As the processing rate increases during the processing of aluminum plates, the deformation heat in the deformation zone increases sharply, exceeding the cooling capacity of the rolling oil, deteriorating the local pattern and causing defective patterns. Because the change in work roll profile during the rolling process mainly comes from temperature interference, and the deformation heat generated by the rolling material is the main reason for the increase in roll temperature. In order to obtain a good plate shape, timely and effective response to changes in roll profile must be to correct.
The design of the original roller type cannot be fully adapted to different specifications. If the convexity of the roller cannot completely match the convexity of the incoming plate and strip, it will easily lead to poor pattern and waste material. It is important to preheat the rolls before rolling after replacing them with new ones. However, the traditional hot roller method is difficult to achieve the ideal effect, and the hot roller time is long, resulting in a loss of yield and restricting production efficiency. This can be effectively solved by cooling the hot rollers in sections. That is, before starting rolling, the export pattern should be predicted based on work experience. For example, when rolling wide-width aluminum foil, the pattern is prone to tight edges on small edges and loose ribs in the middle. When the roll is hot, the rolling oil nozzle can be opened in sections according to the predicted pattern at the outlet, and the flow rate can be controlled to control the roll shape, so that the roll shape is close to the thermal crown during rolling. This can effectively improve the quality of the base and the quality of the pattern.
