How can the used strip steel slitting line ensure the best shearing effect for strip steel of different materials?

Publish Time: 2025-01-15

For strip steel of different materials, the used strip steel slitting line needs to adjust the shearing parameters and equipment settings according to the characteristics of the material to ensure the best shearing effect.

1. Material hardness

Soft materials: such as low-carbon steel, the material is soft, and burrs and deformation are easy to occur during shearing. The appropriate shear gap should be selected, usually 1-3% of the material thickness.

Hard materials: such as high-carbon steel or alloy steel, the material is hard, difficult to shear, and easy to damage the tool. A sharper shear blade should be used, and the shear gap should be appropriately increased, which may be 3-5% of the material thickness.

2. Material thickness

Thin materials: such as strip steel with a thickness of less than 1 mm, are prone to twisting and curling during shearing. High-precision guides and clamping devices are required to ensure stability during shearing.

Thick materials: such as strip steel with a thickness of more than 5 mm, the shearing force is large, requiring greater shearing force and stronger equipment structure. Select the appropriate tool material and design to withstand greater shearing force.

3. Material surface quality

Smooth surface: such as cold-rolled steel, the surface quality is good, and the shear blade should be kept sharp during shearing to obtain a smooth shearing surface and reduce burrs.

Rough surface: such as hot-rolled steel, the surface may have oxide scale and impurities, and surface treatment such as grinding or cleaning is required before shearing to avoid tool wear.

4. Material ductility

High ductility materials: such as copper alloys, are prone to stretching and deformation during shearing. A lower shearing speed and appropriate shearing angle should be used to reduce material deformation.

Low ductility materials: such as cast iron, are prone to cracks and debris during shearing. A higher shearing force and sharp tools are required, while the shearing speed is controlled to reduce impact.

5. Shearing accuracy requirements

High precision requirements: such as thin steel plates used in the electronics industry, require extremely high dimensional accuracy and surface quality. Precision shearing equipment should be used, equipped with high-precision guiding and positioning systems.

General accuracy requirements: such as steel bars used in construction, the shearing accuracy requirements are relatively low, and the equipment can be relatively simple, but basic dimensional accuracy and shearing quality must also be guaranteed.

6. Equipment adjustment and maintenance

Regular inspection and calibration: ensure the parallelism and gap of the shear blades are accurate to avoid shear quality problems caused by wear.

Lubrication system: keep the shear area fully lubricated, reduce friction, extend tool life, and improve shear efficiency.

Automated control: use advanced control systems to monitor and adjust shear parameters in real time to adapt to strip steel of different materials and thicknesses.

7. Process optimization

Shear speed: adjust the shear speed according to the material characteristics. Too fast may lead to incomplete shearing, and too slow will affect production efficiency.

Tool selection: select tool materials and geometries suitable for the material, such as high-speed steel, cemented carbide, etc.

Cooling system: For high shear speeds and high shear forces, a cooling system may be required to prevent the tool from overheating.

For strip steel of different materials, the used strip steel slitting line needs to comprehensively consider factors such as material hardness, thickness, surface quality, ductility, and shear accuracy requirements, and ensure the best shearing effect by adjusting the shear gap, shear speed, tool material, and equipment parameters. At the same time, regular equipment maintenance and process optimization are also the key to ensuring shear quality.