6061 aluminum plate is the most useful appearance parts or electronic accessories, 6061 aluminum plate common problems have the following three points: 6061 aluminum plate appearance problems, in addition to the case and billet related, most of the reasons come from the machine in the process of consumption derived. There are many reasons for black silk, like the rolling mill oil drop due to mismanagement, such as too much pressure or too much tension formed on the surface of the indentation, if the thin material rolling, these dark marks will become more and more fine, forming a dark line or black line, and sometimes it is not clear whether it is oil or mark, and basically can not see what color difference in appearance.
But after oxidation is very obvious, for customers, see the appearance of the phenomenon of differences, is certainly to be rejected. Black silk after oxidation is the most life, once presented in this situation, there is no room for survival, the loss and results are also unable to compensate. Secondly, color difference, ordinary appearance parts of the product, color difference can not be presented, any customer is unwilling to bear the similar "two skin face" of the product, to eliminate these problems, or rely on the source to control.
Aluminum plate sand hole reason: sand hole is generally the internal structure problem, when casting billet due to impurities or water vapor did not clean, or other elements did not stir average and other elements formed, so the request in the ingot source link to control detection.
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