The aluminum strip undergoes a series of deformation processes under the action of rolling rollers to be rolled into the required strips. The final aluminum foil profile is affected by many factors. In summary, these factors can be divided into internal factors (metal nature) and external factors (rolling conditions). ) Two aspects.
The physical properties of the metal itself (such as hardening characteristics, deformation resistance) directly affect the size of the rolling pressure, which is closely related to deformation. The geometric characteristics of the metal, especially the aspect ratio of the sheet and the crown of the raw plate are another important factor affecting the deformation; the influence of the rolling conditions is more complicated, and all factors that can affect the rolling pressure and the crown of the rolling roll (such as friction Conditions, roll diameter, tension, rolling speed, bending force, wear, etc.) and factors that can change the contact pressure distribution between rolling (such as roll shape, initial roll crown) can affect the strip shape.
The thickness accuracy and flatness of aluminum foil are two important indicators that reflect the quality of aluminum foil products. Aluminum foil longitudinal thickness accuracy detection components, closed-loop shape control system by means of various parameter control. There are many ways to control and adjust the plate shape, which can be roughly divided into three categories:
One is to start control from the raw materials, that is, control the original convexity of the raw materials to meet certain requirements.
The second is to adjust the rolling process, such as oil painting rolling schedule, changing the front and back tension, speed, applying bending force, rolling roller cooling section control, etc.
The third is equipment adjustment. Various new rolling mills can effectively control the strip shape.
