Simple Slitting Line | High-Speed Steel Coil Slitting Machine for Color Steel & GI Coils
Simple Slitting Line | High-Speed Steel Coil Slitting Machine for Color Steel & GI Coils
The simple slitting line is an economical and practical solution for cutting steel coils into narrow strips with high precision and efficiency. Designed to meet the needs of customers with limited workshop space, rental conditions, or strict productivity
Detailed Content
Product Overview
The simple slitting line is an economical and practical solution for cutting steel coils into narrow strips with high precision and efficiency. Designed to meet the needs of customers with limited workshop space, rental conditions, or strict productivity requirements, this line combines compact structure, reliable operation, and high production speed (up to 30 m/min).
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Unlike conventional slitting lines that require foundation pits, this equipment is specially engineered to operate without floor excavation, making it ideal for installation in leased workshops. The elevated recoiler, reinforced unloading car, and embedded guide posts ensure stable and safe coil handling, while the fully automated synchronization of uncoiling, slitting, and recoiling minimizes stretching, deformation, and misalignment.
Advantages of the Simple Slitting Line
- Compact design, total line length under 25 meters
- No pit foundation required, suitable for rented workshops
- High-speed production (up to 30 m/min)
- Stable recoiling with uniform coil hardness
- Easy knife change and automatic feeding adjustment
- Economical investment with reliable performance
Working Process
- Loading – Steel coils are placed on the uncoiler via a hydraulic loading car.
2. Trimming – A hydraulic shear trims the coil’s leading edge to remove irregular sections.
3. Slitting – Material passes through lateral guides and is slit into strips, with edge trim collected by dedicated winders.
4. Looping & Tensioning – Strips pass through a loop pit and separator before entering the tension stand, ensuring consistent and uniform strip tension.
5. Recoiling – Strips are wound under stable tension, preventing loose or collapsed coils.
6. Offloading – Finished coils are discharged by a hydraulic offloading car for transport. - The entire process is automatically synchronized, with a PLC-based control system regulating speed, length cutting, and scrap handling. Except for the initial manual threading, all operations are fully automated.
Key Functional Descriptions
- Loading Car: 10T capacity, hydraulic lifting & traversing, remote control operation.
- Cantilever Uncoiler: Hydraulic expanding mandrel, 10T capacity, 11 kW motor, disc brake.
- Guidance & Centering Device: Handwheel adjustment, width range 300–1350 mm, chrome-plated vertical rolls.
- Slitting Machine: Single top knife design, max speed 30 m/min, 22 kW motor, knife shaft Φ160 mm, NSK bearings.
- Tension Stand: Press plate type, hydraulic pressure adjustment ensures tight, uniform winding.
- Recoiler: 10T capacity, 37 kW motor, hydraulic expanding mandrel, hard chrome plated, disc brake.
- Offloading Car: 10T capacity, hydraulic lifting & traversing, anti-toppling device.
- Hydraulic System: 100L reservoir, working pressure 7–14 MPa, 7.5 kW motor, air-cooled.
- Pneumatic System: Operating pressure 0.6 MPa, air consumption 1 m³/min (air source provided by customer).
Main Technical Specifications
1. Raw Material Specifications
| Item | Specification |
| Material | Aluminum sheet, galvanized steel (GI), galvalume sheet (AZ), cold-rolled steel sheet (flat, no wave or bow) |
| Thickness | 0.3 – 1.5 mm |
| Width | 300 – 1300 mm |
| Max. Coil OD | ≤ Φ1600 mm |
| Coil ID | Φ508 mm |
| Max. Weight | 10 T |
| Tensile Strength | σb ≤ 440 N/mm² |
| Yield Strength | σs ≤ 235 N/mm² |
2. Finished Product Specifications
| Item | Specification |
| Finished Coil ID | Φ508 mm |
| Finished Coil OD | ≤ Φ1600 mm |
| Max. Weight | 10 T |
| Max. Number of Slits | 1.5 mm coil ≤ 5 strips; 1.0 mm coil ≤ 8 strips; 0.3–0.6 mm coil ≤ 15 strips |
| Min. Slit Width | 25 mm |
| Width Tolerance | ≤ ±0.05 mm |
| Edge Trim Width | 2 – 8 mm |
| Burr Height | ≤ 0.05 mm |
| Slitting Straightness | Width ≤ 50 mm: ≤ 0.8/1 m; Width > 50 mm: ≤ 0.6/1 m |
3. Machine Specifications
| Item | Specification |
| Slitting Speed | 0 – 30 m/min (Stepless) |
| Threading Speed | 0 – 15 m/min |
| Power Supply | 220V / 60Hz / 3 Phase |
| Total Power | Approx. 95 kW |
| Manning | 1 skilled operator + 2–3 workers |
| Footprint | 20 m (L) × 8 m (W) |
| Material Flow | Left to right (facing control panel) |
| Machine Color | Customized |
The simple slitting line offers an ideal balance of efficiency, flexibility, and cost-effectiveness. With its compact layout and user-friendly automation, it is the perfect solution for customers looking to optimize coil processing without heavy infrastructure modifications.