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#21
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Hot tank does not remove rust.....which is what I want to do.....'splain? I like cheap......but not suitable for this application.. |
#22
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Electrolysis removes rust. Any de-greasing is entirely incidental, it'd be like dunking the part in mildly-soapy water for a day or two. Ideally, the part is completely degreased/cleaned before being de-rusted by electrolysis. He'd put a lead on a sacrificial piece of steel, with the sacrificial metal close to the piece to be de-rusted as possible but NOT TOUCHING. Ideally, a piece of sacrificial sheet-metal, hammered/pounded/formed to sorta-conform to the shape of the piece to be de-rusted. The cleaning works best when the sacrificial metal is close. So the back-side of the part won't be de-rusted. The farther away the sacrificial steel, the less-well the cleaning action. I played around with electrolysis for awhile, even bought a 24-volt battery charger to speed things up compared to a 12-volt charger. The suggested electrolyte was water plus WASHING Soda. (Not "baking soda".) Washing soda was harder to find--had to go to several stores before I found some next to all the laundry detergent. I don't remember which way the battery charger leads are connected. Get it wrong, and you'll have a de-rusted sacrificial metal, and the part you wanted to clean is even worse. I'm thinking this works on iron/steel but NOT aluminum. When it works, it works really well. But getting the sacrificial metal close enough to the area of the part to be de-rusted is tricky. A DC welding power supply at higher voltage still would be better than a battery charger. |
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