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Temperature of part during anodizing
Quickstart:
While components are being anodized
⇦ huh? they are immersed an an acid and water solution which is at room temperature or below; it is not a hot process. Still the large amount of electricity applied to them generates substantial heat, which is limited by contact with the solution. Air agitation
⇦ huh? keeps the solution moving, so fresh cool solution is in contact with the parts.
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Q. The owner of my company posed an interesting question to me the other day. He asked me what the temperature was on an aluminum part reached, while the part was being sulfuric acid anodized. I couldn't find any answers on that. Is anyone aware of any research being done on this? I'm primarily interested in hardcoat. I would assume it would be hotter than the bath.
Marc Green
anodizer - Boise, Idaho
2000
A. Hi Marc!
According to www.alu-info.dk ⇩ the surface temperature is dependent on the amount of air you are pumping through your anodizing tank. If the bath temperature is 20 °C without air agitation, then the surface temperature is about 27 °C. If you are pumping through 1 m3 air then the temperature is only 22 °C. 8 m3 air results in a temperature of 21 °C.
Unfortunately I don't have any info regarding hardcoat. Hopefully this helped you.
- Sweden
Ed. note: Unfortunately that domain name has been bought & sold many times since the year 2000 and no longer has anything to do with this posting. Do not follow expired links -- scammers often buy them to get links to their malware from legitimate sites.
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