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Metal coil slitting machines subdivide wide coils into multiple narrower strips, supplying slit coils for automotive components, electrical enclosures, and appliance panels. Shijiazhuang Faith Machinery Co.,Ltd designs metal coil slitters that balance precision, throughput, and surface protection for a variety of substrates.
Line Configuration
A typical slitting machine line includes a coil car and mandrel decoiler feeding the strip into a tension‑leveling section. The slitting module employs upper and lower rotary knives on linear guideways, shearing the strip into specified widths. Following slitting, recoilers wind each narrow strip onto individual mandrels. Integrated edge trim removal conveyors and scrap choppers manage off‑cuts for recycling.
Substrate Versatility
Cold‑Rolled Steel: Requires non‑marking guide rollers and controlled tension to protect smooth surfaces.
Stainless Steel: Benefits from high‑strength shear knives with wear‑resistant coatings and ceramic‑sleeved guide rolls to prevent galling.
Aluminum and Copper: Use specialized knife gaps and surface‑friendly roller materials to avoid nicks or scoring.
Precision and Control Features
Strain gauges on knife shafts measure slitting torque, feeding data to the PLC, which automatically adjusts knife separation for consistent edge quality. Laser edge sensors guide recoil traverse, preventing telescoping. Operators select cut patterns via an HMI recipe library, which sets tension profiles, slitting speeds (up to 200 m/min), and knife gap parameters.
Customization Options
Knife holders with quick‑release clamps permit rapid changeovers between narrow and wide slit patterns. Optional micro‑slitting modules process widths down to 2 mm for foil applications. Coil car and recoiler capacities scale from 5‑ton service center lines to 25‑ton heavy gauge operations.
Service and Maintenance
Faith Machinery supports machine installation, operator training in knife change procedures, and preventive maintenance plans covering bearing lubrication, knife re‑grinding schedules, and hydraulic system inspection. Spare parts kits include knives, bearings, and pneumatic seals for minimal lead times.
