The Automatic Steel Coil Slitting Line is designed for precision longitudinal cutting of carbon steel coils into multiple narrow strips. The ZTRFM-6X1300 model provides an efficient solution for steel service centers, metal processing factories, and industrial manufacturers that require accurate coil slitting and stable production performance.
With a maximum processing thickness of 6mm and a coil width of up to 1300mm, this heavy-duty steel coil slitting machine handles a wide range of carbon steel materials. Moreover, its hydraulic loading system, precision slitting head, automatic tension control, and hydraulic recoiler work together to ensure reliable strip processing. As a result, manufacturers can improve production efficiency while preparing consistent steel strips for downstream manufacturing operations
1. Overview of ZTRFM-6X1300 Automatic Slitting Line
The ZTRFM-6X1300 is a complete industrial steel coil slitting line developed for processing ordinary carbon steel coils. It integrates coil loading, uncoiling, leveling, head cutting, strip guiding, longitudinal slitting, scrap winding, tension control, and recoiling into one production system.
During operation, the steel coil enters the production line through a hydraulic entry coil car. After uncoiling and preliminary leveling, the steel strip passes through the slitting machine, where precision circular blades divide the material into the required strip widths. Subsequently, the tension stand and recoiler collect the finished strips into compact coils.
In addition, the PLC electrical control system coordinates the production process and supports synchronized line operation. Therefore, the machine is suitable for manufacturers seeking a reliable and integrated solution for medium and heavy-gauge steel coil processing.
2. Main Technical Specifications
The following table presents the main technical parameters of the ZTRFM-6X1300 automatic steel slitting machine.
| Item | Technical Specification |
|---|---|
| Machine Model | ZTRFM-6X1300 |
| Applicable Material | Carbon Steel |
| Maximum Tensile Strength | 450 MPa |
| Maximum Yield Strength | 260 MPa |
| Material Thickness | 1–6 mm |
| Material Width | 600–1300 mm |
| Steel Coil Inner Diameter | 610 / 760 mm |
| Steel Coil Outer Diameter | 900–2100 mm |
| Maximum Coil Weight | 20 Tons |
| Slitting Shaft Diameter | 260 mm |
| Slitting Blade Specification | Φ260 × Φ400 × 15 mm |
| Blade Material | H13K |
| Maximum Slitting Quantity | Up to 25 strips (depending on thickness) |
| Slitting Width Accuracy | ±0.1 mm |
| Recoiling Coil Inner Diameter | 610 mm |
| Maximum Recoiling Weight | 20 Tons |
| Line Speed (1–3 mm) | 0–80 m/min |
| Line Speed (3–6 mm) | 0–40 m/min |
| Installed Power | Approximately 330 kW |
| Power Supply | 380V / 50Hz / 3 Phase |
| Approximate Line Dimensions | 30 m × 10 m |
| Production Operators | 1 Mechanical Engineer + 2 Workers |
| Line Direction | Right to Left |
The maximum slitting quantity varies according to material thickness:
- 1 mm thickness: Up to 25 strips
- 2 mm thickness: Up to 15 strips
- 2.5 mm thickness: Up to 12 strips
- 3 mm thickness: Up to 10 strips
- 5–6 mm thickness: Up to 6 strips
These specifications make the ZTRFM-6X1300 a versatile 6mm steel coil slitting line for different production requirements.
3. Complete Production Process of the Steel Coil Slitting Line
The complete production line operates from right to left. Each machine section performs a specific function to ensure continuous material feeding, accurate slitting, and stable recoiling.
- V-Shaped Coil Saddle: Supports the steel coil before loading and protects the hydraulic entry coil car.
- Hydraulic Entry Coil Car: Lifts and moves coils horizontally to position them on the decoiler.
- Hydraulic Double-Head Decoiler: Expands hydraulically to hold the coil and provides controlled uncoiling.
- Hydraulic Press and Pinch Device: Feeds the strip and performs preliminary leveling through pinch and leveling rollers.
- Hydraulic Head Cutter: Cuts the irregular coil head to prepare the material for the slitting process.
- Roller Table: Transfers the steel strip smoothly between production sections.
- Side Guide Device: Keeps the strip aligned before it enters the slitting machine.
- Slitting Machine: Uses precision circular blades to divide the steel coil into multiple narrow strips.
