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Alkaline anodising of aluminum vs. sulfuric acid anodising?
What is advantage/disadvantage of alkaline anodising over acid anodising? Will Alkaline anodising give the same sealing quality and anodic thickness as sulfuric acid anodising? Which is cheaper? Pl guide.
Ananth NayakAsst. Manager in Anodising plant - Mysore, Karnataka, India
November 4, 2011
Hi Ananth,
You need to be much more specific about your requirements; no one will answer an abstract question about which coating is better than another without having some basic details to go on.
Aerospace - Yeovil, Somerset, UK
November 9, 2011
Dear Sir,
We have some enquires for Alkaline Anodising wherein we believe that surface finish is better than conventional sulfuric Acid Anodising. Also, as per the customer, the Anodising cost will far less than the Acid based Anodising. Can present Acid anodising setup be modified to carry out Alkaline Anodising or is a new set up required with all new rectifiers to carry out the same? Cost-wise is it feasible to go for Alkaline Anodising in the present set up. Pl guide.
- Mysore, Karnataka, India
November 10, 2011
November 11, 2011
Hi,
I strongly suspect that there is a misunderstanding here. In many years of involvement in the anodizing industry, I have never heard of a commercial alkaline anodizing process. Is the specification actually calling for alkaline etching followed by sulfuric acid anodizing? Worth a check?
Harry Parkes
- Birmingham, UK
Dear Harry,
In fact there is commercial Alkaline Anodising process as we came to know from Italtecno. We want to know if it is commercially viable with present set up of Acid Anodising.
- Mysore, Karnataka State, India
November 15, 2011
November 15, 2011
Hi, Arnanth.
I hadn't heard of it either; this is good to know. If you are speaking solely of a proprietary technology, available from no one else, I think only Italtecno can advise you of its viability.
But sorry, we can't publically praise or condemn a proprietary technology here.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Dear Sir,
Thanks for your suggestion
- Mysore, Karnataka, India
November 16, 2011
November 18, 2011
Hi Ananth,
There are a number of alkaline anodising solutions, normally proprietary in nature (such as HAE, Tiodize, Keronite just to mention three).
It really comes down to what properties are important for your application. No-one here is going to say one coating is better than another without knowing what conditions the parts are going to be exposed to.
Do a web search for alkaline anodising solutions and then contact a local supplier for advice. With the potential for new business I am sure they will offer you the support you need.
Aerospace - Yeovil, Somerset, UK
Dear Brian,
Thanks for your suggestions.
- Mysore, Karnataka, India
November 22, 2011
November 23, 2011
Dear,
The alkaline anodize and acid anodize really exist different, because they are different skills, but both of them belong to silver anodize; the alkaline is more expensive than acid anodize, about $90/Ton on processing fee.
Our factory produces this kind profiles for windows and doors; the price is very competitive.
- Hefei, ANHUI, China
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