Talk:Phosphate conversion coating
 | This article is rated C-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | ||||||||||
| |||||||||||
 | The contents of the Parkerizing page were merged into Phosphate conversion coating on 23 April 2022. For the contribution history and old versions of the redirected page, please see its history; for the discussion at that location, see its talk page. |
How to varify the quality of the phosphating. Is there any specific tests are available?
Dubious
editI tagged the sentence about how zinc phosphate is used to prevent rusting, because that makes no sense. Zinc can't rust. It can corrode, and I have a feeling that's what is meant, but I want to confirm. --Wizard191 (talk) 00:24, 29 August 2008 (UTC)
- I believe it should be interpreted as "the zinc phosphate prevents rusting of the steel (the substrate which is treated by zinc phosphating)". Finn Toten (talk) 10:59, 5 December 2008 (UTC)
- Yes. Yaf (talk) 16:01, 5 December 2008 (UTC)
- I am by no means an expert in this field, but the way I understand phosphate conversion coatings is that the material is put in a vat of acid and that converts the surface of the item into a phosphate coating. As such, I understand zinc phosphate as having zinc as the starting material, which can't rust. Wizard191 (talk) 14:22, 5 December 2008 (UTC)
- No. A Zinc phosphate coating is what protects an underlying steel surface. The starting material is steel. Ph is carefully controlled, as well as temperature, for the particular bath that is a combination of zinc phosphate, an assortment of other compounds in small quantities, and an acid solution. Once the temperature of the bath is brought up to the proper range, the steel item to be given rust protection is placed in the vat of heated liquid. Lots of bubbles and outgassing results from the phosphatizing process of the steel (should only be done with lots of ventilation or outdoors). Once the bubbles stop, the process is over, and the steel item is removed and washed down. Once cool, oil is added, to fill the pores in the phosphate coating on the surface, thereby increasing the resistance to rusting, for items that are not going to be painted. Alternatively, paint can also be applied over the phosphate coating to fill the pores, in which case, no oil is used. Yaf (talk) 16:01, 5 December 2008 (UTC)
- But then how is it a "conversion coating"? I thought it converted the surface of the material, not coating it with a substance. Wizard191 (talk) 16:31, 5 December 2008 (UTC)
- No. A Zinc phosphate coating is what protects an underlying steel surface. The starting material is steel. Ph is carefully controlled, as well as temperature, for the particular bath that is a combination of zinc phosphate, an assortment of other compounds in small quantities, and an acid solution. Once the temperature of the bath is brought up to the proper range, the steel item to be given rust protection is placed in the vat of heated liquid. Lots of bubbles and outgassing results from the phosphatizing process of the steel (should only be done with lots of ventilation or outdoors). Once the bubbles stop, the process is over, and the steel item is removed and washed down. Once cool, oil is added, to fill the pores in the phosphate coating on the surface, thereby increasing the resistance to rusting, for items that are not going to be painted. Alternatively, paint can also be applied over the phosphate coating to fill the pores, in which case, no oil is used. Yaf (talk) 16:01, 5 December 2008 (UTC)
the type of oil used and is it toxic
editId like the article to provide some details on the oil coating used.Id like to know if the oil or any other chemicals involved are toxic.
(I bought an item with steel parts that had rust inhibiting chemicals on it and I got ill every time I would touch the metal.) — Preceding unsigned comment added by Gawdsmak (talk • contribs) 07:09, 2 March 2011 (UTC)
External links modified
editHello fellow Wikipedians,
I have just added archive links to one external link on Phosphate conversion coating. Please take a moment to review my edit. If necessary, add {{cbignore}} after the link to keep me from modifying it. Alternatively, you can add {{nobots|deny=InternetArchiveBot}} to keep me off the page altogether. I made the following changes:
- Added archive http://web.archive.org/web/20090228161131/http://www.surfacepretreatment.com:80/default.asp?id=3 to http://www.surfacepretreatment.com/default.asp?id=3
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{Sourcecheck}}).
This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).
- If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
- If you found an error with any archives or the URLs themselves, you can fix them with this tool.
Cheers.—cyberbot IITalk to my owner:Online 07:45, 10 March 2016 (UTC)