- Hydraulic Scrap Winder: Collects and winds the edge scrap generated during slitting.
- Looper: Stores material temporarily and helps coordinate the production process.
- Tension Stand: Separates the strips and controls tension before recoiling.
- Hydraulic Recoiler: Winds the finished steel strips into compact coils.
- Hydraulic Exit Coil Car: Supports and unloads the finished coils from the recoiler.
Furthermore, the hydraulic and electrical systems coordinate the main production equipment. This integrated arrangement helps maintain stable operation throughout the automatic coil slitting process.
4. Key Components and Technical Features
4.1 Hydraulic Entry Coil Car and Double-Head Decoiler
The hydraulic entry coil car is designed for handling steel coils weighing up to 20 tons. A Φ200 mm hydraulic cylinder controls vertical lifting, while a 4 kW cycloidal motor drives horizontal movement. Four guide pillars provide support during lifting.
The hydraulic double-head decoiler uses an expanding structure to hold the steel coil securely. Both decoiler heads can move horizontally for coil centering, helping position the material correctly before production starts. One decoiler is equipped with a braking device to control uncoiling operation.
4.2 Hydraulic Press, Pinch and Preliminary Leveling Device
This section includes two pinch rollers and five leveling rollers. Driven by a 45 kW AC motor, the system feeds the steel strip and improves its flatness before slitting.
Additionally, operators can manually adjust the working roller gap according to material requirements. The 4 kW motor-driven shovel head helps rotate the coil and guide the strip into the production line.
4.3 Precision Steel Coil Slitting Machine
The slitting head is the core working section of the entire steel coil slitting machine. It is equipped with two slitting shafts with a diameter of Φ260 mm, manufactured from 40Cr steel and heat-treated to HB225–250.
The circular slitting blades are made from H13K alloy material, with a specification of Φ260 × Φ400 × 15 mm. The machine uses a 90 kW DC motor together with a reducer, universal couplings, and a gear distribution system to drive the slitting shafts.
Moreover, the upper and lower shaft positions can be adjusted through a motor-driven lifting mechanism. The movable frame uses a hydraulic withdrawal structure, making blade replacement and maintenance more convenient.
With an adjustable blade arrangement, the machine can process different strip width combinations according to production requirements.
4.4 Hydraulic Scrap Winder
During longitudinal slitting, narrow scrap strips are generated along the edges of the steel material. The hydraulic scrap winder collects this waste material to prevent it from interfering with the production process.
The scrap winding system is equipped with two 7.5 kW motors and a reducer, providing an effective solution for edge scrap collection.
4.5 Looper and Tension Stand
The looper provides temporary strip storage and helps coordinate material movement between the slitting section and recoiler. Its roller table is hydraulically operated, while chrome-plated rollers and Bakelite plates help protect the steel surface from scratches.
After slitting, the strips enter the tension stand. This section includes strip separation devices, a hydraulic tension pressing system, and guide rollers. It distributes the strips and adjusts recoiling tension to help produce neat and compact finished coils.
In addition, the separation shaft uses a linear guide rail withdrawal structure, allowing convenient adjustments when changing slitting width combinations.
4.6 Hydraulic Recoiler and Exit Coil Car
The recoiler is driven by a 160 kW DC motor and features a hydraulic expanding mandrel. Four fan-shaped plates expand to form a complete circular winding surface, ensuring stable contact with the inner diameter of the finished coil.
The recoiler also includes an automatic clamping jaw, hydraulic pressure arm, separating spacers, and hydraulic pushing device. These components help secure strip heads, maintain winding alignment, and assist with finished coil unloading.
The hydraulic exit coil car supports finished coils weighing up to 20 tons. It uses a Φ200 mm hydraulic cylinder and four guide pillars for vertical lifting, together with motor-driven horizontal movement.
5. PLC Electrical Control and Hydraulic System
The ZTRFM-6X1300 automatic slitting line uses a centralized PLC control system with an LCD touchscreen. Operators can monitor and control the production line through the electrical control cabinet and operation panel.
The electrical system coordinates the equipment and supports synchronized speed control. Meanwhile, the hydraulic station operates the loading car, decoiler, cutter, looper, recoiler, and other hydraulic components.
