Blend of additives & oxidizer for sulfuric acid, performs deoxidizing and neutralizing.
Eco-friendly formulation free of heavy metals. Free of nitrates and fluorides. Contains EDTA but does not attack base – can be used prior to anodizing without rinsing – no additional sulfate from rinse goes to waste treatment.
Features & Benefits
- No need for extra rinsing prior to Anodizing, shorter process time
- No contamination to the system
- Anodizing Bath Can be recycled in this bath as replenishment; Good for Waste Water Treatment
This process belongs toALUMAL DEOX series
Aluminum has a natural protective oxide surface film and affinity for oxygen, in order to improve the appearance of an aluminum part or component through conversion coating, painting, anodizing or plating processes, requires some additional surface treatment processing to remove the natural oxide layer.
Once aluminum and alloys are exposed to etching solutions, the oxides are often removed but then depending on the alloy of aluminum, there are surface adherent non-reactive reaction products referred to as “smuts” on their surfaces. Desmut formulations are required to remove these from the surfaces of aluminum parts or components. The types of smuts present are related to the alloy of aluminum. For example, 200 series wrought aluminum have resulting copper smuts that are effectively removed by iron based desmut formulations. Alloys containing silicon or magnesium smuts are thoroughly desmutted with blends of acids including fluorides, nitrates & sulphates. All surface smuts must be removed for success with applications of conversion coatings, painting, anodizing or plating aluminum and alloys.
Choices for Anodizing applications include ALUMAL DEOX 411, 436 or 444.
For chemical conversion coating prior to painting, review ALUMAL DEOX 411, 425, 445, or 427.
Coventya offers many additional types of ALUMAL products to effectively deoxidize and desmut all types of cast and wrought alloys of Aluminum. This is just a partial list of what is available; contact your local COVENTYA representative for review of other available technologies.