed of the movable frame with the pressing roll driven by the oil motor and the flexible and wobbly uncoiling shovel plate.
2.2.1.4. Side guiding centering device
The side guiding centering device is used for guiding and position controlling the running steel strip.
The side guiding centering device is composed of the vertical roll stand and adjusting device of the vertical roll gap.
Equipment performance
Vertical roll: Φ150×150mm
Gap: 750 mm
2.2.1.5. 9-roll straightening leveler
    The straightening leveler is mainly used for straightening the head of the steel strip for easily sequent treating the head of the steel strip and threading.The pinch roll of the straightening leveler deliver the head of the strip into to the straightening leveler and at the same time the pinch roll also can establish the tension for the steel strip in the payoff section.



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