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Shijiazhuang Faith Machinery Co.,Ltd is committed to offering comprehensive solutions for cold rolled strip slitting lines, delivering robust equipment tailored to the evolving needs of steel processors. Cold rolled strip slitting lines play a crucial role in downstream manufacturing—providing accurately slit coils for industries ranging from automotive panel production to precision appliance components. This article explores the key components, process workflow, customization options, and support services that define Faith Machinery’s approach to cold rolled strip slitting.
Coil Handling and Decoiling
Heavy‑duty coil cars position incoming coils onto hydraulic or mechanical decoilers.
Tension control arms and levelers ensure uniform strip flatness before slitting.
Slitting Section
Upper and lower rotary knives, mounted on precision slide beds, shear the strip into narrow widths.
Knife shafts are supported by heavy‑duty bearings and splined couplings for torque transmission and easy adjustment.
Quick‑change knife holders reduce tool changeover time, enabling rapid shifts between slit widths.
Recoiling and Tension Control
Recoilers use variable‑frequency drives (VFDs) to maintain consistent line tension and coil build quality.
Strip edge sensors monitor coil alignment, adjusting coil position via transverse guides.
Edge Trimming and Scrap Handling
Integrated edge trimmers collect trimmed scrap strips, feeding them to a central conveyor for recycling.
Servo‑driven scrap choppers cut waste into uniform lengths for simplified material handling.
Tension Leveling Units: Multi‑roll tension levelers up‑stream of the slitter remove residual curvature and improve slit edge quality.
Automatic Knife Gap Control: Load cells measure slitting torque, prompting PLC‑driven adjustments to knife distance for consistent slit quality.
Surface Safety Measures: Closed‑loop strip steering systems keep the edge of each slit within ±0.5 mm of the centerline, reducing surface scarring.
Data Logging: PLC systems record line speed, tension profiles, and knife torque data, enabling traceability and process optimization.
Material Range: Lines are configured for strip thicknesses from 0.15 mm to 3 mm and widths up to 1,650 mm, accommodating carbon steel, stainless steel, and non‑ferrous alloys.
Slit Width Flexibility: Typical slit width ranges from 10 mm to 1,000 mm; optional micro‑slitting modules allow down to 2 mm widths.
Throughput Options: Production speeds up to 200 m/min are achievable with dual‑cut slitting frames and high‑torque motors.
Layout Variants: Straight‑line, U‑type, and L‑type configurations adapt to varied factory footprints.
Centralized Control: A Siemens or Delta PLC integrates decoiler, slitting, and recoiler operations, with an HMI offering recipe management and fault diagnostics.
Remote Monitoring: Optional SCADA interfaces provide real‑time line status, alarm logs, and key performance indicators accessible via secure VPN.
ERP Connectivity: Standard OPC UA servers enable data exchange with enterprise resource planning systems for production planning and material tracking.
Commissioning and Training: Faith Machinery’s service team oversees on‑site installation, line commissioning, and operator training programs.
Spare Parts and Wear Items: A recommended spare parts list covers knives, bearings, coupling elements, and hydraulic seals.
Preventive Maintenance: Scheduled maintenance packages include inspection checklists for tension levelers, recoiler brakes, and knife shafts to minimize unplanned shutdowns.
Technical Hotline: A dedicated support line provides rapid troubleshooting assistance, with optional remote access for parameter review and software updates.
