How To Solve The Problem Of Uneven Aluminum Alloy Sheet Oxid

What reason causes uneven aluminum alloy sheet oxide film color?In particular are mainly the following three issues:

1, aluminum workpiece size is too large, the operation in the groove when swing is too big, edge and center parts contact with the solution, update, exchange have too big difference, which can lead to oxidation film color inconsistencies.

Prevention methods: aluminum oxide artifacts when the oscillation amplitude is smaller, the static treatment can also, but when the temperature of the solution is too low prone to map shape tinea, look unnatural.

2, The bags aluminum processing part package aluminum layer is destroyed, and cutting out the outer package belongs to the high quality aluminum, aluminum wrapped up the inner is aluminum, differences in two kinds of aluminum, so after oxidation "vitiligo" spots.

Customers often won't understand this phenomenon, manufacturer must do more to explain work.

3, aluminum oxidation process operation issues

(1) the workpiece alkali treatment is not complete, local primitive oxide film, clean dirt not;

(2) after alkali corrosion, are not were immediately to the workpiece surface is still alkaline;

(3) the workpiece contact with foreign body in the process.