Flat Product Production Line Details
Our robust flat steel production lines achieve annual outputs of tens of thousands of tons for small-to-medium-sized facilities, while large-scale operations surpass hundreds of thousands of tons. Supporting customized production, we swiftly respond to and efficiently deliver orders of any specification or material requirement. Utilizing premium raw materials and forged through a comprehensive quality management system, our flat steel boasts high strength, excellent toughness, and superior corrosion resistance. It finds extensive applications in constructing stable frameworks for building structures, manufacturing precision components for machinery, and enabling lightweighting and safety upgrades in the automotive industry.
The typical stages and components involved
1. Raw Material Preparation:
Uncoiling/Loading: If the raw material is in coil form (common for metals), an uncoiler feeds the material into the line. For sheets or plates, a loading system places them onto the conveyor.
Cleaning: The material may undergo cleaning processes to remove dirt, oil, or rust, ensuring a high-quality finished product.
2. Forming/Shaping:
Rolling: For metal flat products, rolling mills are central. Hot rolling (material is heated above its recrystallization temperature) is used to significantly reduce thickness and refine grain structure. Cold rolling (material is processed at room temperature) provides better surface finish, dimensional accuracy, and increased strength.
Extrusion: For plastics or some metals, extrusion can create continuous flat profiles.
Pressing/Stamping: For specific shapes or smaller components, presses can cut, bend, or form the material.
3. Heat Treatment (Optional but Common):
Annealing: This process involves heating the material to a specific temperature and then slowly cooling it. It's used to soften the material, improve ductility, relieve internal stresses, and refine grain structure, making it more workable.
Quenching and Tempering: For certain alloys, these processes are used to harden the material and then reduce its brittleness.
4. Surface Treatment and Finishing:
Pickling: For metals, pickling removes scale (oxides) formed during hot rolling or heat treatment, often using acid baths.
Coating: This can include galvanizing (zinc coating for corrosion resistance), painting, or applying other protective or decorative layers.
Polishing/Grinding: Improves surface smoothness and aesthetic appeal.
5. Cutting and Shearing:
Shearing: Large sheets or coils are cut into desired lengths or widths using various shearing machines (e.g., rotary shears, flying shears).
Slitting: Coils are cut longitudinally into narrower strips.
6. Inspection and Quality Control:
Throughout the line, sensors and inspection systems monitor dimensions, surface quality, and material properties to ensure the product meets specifications. This can include optical inspection, ultrasonic testing, and eddy current testing.
7. Stacking and Packaging:
Finished flat products are stacked, bundled, or recoiled, and then packaged for shipment.
Additional Processes
After rolling, flat products can undergo further treatments to meet specific requirements. These include:
Annealing: A heat treatment that makes the metal more ductile and less brittle.
Pickling: A chemical process that removes scale and impurities from the surface of the metal.
Coating: Applying a protective layer, such as zinc (galvanizing) or paint, to prevent corrosion and improve aesthetics.
Slitting and cutting: Trimming the edges and cutting the material into smaller, specified sizes or shapes.