The hydraulic system operates at a working pressure of 6.3–16 MPa and includes an 11 kW AC motor, hydraulic valves, pipelines, and a cooling system. A pressure storage device helps reduce unnecessary motor operation when the required pressure is reached.
Main Electrical and Mechanical Component Brands
| Component | Brand |
|---|---|
| PLC | Siemens |
| Touchscreen | MCGS |
| Low-Voltage Components | Schneider |
| Main Electrical Components | CHNT |
| AC Motors | DACHUAN |
| Cycloidal Reducer | HUIBANG or equivalent domestic brand |
| Frequency Converter | SINEE |
| DC Motor | KEDI |
| DC Controller | 590C |
| Reducer | TAIXIANG |
| Hydraulic Valves | HUADE |
| Main Bearings | HB / WB / LB |
6. Applications of the Automatic Steel Coil Slitting Line
The automatic steel coil slitting line is mainly designed for processing ordinary carbon steel coils into narrower strips for subsequent manufacturing operations.
These slit steel strips can serve as raw materials for various industrial applications, including:
- Metal stamping and sheet metal fabrication
- Steel pipe and tube manufacturing
- Roll forming production lines
- Automotive component manufacturing
- Metal structure and fabrication workshops
- Industrial machinery production
- Steel service centers and coil processing facilities
By converting wide steel coils into narrower strips, manufacturers can prepare raw materials that better match the requirements of their downstream production equipment.
7. Why Choose ZTRFM Steel Coil Slitting Equipment?
Choosing suitable steel coil slitting equipment is important for maintaining production efficiency and consistent strip quality. The ZTRFM-6X1300 offers several practical advantages.
Heavy-Duty Coil Handling
The hydraulic loading and unloading systems support steel coils weighing up to 20 tons, reducing the need for manual handling during material transfer.
Wide Material Processing Range
The machine processes carbon steel with thicknesses from 1mm to 6mm and widths from 600mm to 1300mm, providing flexibility for different coil processing requirements.
Precision Slitting Performance
The Φ260 mm slitting shafts and H13K alloy blades support accurate longitudinal cutting, with a specified slitting width accuracy of ±0.1mm.
Efficient Production Speed
For 1–3mm material, the line speed reaches 80 m/min. For thicker materials from 3–6mm, the maximum line speed is 40 m/min. Actual operating speed depends on material specifications and production conditions.
Integrated Production Design
From coil loading to finished coil unloading, the complete production line combines multiple processing sections into one coordinated system. Consequently, manufacturers can simplify material handling and improve workflow efficiency.
8. Frequently Asked Questions About Steel Coil Slitting Lines
Q1: What materials can the ZTRFM-6X1300 slitting line process?
The machine is designed for ordinary carbon steel coils with a maximum tensile strength of 450 MPa and a maximum yield strength of 260 MPa.
Q2: What is the maximum material thickness?
The maximum processing thickness is 6mm. The machine can process steel coils with thicknesses ranging from 1mm to 6mm.
Q3: What is the maximum steel coil width?
The maximum input coil width is 1300mm, while the specified minimum width is 600mm.
Q4: How many strips can the machine produce at one time?
The maximum slitting quantity depends on material thickness. According to the technical specifications, the machine can slit up to 25 strips at 1mm thickness, 15 strips at 2mm, 10 strips at 3mm, and 6 strips at 5–6mm.
Q5: What is the slitting accuracy?
The specified slitting width accuracy is ±0.1mm. Actual results also depend on material conditions, blade setup, and operating adjustments.
Q6: What is the maximum production speed?
The line speed is 0–80 m/min for 1–3mm steel and 0–40 m/min for 3–6mm steel.
9. Contact ZTRFM for an Automatic Steel Coil Slitting Line
ZTRFM provides industrial automatic steel coil slitting lines for manufacturers and steel processing companies worldwide. The ZTRFM-6X1300 model is designed for carbon steel coil processing, combining hydraulic coil handling, precision slitting, strip separation, tension control, and automatic recoiling.
If you are planning to purchase a steel coil slitting machine, please share your material thickness, coil width, steel grade, required strip widths, and production capacity. Our engineering team can evaluate your requirements and provide a suitable machine configuration.
Contact ZTRFM today to discuss your steel coil slitting project and request a technical proposal.
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