Cold rolling forming is a processing technique that involves rolling metal materials at room temperature to induce plastic deformation, thereby achieving the desired shape and dimensions. The workflow is as follows:
1. Raw Material Preparation: Select metal sheets that meet the required specifications and inspect their chemical composition, mechanical properties, and other indicators to ensure quality compliance. Additionally, clean the sheet surfaces to remove impurities such as oil stains and rust, creating optimal conditions for subsequent processing.
2. Pre-Rolling Treatment: Based on product requirements, cut the sheets to the appropriate dimensions. Then, feed the sheets into the loading device of the rolling mill and adjust parameters such as roll gap and rolling speed to prepare for the rolling process.
3. Cold Rolling Process: Start the rolling mill, where the driving mechanism rotates the rolls. Under the pressure exerted by the upper and lower rolls, the sheet thickness gradually decreases, while its width and length increase accordingly. During rolling, it is essential to strictly control the rolling force, rolling speed, and cooling/lubrication conditions to ensure dimensional accuracy and surface quality. Multiple rolling passes are employed to progressively achieve the desired shape and dimensions.
4. Post-Rolling Treatment: After rolling, straighten the formed product to eliminate defects such as waviness and warping caused during the rolling process, ensuring flatness requirements are met. Subsequently, perform surface finishing treatments, such as cleaning, degreasing, and passivation, to enhance the product's corrosion resistance and appearance. Finally, conduct quality inspections according to standards, measuring indicators like dimensional accuracy, surface quality, and mechanical properties. Qualified products are then packaged and stored.