knots Posted October 30, 2010 Share Posted October 30, 2010 A while back I had a conversation with a water system engineer . While talking about corrosion he asked me what blacksmiths use to treat/kill corrosion. My standard response was phosphoric acid. He said that for water supply systems citric acid is used exclusively. This makes sense for the food or water supply infrastructure. But what about other day to day applications in a black smith shop ? Any body ever try citric acid for rust treatment ? I walked into a paint store the other day and requested citric acid based rust treatment. They never heard of it. Quote Link to comment Share on other sites More sharing options...
pkrankow Posted October 30, 2010 Share Posted October 30, 2010 It is used to clean and passify stainless steel. Phil Quote Link to comment Share on other sites More sharing options...
Tran Posted October 30, 2010 Share Posted October 30, 2010 Try this address, it has a great deal of information about citric acid as a rust remover. www.tttg.org.au/Content/Citric%20Acid%20Rust%20Removal%20Brochure%204.doc. You can buy it at grocery stores. Quote Link to comment Share on other sites More sharing options...
dagr8tim Posted October 31, 2010 Share Posted October 31, 2010 I prefer electrolysis for rust removal. Quote Link to comment Share on other sites More sharing options...
knots Posted November 1, 2010 Author Share Posted November 1, 2010 I prefer electrolysis for rust removal. Hmmm. I have a couple of old battery drill chargers . Wonder if one would work as a DC power supply for electrolytic rust removal. Quote Link to comment Share on other sites More sharing options...
dagr8tim Posted November 1, 2010 Share Posted November 1, 2010 Hmmm. I have a couple of old battery drill chargers . Wonder if one would work as a DC power supply for electrolytic rust removal. I typically use wall warts with the transformers on the plug. Normally I work with under an amp because I'm doing small things. You'll want to increase the amperage as you get into bigger parts. Quote Link to comment Share on other sites More sharing options...
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