Slitting Knives and Slitting Spacers

🔧 1. Slitting Knives

Slitting knives are the core cutting components used in slitting lines. They are designed to longitudinally slit wide steel coils into narrower strips. Suitable for a wide range of materials including stainless steel, carbon steel, galvanized steel, silicon steel, and aluminum.

Features:

• Premium Materials: Commonly used materials include alloy tool steel and powder metallurgy high-speed steel (e.g., D2, SKD11, H13, Cr12MoV, ASP2053).

• High Hardness: HRC 58–65 for excellent wear resistance and long service life.

• Sharp Edges: Ensure clean cuts with minimal burrs.

• Precise Heat Treatment: Delivers superior heat resistance and fracture toughness.

🧩 2. Slitting Spacers

Slitting spacers are placed between slitting knives to maintain consistent knife spacing and ensure precise slitting. They are essential for knife gap adjustment, positioning, and cushioning.

Features:

• High Dimensional Accuracy: Tolerance up to ±0.001 mm.

• Durable Materials: Typically made from high-hardness tool steel or stainless steel.

• Surface Finishing: Includes black oxide, chrome plating, or nickel plating.

• Various Types Available: Includes rubber spacers, metal shims, and solid precision spacers.

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📊 Technical Specifications (Sample Table)

🛠 Maintenance Guidelines

🔪 Slitting Knives

• Regular Sharpness Check: Regrind when burrs appear or cutting quality declines.

• Use Proper Cleaning Agents: Avoid metal debris buildup on the blade edge.

• Storage: Keep knives separated using dedicated racks or boxes to avoid chipping.

• Regrinding Schedule: Typically every 8–12 hours of cutting, depending on material hardness.

• Avoid Overheating: Control cutting pressure and speed to prevent annealing or deformation.

🧩 Slitting Spacers

• Avoid Scratches and Damage: Ensure spacer surfaces remain smooth for precise positioning.

• Rust Prevention: Apply anti-rust oil regularly and clean before use.

• Dimensional Calibration: Verify thickness when adjusting for different material gauges.

• Labeled Storage: Store different thicknesses separately and clearly marked to prevent mix-up.

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📊The comparison table for rubber-coated spacers, rubber rings, and washers used in steel coil slitting lines:

1. Enter Section Equipments
2.  
3. 1. Coil car and Storage
4. 2.Single And Double Heads Un-coiler & Hydraulic And Pneumatic Un-coiler
5. 3.Peeler and hold down roll arm
6. 4.Flattening Machine
7. 5.Automatic and Semi Auto Shearer & Butt Welder
8. 6.Vertical Cage Accumulator​ & Horizontal Loop Accumulator & Landing Horizontal Spiral Loop Accumulator
   

1.  
2. 1. Eddy current machine
3. 2. Seam annealing machine
   
4. 3. Straightener machine
   
5. 4. Chamfer and end facer machine
   
6. 5. Hydro Tester machine
   
7. 6. Threading machine
   
8. 7. Painting and oil machine
   
9. 8. Automatic bundle and package machine

1.  
2. 1. Rollers, Moulds, Dies, D2,D3 material to choose
3. 2. Ferrite, Impeder, Fiberglass tube
   
4. 3. HSS saw blades, TCT Saw blades, Friction saw blades
   
5. 4. OD burr remove inserts, ID burr remover inserts
   
6. 5. HF welder Induction Coil and other HF welder spare parts
   
7. 6. Copper tube for induction Coil, PTFE pipe for Induction Coil
   
8. 7. Mosfet, Boards
   
9. 8. Steel pipe Strapping machine
   
10. 9. Zinc Spray Machine, Zinc wire, Zinc spray gun

1. Why Choose Us?
   

2. 1.Leading Technology, Reliable Quality, Excellent Service! Optimized Design, High quality material select!  Heat treatment process guarantee!

3. 2.Spiral bevel gear, drum gear coupling and carburization. Gear teeth quenching. Driven system stable, efficient and wearable with lower noise.

4. 3.High precision wear resisting and Long life of toolings. All the machine Lathes, Key Grooves are positioned and Milled by CNC.

5. 4.Quality department make sure the material of the raw materials quality, and ensure the machine running perfect.

After-sales service

1. 1.Machine test running videos will supply to customer before shipment.
2. 2.Online techenical support WHOLE LIFT FREE.
   
3. 3.Professional engineers team to install the machine,  train your employee well.
   
4. 4.One year warranty and life-long technical support.
   
5. 5 .24 hours for engineer response.
   
6. 6.Your business relationship with us will be confidential to any third party.
7. 7.  We welcome customers to visit our factory anytime.