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Shijiazhuang Faith Machinery Co.,Ltd offers Cold‐Rolled (CR) Steel Coil Slitting Lines focused on high‐speed processing of thin, flat strip for applications in automotive panel fabrication, appliance manufacturing, and precision stamping. These lines emphasize surface preservation, tight width tolerances, and throughput up to 200 m/min.
1. Precision Decoiling
Hydraulic mandrel decoilers with fine torque control feed CR steel coils (0.1 mm to 2 mm thickness) into the line. Coil cars with alignment sensors ensure accurate strip entry, minimizing lateral strip wander that can lead to edge damage.
2. Tension Leveling for Flatness
A high‐accuracy tension leveler with 25 to 30 work rolls removes coil set and camber. Electronic load‐cell control maintains tension within ±2% of setpoint, enabling zero‐mark leveling that preserves surface coating and finish.
3. Micro‐Slitting Section
Micro‐slitting frames with HSS or carbide-tipped knives handle slit widths down to 2 mm. Knife gap adjustment via servo drives and real‐time torque feedback ensures burr‐free edges at line speeds up to 200 m/min. Sliding knife holders facilitate changeovers in less than 30 minutes.
4. Surface Protection and Cleaning
Guide rollers and slide pads use non‐marking polyurethane sleeves. After slitting, low‐pressure air knives clear any residual debris from strip edges, preparing coils for downstream pre-paint or plating processes.
5. Recoiling and Coil Build
Recoilers with disc-type braking maintain consistent wrap tension. Laser edge guides adjust traverse motion to ensure even coil build across narrow and wide slit strips. Programmable tension profiles adapt to variations in strip width without operator intervention.
6. Control and Data Management
A Mitsubishi PLC coordinates decoiler, leveler, slitter, and recoiler drives, with an HMI that provides recipe recall, alarm logs, and performance trending. OPC UA connectivity streams production data to factory MES for real-time inventory tracking and yield analysis.
