Chromate conversion coating services
Chromate conversion coating, more commonly known as chem film or by its brand name Alodine, is a type of conversion coating, used on aluminum as a corrosion inhibitor, as a primer for paint due to increased adherence or to preserve electrical conductivity.
|Surface preparation||Colors||Applicable materials||Cosmetic availability||Visual appearance|
|As machined (Ra 3.2μm / Ra 126μin)||Clear||Aluminum||No||Machining marks are visible|
Example of a chromate conversion coated part
The Hubs chromate conversion coating process
Chromate conversion coating is a chemical coating that protects aluminum from corrosion, serves as a primer for painting and preserves electrical conductivity. At Hubs, we only use chromium-free, RoHS compliant clear chromate conversion coating.
Here’s how Hubs operators apply chromate conversion coating:
Parts are cleaned and degreased to remove any contaminant
Parts are then rinsed to eliminate any residue of detergent
Conversion coating is then applied by immersing the aluminum parts in the tank. The chromate conversion coating gets applied immediately
Parts are then rinsed again
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