Roll forming is a type of rolling involving the continuous bending of a long strip of sheet metal into a desired cross-section. The strip passed through sets of rolls mounted on consecutive stands, each set performing only an incremental part of the bend, until the desired cross-section (profile) is obtained. Roll forming is ideal for producing constant-profile parts with long lengths and in large quantities.
A variety of cross-section profiles can be produced, but each profile requires a carefully crafted set of roll tools. Design of the rolls starts with a flower pattern, which is the sequence of profile cross-sections, one profile for each stand of rolls. The roll contours are then derived from the flower pattern profiles. Because of the high cost of the roll sets, computer simulation is often used to develop or validate the roll designs and optimize the forming process to minimize the number of stands and material stresses in the final product.
Roll-formed sections may have advantages over extrusions of a similar shapes. Roll formed parts may be much lighter, with thinner walls possible than in the extrusion process, and stronger, having been work hardened in a cold state. Parts can be made having a finish or already painted. In addition, the roll forming process is more rapid and takes less energy than extrusion.
lotosforming is a world roll forming machine supplyer in the production of roll forming machine systems.lotosforming designs, builds and manufactures roll forming machines.
color steel roll forming machine becomes more and more popular. When we build the constructions, we need the roofing sheet roll forming machine, wall panel roll forming machine, fully automatic C purlin roll forming machine, shearing machine, bending machine and so on.
For the roofing sheet roll forming machine, the customer use the trapezoidal sheet panel, glazed tile panel,….it depend on the customer various requirements.
For the C purlin roll forming machine, it is widely used in steel purlin and steel structure building wall beam. It is very important in the steel construction, it has a very good bearing capacity.
For the wall panel roll forming machine, the wall panel peak normally a litter low than the roof panel peak. We can customize the machine as the customer demands.