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used pickling line
2016 1250mm pickling line
stock No.: 448, it is written on January 23, 2023- product description
- Technical Parameters
1.1. Production scale: pickling medium and wide band steel 1.5-3.5 × 960-1350 mm
300000 tons/year
1.2. Product scheme:
Steel coil size after pickling: coil ID: ф 610 mm; coil Width: 960-1250 mm
Maximum coil OD: ф 2000 mm; Maximum coil weight: 24 tons
Product executive standard: GB716-91 cold rolled carbon structural steel strip
YB/T5059-93 low carbon steel cold rolled strip
GB13237-91 High-quality cold-rolled sheet and strip of carbon structure
GB/T2520-2000 Cold Rolled Electroplated Tin Sheet
1.3. Raw materials:
Hot rolled strip coil
Coil ID: Ф 610/ Ф 762 mm
Maximum coil OD: ф 2200 mm
Coil thickness: 1.5-3.5mm
Steel coil width: 960-1250 mm
Maximum coil weight: 24 tons
Unit coil weight: (max) 18kg/mm (average) 16kg/mm
Mechanical properties: maximum yield strength σ≤ 496N/mm2
Steel type: hot-rolled low-carbon steel, carbon structural steel, high-quality carbon structural steel, low-grade non-oriented cold-rolled silicon steel
Representative steel grades: SPCC/st12, SPCD/st13; Q195-Q235； Q295～Q345； 08AL； 10#； 20#； 50W600, 65W600, etc
The quality of steel coil shall comply with the provisions of current national standards.
Chapter II Production Capacity
Calculate original parameters:
*4-section acid tank (11.75 × 4=47m);
*Maximum linear speed of the unit 100m/min
*Minimum chemical reaction time: 25.8 seconds
*The threading speed of the unit is 30 meters/minute
*Average specification: 2.25 × 1000 Average coil weight 16 tons (outer diameter 1800mm)
*Annual production capacity: 300000 tons/year
Annual production working hours
1. Calendar time: 365 × 24 hours/day=8760 hours/year
2. Non-production time of the unit
Annual maintenance downtime
10 days × 24 hours/day × 1=240 hours/year
Scheduled maintenance shutdown
23 times/year × 8 hours/time=184 hours/year
3. Production utilization time
A-B=8336 hours/year
4. Production efficiency η= 0.8
Including: equipment failure shutdown, production accident handling such as arch belt, roll change, production plan change, etc.
Estimated net production time is 8336 × 0.8=6668.8 ≈ 6670 hours.
Technical parameter | Input | output |
Coil thickness（mm） | 1.5～3.5 | 1.5～3.5 |
Coil width（mm） | 960～1250 | 960～1250 |
It is allowed to pass without trimming | ||
Coil ID（mm） | Φ610/Φ762 | Φ610 |
Max. coil OD（mm） | Φ2200 | Φ2000 |
Max. coil weight（t） | 24 | 24 |
Maximum yield strength of raw material（N/mm2） | 496 | |
Line speed（m/min） | 90 | |
Capacity / year（ton） | 300,000 | |
acid tank total length(m) | 11.75×4＝47 | |
flushing tank total length(m) | 2×3＝6 | |
Unit type | Pull-push type pickling line | |
Pickling medium | 31% Industrial hydrochloric acid Pickling solution concentration 200±20g/L | |
Pickling temperature | 60～85℃ | |
Minimum pickling time (seconds) | ~28.2 | |
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