Environmental Ash Removal Method For Die Casting Aluminum

For the ash removal of die-casting aluminum, I believe many manufacturers are worried because it is often difficult to operate, or it is not environmentally friendly, or even has great pollution, which is related to its specific composition. How should we operate to remove ash from die cast aluminum in an environmentally friendly manner?

Due to the high silicon content of die-casting aluminum alloy, the usual ash remover is not suitable. Moreover, many of the currently used ash removers for die-casting aluminum alloy contain hydrofluoric acid and other components, which have high requirements on operating equipment and protection, and complex wastewater treatment. Therefore, many manufacturers are developing more environmentally friendly die-casting aluminum ash remover, which can effectively remove the stains on the surface of die-casting aluminum workpieces and the black ash generated after chemical polishing and alkali corrosion, and produce a clean and bright surface, which has a strong ash removal and whitening effect on die-casting aluminum.

Let's take a look at the traditional die casting aluminum ash removal!

The alkali corrosion of die-casting aluminum will cause black ash. If you want to wash white, the traditional method is nitric acid + hydrofluoric acid at the ratio of 3:1. However, this process has high risk factor and large pollution, and is being phased out.

Benshan casting aluminum white ash remover does not contain hydrofluoric acid, and the reaction is mild in the process of casting aluminum ash removal, without harmful smoke volatilization, and the formula is environmental friendly. It has a good corrosion inhibition effect on aluminum alloys with high silicon content, and has little change on the size of precision castings. It is a very environmentally friendly ash removal process after alkali washing and chemical polishing of cast aluminum alloys.

Therefore, in the ash removal process of die-casting aluminum, many manufacturers gradually choose this kind of light acid ash removal method. After all, the traditional ash removal of die-casting aluminum is not only harmful to itself, but also not environmentally friendly, and the country and society are very excluded.