1, stretching straightening (stretching) The most basic stretching straightening (stretching) is to stretch both ends of a plate with a fixed clamping device and a movable clamping device, so that the plate is plastically deformed to achieve the purpose of stretching straightening, which belongs to the purpose of pure stretching. ?

2. Continuous stretch straightening The continuous stretch straightening method of rolled aluminum strip is to use more tension rollers at the inlet/outlet. Using the tension between tension rollers, the aluminum strip is plastically deformed, so as to achieve the purpose of straightening the aluminum strip.

3. Roller straightening adopts the process of straightening aluminum strip with multi-roller straightener. Even if the aluminum strip is bent and plastically deformed, the residual stress and waves of the aluminum strip should be eliminated by repeated bending, so as to eliminate the unevenness of the plate.

4. Continuous stretch-bending straightening Continuous stretch-bending straightener combines the characteristics of continuous stretch straightener and continuous roller straightener. Under the combined action of stretching and continuous alternating bending, the aluminum strip is plastically deformed, and the straightening effect is obtained.

When the aluminum strip is straightened on the roller straightener, it is bent and plastically deformed under the pressure of the straightening roller. When the aluminum strip is straightened on the tension leveler, it is under the action of the tension roller that the cross section produces uniform tensile stress, that is, uniform plastic elongation deformation is obtained. When the aluminum strip is straightened on the continuous stretching and bending straightener, it is stretched by the tension roller and repeatedly bent by the bending roller. Therefore, the aluminum strip is straightened under the combined action of tensile deformation and bending deformation.

Generally speaking, there are:

Bilateral wave, unilateral wave, medium wave, rib wave, etc. , even head and tail warping, lateral bending and ladle bending and other defects, as well as potential bad flatness. If these defects are not eliminated, it will affect the deep processing of strip steel and cannot meet the requirements of market development. In order to eliminate the defects of bad surface and shape of aluminum strip during cold rolling, it is necessary to clean, stretch, bend and straighten the cold rolled aluminum strip.