CR Steel Coil Slitting Line

Powering high-precision processing of cold-rolled (CR) steel strip, Shijiazhuang Faith Machinery Co.,Ltd’s CR Steel Coil Slitting Line delivers consistent slit widths and exceptional surface quality for applications in automotive panel stamping, appliance manufacturing, and pre-painted steel production.

Line Design and Workflow

1. Precision Decoiling

• Hydraulic mandrel decoilers with fine‐tuned brake systems feed CR steel coils with minimal drag marks or surface damage.

• Coil cars with automatic alignment ensure correct strip entry angles.

2. Tension Leveling

• High‐accuracy levelers with closely spaced rolls remove coil set and produce a uniform strip profile.

• Electronic load‐cell control maintains tension within ±2% of setpoint, critical for narrow slit widths.

3. High-Precision Slitting

• Micro‐slitting frames support slit widths down to 2 mm, utilizing ultra‐sharp knives and minimal clearance settings.

• Knife gap control via servo adjustment ensures consistent slit quality across the full coil width.

4. Recoiling and Coil Build Monitoring

• Recoilers equipped with variable frequency drives and automatic edge tracking wind strips into neat, telescoping-free coils.

• Laser micrometers monitor coil build diameter in real time, adjusting traverse speed to maintain even layering.

Surface Protection and Quality Controls

• Non-Marking Rollers: Entry and exit guide rollers feature polyurethane sleeves to safeguard finished CR surfaces from marring.

• Inline Surface Inspection: High-resolution cameras detect scratches or coating defects immediately after slitting, diverting affected strips to a secondary line.

• Clean Room Options: Enclosures with filtered air supply minimize airborne particulates for specialty CR applications such as electronics or precision appliances.

Material and Throughput Specifications

• Material Thickness: Processes CR steel from 0.1 mm to 2 mm thickness with tight flatness and surface finish requirements.

• Slit Width Range: Standard slit widths from 5 mm to 1,000 mm; optional micro‐slitting modules enable down to 2 mm.

• Line Speeds: Up to 200 m/min for thin gauges; adjustable speed profiles accommodate fragile coatings or patterned surfaces.

Automation and Data Integration

• Central Control Suite: A dedicated PLC coordinates decoiler, leveler, micro-slitting, and recoiler modules, communicating through an EtherCAT network.

• HMI and Recipe Management: Touchscreen interface stores material-specific recipes, detailing tension setpoints, knife gaps, and speed profiles.

• MES Connectivity: OPC UA servers link production data—coil IDs, slit patterns, output lengths—to factory management systems for real-time inventory tracking.

Support and Maintenance

Shijiazhuang Faith Machinery Co.,Ltd offers turnkey installation, start-up assistance, and comprehensive operator training on the CR Steel Coil Slitting Line. Preventive maintenance schedules include regular calibration of laser sensors, lubrication of leveler rolls, and inspection of micro-slitting knives. Through proactive service agreements and a stocked inventory of critical spares, the CR Steel Coil Slitting Line continues to deliver high-value slit coils with minimal downtime, supporting demanding manufacturing environments.