Project Name: 900mm Strip Continuous Pickling Production Line 1#
Customer name: Zhejiang Yuanli Group
Project nature: new construction
Undertaking method: Jingjie Ruisi general contracting
Signing time: August 5, 2009
Production status: On time production
Operation: Good condition
1. Basic parameters:
Raw materials: cold-rolled carbon structural steel, high-quality carbon structural steel and low-alloy steel coils
Steel grades: Q195, Q235, ST12, ST13, SPCC, SPCD and 20#
Yield strength: 210~360N/mm2
Tensile strength: 270~610N/mm2
Strip thickness: 1.5~1.8~3.0mm
Strip width: 580~630mm
Raw material inner diameter: Φ508mm
Product Inner Diameter: Φ508mm
Outer diameter of steel coil: max Φ1600mm
min Φ1100mm
Unit weight of steel coil: max 5.6 t
Annual work plan: 300 days * 24 hours
Energy: water, electricity, steam
Product Form: Roll to Roll
Production program: 300,000 tons/year
Unit ****** process speed : 100m/min
2. Technical indicators of the main body of the production line
Process method: continuous shallow groove turbulent hydrochloric acid pickling
Production line layout: from left to right from the operation side
Production line ****** process speed: 100m/min
Process speed during rewinding: 10-60m/min
Jog speed: 10-30m/min
Unit transmission mode: AC transmission, frequency conversion speed regulation
Acid concentration: Max 200 g/L HCl, 125 g/L Fe2, 5 g/L Fe3
Minimum pickling time: 26s
Total length of acid tank: 50 m
Total length of the unit: 116 m
Uncoiling tension: 10 kN
Winding tension: 25 kN
The main equipment is composed of the following according to the process:
The main equipment is composed of the following according to the process flow: trolley feeding→ uncoiling unit→ uncoiling guide→ five-roller straightening pinch feeder→ shearing machine→ welding platform→ shelling machine→ 1# tensioning machine→ storage loop→ centering machine, CPC→2# tensioning machine→ pickling 1→ pickling 2→ pickling 3→ pickling 4→ washing 1→ rinsing→ rinsing 3→ rinsing 4→ hot air drying→ 3# tensioning machine→ storage loop→ centering machine, CPC→4# tensioning machine→ shearing machine→ outlet steering pampering machine→ winding unit (with EPC), → unloading trolley.