In recent years, cold-formed steel products as important structural parts have been widely used in many fields such as construction, automobile manufacturing, shipbuilding, electronics industry and machinery manufacturing. Its products range from ordinary guide rails, doors and windows and other structural parts to some special profiles manufactured for special purposes. The types are extremely wide.
Cold roll forming is a new process and new technology of sheet metal forming that is material-saving, energy-saving and efficient. Using this process, not only can produce high-quality steel products, but also can shorten the product development cycle, improve production efficiency, thereby improving the market competitiveness of enterprises.
The cold roll forming machine has the principle of the average force of each pass, which can extend the service life of the roll. In production, it should be designed with balanced forces, accurate processing, and convenient installation and adjustment. The cold bending machine ensures the strength of the material, improves the quality of the supporting steel arch, greatly improves the work efficiency, and the operation is simple and clear. Compared with the two, both have good working performance.
The general cold bending forming process includes: single sheet forming, roll forming and continuous forming, combined forming.
The single sheet forming process is to cut the sheet into a specified length in advance, and then send the sheet into the forming machine through a material selection roller. After rolling, the profile 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 floor space.
The process of roll forming and continuous forming is basically the same. The difference between them is that the joints of the continuously formed sheets must be welded to make the sheets continuously formed; the roll forming is supplied in a single roll. The equipment investment and floor space required by these two processes are relatively large.
The combined forming process is a forming process for processing special materials. Sectional steel has special requirements on the forming process and requires complex forming equipment, which is suitable for the processing of high-strength plate. The equipment requirements are complex and the investment is high.