The flattening is a process through which starting from a coil, we obtain flat steel sheets free of deformations or undulations.
Leveling is a fast, simple and necessary process to produce flat metal sheets that we can cut to measure without tensions, and, above all, that do not require further added processes to get more flatness, which allows considerable savings and a final product of optimum quality.
The most common way in which steel, aluminum and other noble materials are prepared from its origin for its subsequent transport and use in different industries, are on large coils. That is why the process of flattening and cutting becomes indispensable. And before the cutting in the required size, the leveling, which consists of erasing the internal memory or tension until it is completely flat.
The way to achieve this is through a straightening machine that consists of several cylinders that exert a pressure that eliminates the wavy shape and leaves the sheet flat.
These rollers have an odd number, they are located in two rows with one extra roll on the bottom and when the sheet is moved through them they erase its original shape and straighten it.
If the strip has not been straightened before cutting, the sheets maintain the curvature that has produced the shape of the coil. This generates great inconveniences in the following processes since the piece will have to be discarded because it is not useful. Flattening eliminates these problems. In addition, once the flattening has been done, it can be cut to size and moved to a next stage, which could be, for example, stacking the sheets and packing them, or to continue directly to another line, such as a punching machine etc, without requiring any additional manipulation that could deteriorate its quality. Manufacturing in this way produces an impeccable final product.