Aluminum plates are widely used in many industries nowadays, and have been favored by many enterprises due to their superior quality and performance!
There are also many types of aluminum plates, such as common ultra wide aluminum plates, patterned aluminum plates, alloy aluminum plates, pure aluminum plates, and thin aluminum plates. Different types of aluminum plates have certain differences in appearance and application scope, but they have one thing in common, which is that black spots may appear on the surface of the aluminum plate due to improper use and storage environment. So let's follow Jiangsu Guofa Metal Products Co., Ltd. to learn how to avoid black spots on the surface of aluminum plates!
Firstly, during the aluminum plate electroplating process, certain production steps may undergo changes, leading to failure. However, after investigation, it was found that there was no change in production conditions, and similar parts processed during the same period did not experience such malfunctions. Therefore, the possibility of changing the electroplating production conditions has been ruled out. Based on past production experience, the common reason for discoloration of silver plated parts is the influence of sulfur on the silver plating layer.
In the past, it was common for silver plated parts to not be packaged, sealed, and stored for a long time in the electroplating workshop, resulting in yellowing of the silver plating layer. However, after silver plating the defective parts, they were promptly packaged and stored in dry containers, indicating that this is not affected by the factory air atmosphere. During the painting process, it was found that the entire batch of repairs were recorded on the top cover. The important reason is that the gap is not blocked, allowing the paint mist to enter and adhere to the surface of the silver layer, and cannot be removed. To prevent such malfunctions, it is recommended to seal the gaps with 3M tape during the handling process to prevent paint mist from entering.
Through this elimination method, the root cause of the problem has been identified, and measures should be taken to prevent the recurrence of hidden dangers, making the surface of the aluminum plate as shiny as new and greatly improving the delivery rate.
The above content provides a detailed introduction to the causes of black spots on the surface of aluminum plates and ways to avoid this phenomenon. We hope it will be helpful to everyone after reading it! The quality and performance of aluminum plate itself are very superior, but there may be black spots on its surface due to some factors. Once this situation occurs, it will directly affect the use effect of aluminum plate, so everyone must pay attention to it in daily life!
