Summary： Generally speaking, the three elements of aluminum foil rolling are equipment, rolling oil and operating process: under a certain installed level, the quality
Generally speaking, the three elements of aluminum foil rolling are equipment, rolling oil and operating process: under a certain installed level, the quality of the roll is an important equipment factor. The rolling process of aluminum foil, such as roll shape and surface roughness, pass processing rate, rolling speed, tension, rolling oil physical and chemical indicators, etc. will affect the stability of the rolling process and the quality of the finished product. Close ties and influence.
Surface quality control of aluminum foil Due to the differences in equipment performance, rolling process, roll parameters, and control methods of aluminum foil rolling mills and cold rolling mills, the cold rolling finished product passes the first pass of the foil rolling. important. In the first pass of foil rolling, a reasonable pass processing rate must be controlled to ensure the subsequent rolling smoothly. The rolling parameters are balanced to obtain better aluminum foil surface and shape. The first pass processing rate of foil rolling is generally controlled below 50%. The processing rate in the middle pass can be larger, but the processing rate of the finished pass needs to be reduced and controlled below 50% to ensure a good surface quality of the finished product. As a decorative material, it must be beautiful, the surface is clean, and there are no stripes.
The shape control of the finished product can only provide aluminum foil with better shape, which can satisfy the aluminum foil's wrinkle-free and uniform compounding with plastics in the process of color coating and remolding. Look for the company's 1 # aluminum foil rolling mill with automatic shape control system. It is more beneficial to control the shape of the plate. With certain rolling process parameters, a satisfactory shape can be obtained; the 2 # aluminum foil rolling mill is not equipped with a shape gauge. The finished product is mainly controlled by operating skills and direct observation of the plate surface during rolling. The shape of the plate is different from that of the No. 1 rolling mill, especially in the rolling force and tension before and after.
Control of oil on the surface When the aluminum foil for aluminum-plastic composite decoration has oil on the surface, it cannot be compounded with plastic, especially the aluminum foil used as the bottom plate. In order to reduce costs, users basically do not pass the cleaning process. —Some small companies do not even clean the aluminum foil used for the panel, which puts forward higher requirements on the surface of the aluminum foil. During the foil rolling process, our company adopts the following degreasing measures:
(1) Formulate reasonable rolling process parameters and appropriately reduce the rolling speed; (2) Use rolling oil with a lower viscosity and reasonably control the content of rolling oil additives; (3) Select reasonable roll grinding parameters; (4) Factory improvement of the degreasing device of the aluminum rolling mill. At the same time, degreasing measures such as the addition of wind power and isolation devices are used when scraping the rolled products.