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:
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Parts are cleaned and degreased to remove any contaminant
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Parts are then rinsed to eliminate any residue of detergent
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Conversion coating is then applied by immersing the aluminum parts in the tank. The chromate conversion coating gets applied immediately
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Parts are then rinsed again
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