China HR Coil Slitting Line Factory - Top Suppliers for Precision Slitting Metal Coils
Product Introduction
The slitting machine is a key piece of equipment in industry for cutting wide metal or non-metallic coil materials into several narrow strips of the required width along the length direction. Its core working principle is to continuously roll-cut the material through the rotation of the upper and lower circular disc knife shafts.
Mainly consists of upper and lower knife shafts, fixed/movable frames, and a synchronous lifting mechanism. Knife shafts and frames undergo precision turning, high-frequency treatment, grinding, and chrome plating to guarantee rigidity and long-term slitting accuracy.
Applicable to coils of various specifications. It cuts coils into designated widths for punch lines through uncoiling, pre-leveling, cropping, slitting, and recoiling, featuring proper layout, smooth operation, high automation, and peak efficiency.
Engineered to process cold-rolled and hot-rolled coils, silicon steel coils, stainless coils, colored coils, aluminum coils, and various plated and coated materials with precision edge control.
Includes loading cart, uncoiler, slitter, scrap winder, cropping shear, tension controller, recoiler, loop bridge, pinch, and deviation corrector—fully integrating mechanical, electrical, hydraulic, and pneumatic systems.
Typical Application Industries
Widely used in various fields such as automobile manufacturing, home appliance production, construction materials (such as cabinets, kitchenware, doors and windows), hardware products, containers, electronic appliances, light industry, and packaging.
Main Technical Parameters
| Model | Thickness | Width | Coil Weight | Finish Width | Slitting Strips | Slitting Speed | Area Needed | Main Shaft Dia. |
|---|---|---|---|---|---|---|---|---|
| 3×1600 | 0.5-3mm | 900-1600mm | 30T | ≥40mm | ≤13 | 50m/min | 21×11m | Φ240 |
| 4×1600 | 0.5-4mm | 900-1600mm | 30T | ≥60mm | ≤13 | 50m/min | 21×11m | Φ240 |
| 6×1600 | 1-6mm | 900-1600mm | 30T | ≥60mm | ≤10 | 50m/min | 21×11m | Φ260 |
| 8×2000 | 2-8mm | 900-2000mm | 35T | ≥70mm | ≤6 | 30m/min | 30×11m | Φ300 |
| 10×2200 | 3-10mm | 900-2200mm | 35T | ≥80mm | ≤5 | 30m/min | 35×11m | Φ320 |
| 12×2200 | 3-12mm | 900-2200mm | 35T | ≥100mm | ≤5 | 30m/min | 38×11m | Φ320 |
| 16×2500 | 4-16mm | 900-2500mm | 35T | ≥100mm | ≤5 | 20m/min | 38×11m | Φ400 |
| 20×2500 | 6-20mm | 900-2500mm | 35T | ≥100mm | ≤4 | 20m/min | 38×11m | Φ480 |
Frequently Asked Questions
This slitting line is designed to process cold-rolled and hot-rolled coils, silicon steel coils, stainless steel coils, color-coated coils, aluminum coils, as well as various galvanized and plated coil materials.
Depending on the specific model, the thickness capability ranges from 0.5 mm for light-gauge models (such as 3×1600) up to 20 mm for heavy-duty models (such as 20×2500).
The knife shafts and machine frames undergo precision manufacturing processes, including fine turning, high-frequency induction hardening, high-precision grinding, and hard chrome plating, ensuring maximum structural rigidity and minimal shaft deflection under heavy loads.
A standard complete line includes an entry loading cart, decoiler/uncoiler, pre-leveler, cropping shear, rotary slitter, scrap winder, loop bridge, pinch roll & deviation corrector, tension station, and recoiler, integrated with hydraulic, electrical, and pneumatic controls.
For light to medium gauge lines (up to 6mm thickness), slitting speeds reach up to 50 m/min. For heavy-duty models handling plate up to 20mm thickness, the speed ranges from 20 to 30 m/min to guarantee stability and cutting precision.
The slitted strips are widely applied in automotive body manufacturing, home appliance enclosures, door and window hardware, kitchenware, metal container fabrication, light industrial packaging, and precision stamping lines.