As aluminum plates are used more and more widely, quality issues during use have also begun to become prominent. Oil stains on the surface of aluminum plates is one of the common problems. Below, Qing GNEE Aluminum will explain why oil stains appear on the surface of aluminum plates.
There are generally two reasons for quality problems during the use of aluminum plates. One is the negligence of the staff during the production process, and the other is improper operation during later use. As one of the common quality losses, oil pollution problems can be avoided in the production process through operation and equipment use.
Oil stains do not refer to the stain on the aluminum plate after the production is completed, but after the aluminum plate is rolled, too much oil is brought to the surface of the aluminum tip, and there is also excess oil other than the rolling oil film, which will affect the finished product in the later stage. These visible oils will be found on the surface during inspection and slitting for production. A lot of oil is mainly distributed above and below the exit of the rolling mill or at the roll neck. After splashing, it drips on the box surface, which leads to abnormal conditions in the rolling mill roller cleaner due to oil dripping from the thickness measuring head of the rolling mill. Moreover, these oils The ingredients are not only complex but also extremely dirty.
The oil stains produced on the surface of the aluminum plate will bring a lot of harm to the surface of the aluminum plate. At the same time, when we usually judge the quality of aluminum plates, the amount of oil stain defects is also an important criterion. On the one hand, because the thickness of the aluminum plate is relatively thin, it is easy to form foam during subsequent annealing, and because there is too much oil on the surface, a lot of residues will be formed on the surface of the aluminum plate, which will also lead to poor performance in the later period. On the other hand, only the surface of the aluminum plate is clean enough to meet the aesthetic requirements for its use as decoration and packaging materials, otherwise it will be difficult to sell.
Isn't there a way to avoid these quality issues during production? Of course not. In fact, aluminum plate manufacturers can conduct comprehensive and strict inspections of production equipment before producing aluminum plates. If there is a lot of oil in the machinery and equipment itself, it should be cleaned in time and the cause should be found and resolved in a timely manner. At the same time, the board surface where the product is produced should also be cleaned. If there is oil stain that cannot be cleaned off at the beginning, such a product will be scrapped directly. If products with oil stains are allowed to be stored in the warehouse or flow into the market, subsequent product quality control will only be more difficult, and there will also be many after-sales problems that cannot be solved.