Sometimes we will find some defects on the surface of aluminum plate, which will affect our use and beauty. What's the reason? Next, the aluminum plate manufacturer analyzes the reasons for the surface defects of aluminum plate as follows:
1. The shape of the folding (folding) roller is not correct. For example, the bearing of the calender heats up, which makes the two ends of the roller expand, and the pressing plate results in the middle thick and thin sides; the wave amount of the flat plate is too large, which makes the light amount too large, causing compression; after the plate is calendered, it is easy to fold. The thickness of both sides of the plate is large, and it is easy to produce buckling.
2. The surface of foam ingot is uneven and dirty, which was not cleaned before installation; after etching, there are traces of etching and water washing on the surface of ingot and aluminum composite plate; if the heating time is too long or the temperature is too high, the surface of ingot will be oxidized.
3. When the billet is hot rolled, the pressure is too high and the ingot end cracks; the heating of the casting block is too high or too low.
The above is the surface defect analysis of aluminum plate brought by aluminum plate manufacturers, hope to help you!