Definition and characteristics of cold rolled coils

Cold-rolled coils are hot-rolled coils or steel plates that are transformed into cold-worked steel plates with specific tolerances, flatness and surface quality after a series of processing treatments. This process gives cold-rolled coils unique physical properties, making them widely used in automobiles, home appliances, building materials, machinery manufacturing and other fields.

First of all, the cold-rolled coil has a smooth surface and uniform color. Not only does it give it a unique appearance, but more importantly, this surface treatment method gives the cold-rolled coil a good silvery effect, which greatly enhances its commercial value.

Secondly, cold-rolled coils have excellent processing performance and weldability. This means it can be easily cut, trimmed, stamped and welded during the production process to meet the specific needs of different industries. This flexible production method makes cold rolled coil widely used in various industries.

Finally, cold rolled coils have high strength and hardness, good wear resistance and long service life. This is because it has undergone cold working during the manufacturing process, making its internal grains finer and denser, thus improving its mechanical properties. This characteristic allows cold-rolled coils to remain stable when subjected to high loads and complex working conditions, extending their service life.

Cold rolled coil process flow

The process flow of cold rolled coil is as follows:

1.Processing preparation: The steel plate that has been produced needs to be prepared, which is like sharpening the knife for the subsequent cold rolling process. These preparations include cutting, smoothing, and removing rust slag, etc., to ensure the quality of subsequent cold rolling processing.

2. Pickling: Just like we take a bath, the cut steel plates also need to "take a bath". It uses pickling equipment to remove iron filings, rust residue, etc. to obtain a smoother and smoother surface.

3. Cold rolling: The pickled steel plate is like being sent to a "steel rolling mill". This process can be divided into multiple stages. According to different cold rolling processing requirements, steel plate laying, pre-cooling, rough rolling, intermediate rolling, finishing rolling and other processes can be carried out in sequence.

4. Annealing: During the cold rolling process, the steel plate will produce large strains and stresses. It's like we need to relax after a stressful job. Annealing treatment is such a "relaxation" process, which can improve the physical properties after cold rolling, while reducing stress and ensuring product quality.

5. Galvanizing or spraying: Finally, in order to enhance the durability and rust-proof performance of cold-rolled coils and make them more suitable for use in the external environment, we need to perform anti-corrosion treatments such as galvanizing or spraying.

Cold rolled coil equipment and application areas

The production process of cold-rolled coils involves a variety of equipment, such as pickling equipment, cold rolling mills, annealing furnaces, galvanizing equipment, etc. These equipments are all high-precision and high-efficiency automated equipment. They can maximize the production efficiency during the production process. It can effectively reduce manual intervention and effectively improve production efficiency. Cold-rolled coils are used in a wide range of applications, including automobiles, home appliances, building materials, and machinery manufacturing. Especially in industries such as automobiles and home appliances, cold-rolled coils are being used more and more widely due to their good surface flatness, silver luster and strong wear resistance.