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The reasons of 5052 aluminum plate black wire

Edit:admin Date: 2018-03-12 17:06
5052 aluminum plate is commonly used in appearance parts or electronic accessories, which is an aluminum product with very wide range of use, but there are some common problems in the aluminum plate production, such as color difference, black wire and sand hole. What are the reasons of them?

There are many reasons for 5052 aluminum plate’s black wire, such as the oil of the subsidiary machine due to poor management of the rolling mill oil, and for example the pressure caused by excessive pressure or tension on the plate surface. It will become increasingly finer, forming dark lines or black lines. Sometimes it is not clear whether it is oil or traces, or even if there is no visible color difference on the surface, but the performance after oxidation is very obvious. In terms of the appearance of inconsistencies, it is definitely a rejection. The appearance of black silk after oxidation is the most fatal. Once this happens, there is little room for survival. And the loss and consequences it brings are irreparable.
Second, color difference, the general appearance of the product, the color difference can not appear, any customer is not willing to accept similar "two skin face," said the product, to eliminate these problems, or to rely on the source machine to control.
Sand holes: The sand holes are generally an internal structural problem. When the billet is ingot, impurities or water vapor is not removed, or other elements are not evenly stirred. Therefore, it is required to control and inspect the source of the ingot well.
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