To begin with, the pH worth of frequent reducing liquids available on the market is generally in the range of 8.5 to 9.5, and a number of them could be much more alkaline. If slicing fluids having a higher PH value are often used when digesting aluminum alloys, custom aluminum parts，it will lead to blackening of the workpiece, rough surface area and also device breakage.

So how to find a h2o-dependent reducing liquid suitable for light weight aluminum alloy handling?

Firstly, the reducing water for processing aluminum alloys must satisfy the following circumstances: it does not have sulfur, chlorine and nitrite, along with its PH worth is managed between 8. and 8.5. When picking aluminum alloy decreasing substance, it is best to purchase it from your manufacturer, check with the lubricant dealer for the example and try it prior to deciding if they should use it.

like：

How to prevent bending deformation of lightweight aluminum alloy pieces right after digesting?

How to avoid mildew on aluminum alloy parts?