Now aluminum plate has become a popular decoration information, benefit from the excellent function of aluminum plate, strong corrosion resistance, lighter quality, many industries will aluminum plate as a substitute for traditional metal data products. So in recent years, many aluminum plate manufacturers have poured out. Aluminum plate manufacturers may encounter defects on the appearance of aluminum plate when making aluminum plate. Then, do you know the causes of defects on the appearance of aluminum plate?
1. The press folding (folding) roll shape is not correct, such as calender bearing heating, so that the two ends of the roll swell, the result of the pressure plate center thick and thin;
The wave of the plate is too large before pressing, so that the amount of pressing is too large, and then press folding;
When the sheet is calender, it is easy to fold when it is not feeding properly. The thickness difference between the two ends of the plate is large, and it is easy to fold.
2. Appearance bubble: the surface of the ingot uneven place has dirty east, not clean before loading;
After corrosion washing, there are residual traces of corrosion washing on the surface of cast block and aluminum plate;
If the heating time is too long or the temperature is too high, the appearance of the cast block will be oxidized.
3. Casting block cracking: hot rolling pressure is too large, from the end of the ingot cracking; The casting heat temperature is too high or too low.
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