Cold roll forming is a plastic processing process in which metal plates such as coils and strips are continuously bent horizontally through multiple-pass forming rolls arranged in sequence to form specific cross-section profiles. Cold roll forming is a new process and new technology of sheet metal forming that is material-saving, energy-saving and efficient.
The general cold roll forming process includes: single sheet forming, roll forming and continuous forming, combined forming.
1. Single Sheet Forming
The single sheet forming process is to cut the sheet into a specified length in advance, and then send the sheet into the cold formed steel machine through a material selection roller. After rolling, the formed sheet can be directly collected and stored, which is especially suitable for products that are easily deformed after the sheet is formed. It is mostly used for small batch production. Its advantages are simple equipment, low investment and small footprint.
2. Roll Forming and Continuous Forming
The process of roll forming and continuous forming is basically the same. The difference between them is: the joints of the continuously formed sheets must be welded to make the sheets continuously formed while the roll forming is supplied by a single roll. The equipment investment and floor space of the cold formed steel machine required by these two processes are relatively large.
3. Combined Forming
The combined forming process is a forming process for processing special steel. Section steel has special requirements for the forming process. It requires the equipment equiped with complex cold formed steel machine, which is suitable for processing high-strength sheets. The equipment requirements are complex and the investment is high.