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No Tank Electrolysis or Anodising?
Hello All,
I decided to watch a YouTube clip Old Soviet motorcycle full Restoration, accessed 17th January 2021 from https://www.youtube.com/watch?v=y8HEZ-x4-_w . The clip showed an electrical treatment that did not involve the usual tanks and immersion I associate with electrolysis rust treatment. Can someone confirm what the type of treatment actually is for me? The treatment appears as follows - with timestamp in brackets [ ] ... [6:00] taking alloy sheet out of AA battery cutting the alloy into small squares. Partially filling a glass jar with Orthophosphoric acid (Phosphoric) [6:24] and putting the alloy squares into the acid. Getting another AA and placing some cloth over the negative end of the AA battery. Getting a 12 volt car battery and hooking an earth lead up to a steel motor cycle rim [6:52). The second lead is hooked to the positive terminal and the other end of the lead is hooked onto the positive end of the cloth covered AA battery. The cloth end of the AA battery is dipped into the glass jar [6:57]. The wet cloth end of the AA battery is then rubbed on the steel motor cycle rim which completes the circuit [7:06}. After treatment the rim is sanded down [7:25] Is there a specific name for this treatment and what is it used for? How good or functional is this process? Kind regards Lionel
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1940 Chevrolet MCP with Holden Built Cab (30 CWT). 1935 REO Speed Wagon. 1963 Series 2A Army Ambulance ARN 112-211 Series III ex-Military Land Rovers x 2 Last edited by Lionelgee; 17-01-21 at 13:21. |
#2
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What a well done video.
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#3
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Quote:
https://www.youtube.com/watch?=G-PtnwtOR24 https://www.youtube.com/watch?v=_Urr8BzgUog https://www.youtube.com/watch?v=iS8Cke3CLC4 On some phosphoric acid based rust remover/converter products I have seen, they have a warning ...May cause hydrogen embrittlement. The old dnepr/ural looks much nicer now. Last edited by Grant McCullough; 10-02-21 at 15:50. |
#4
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Quote:
Thank you for identifying the process used to restore the Soviet motor bike's wheel rims. It is named in the second video as "Brush Plating". I was surprised when the voice over came on the first youTube link and it was a Geoffrey Croker video. I watch Geoffrey's Land Rover Series 3 restoration videos as I have projects of the same ilk. The second video shows a commercially available version of the Soviet home-made process. Thank you also for posting the clip about the phosphoric treatment. Maybe I should of persevered with my Senior Chemistry for longer than a week, before swapping out to another subject! It is good to know what the process is called "Brush Plating"; or as Youtube has informed me, the process is also known as "Wand Plating". I am off to watch some more YouTube clips :0) Kind regards Lionel
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1940 Chevrolet MCP with Holden Built Cab (30 CWT). 1935 REO Speed Wagon. 1963 Series 2A Army Ambulance ARN 112-211 Series III ex-Military Land Rovers x 2 Last edited by Lionelgee; 11-02-21 at 01:35. |
#5
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Quote:
Most self etching primers like Bondaprimer (sold in the UK) contain phosphoric acid as their active ingredient. Almost any acid will dissolve rust but most will leave an unstable surface that readily combines with oxygen causing almost instant rusting. The key is to leave a non reactive, stable surface. David |
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