The cheapest method of chrome plating
https://youtu.be/88LxOE98ZSw
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The cheapest method of chrome plating
https://youtu.be/88LxOE98ZSw
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Just a quick question: What metal is the spoon made from other than being non magnetic?
stainless steel
where does the chrome come from?
As part of a stainless steel
Now I'm confused. You're suggesting that two identical metals are used connected to opposite terminals of a 5 volt DC output and screened with a piece of plastic. I've done a fair amount of plating but you're explanation of stainless steel for both the spoon and the metal strip just doesn't seem to make sense - but I am willing to hear the an explanation. That being the case, why not use two pieces of the stainless sheet
Thanks
I did not have two spoons that are not magnets, it is poacure that it does not have a value to obtain a solution.
Been researching this a little today as college chem classes were more than 40 years ago. It seems I have forgotten a lot.
Anyway, putting stainless at the anode (+) will cause chrome to leach out of the stainless steel. It seems you need a Ph down around 1 and it can form as trivalent or hexavalent. The first being harmless and the second being a really nasty poison. Once in solution though, you can reverse the process and deposit it back onto the cathode (-) although I don't quite understand which version is being deposited. It seems a lot depends on the electrolytic solution and the base metals.
I do remember a lot of shops that did chrome plating were put out of business when they tightened up the regulations
So if the chrome is leached from the Positive anode then one has to assume that deposition is occurring at the negative cathode. I would think that the parts needing plating would be attached and not another piece of stainless. A better explanation is clearly needed.Quote:
Originally Posted by piper184
Yeah, I would like to see the reactions written out for each stage, maybe then I could understand it.
Thinking about how electrolysis for rust removal works, the rusty piece is put on the negative wire and the rust is reduced and the ions transported to the positive side. But that usually has a base for the electrolyte not an acid.
In this case, maybe the stainless bar in the first reaction was sending chrome to the spoon, then in the next reaction it was reversed to plate the target. I may have to dig out an old textbook and do some studying again. :confused:
The stainless strip is not involved in the dissolution. From the spoon we get 3-valent chrom.
This might not be chrome, this might be nickel plating instead. Using nickel on both anode and cathode in a vinegar salt solution will force the nickel to move through the solution, where some of it will be converted to nickel acetate in the solution. The actual plating of the parts is fast because it uses the nickel in the solution instead of needing another nickle source, but it is good to use nickle electrodes to avoid contaminating the solution and either killing it or having weird colours appear in the plating. Higher voltages are ok for forming the solution faster, lower voltages in the plating process makes for a smoother plating job.
Nickel is a decent plating material even though it is not as hard as chrome and can be worn off over time.
Nickel has a yellow shade and electrolyte of green
Stainless can have a lot of nickel in it. Nonmagnetic stainless is usually about 9% nickel.
If we take into account the color of the electrolyte, it is chrome, since without using the heating of the liquid, the coating does not stick to the metal.
OK, but this process also works for nickel, right?
Nickel can be applied without heating.
So nickel would actually be better because you do not have to heat it.