Cleaning Copper Coils for Generators

Electrolysis is not the solution to the problems.

I suggest you should consider that at certain high temperature the surface contiminants would flake off or become soft, additionally various industrial cleaners/solvents are available in market to facilitate the final cleaning of the surfaces.

For producing enough heat in copper, connect low voltage electric source (less than 24 volts) to the copper coil terminals, current is determined by application of Ohm's law. That would be somewhat similar to electric welding equipment (transformer with taps or DC generator with series resistance) to a much less intensity than required for welding.

Thanks for the swift reply!!

So electrolysis is not the solution for removing the epoxy resin, but will it work to remove the verdigris (green oxide residue) in the vent holes?

Any advice on any good cleaners/solvents that you have used?

Thanks again!

Keith

Search at www.google.com , web sites such as

www.ecolink.com/sectors/utilities.html would be of interest to you.

Hi,

I would try caustic soda and sodium-hydroxide solutions.

Likely some scrubbing needed.

As the insulating materials are polymerised to withstand high temperatures there will be extended difficulties and cost in removal by solvents.

Nylon: sulfuric acid

Epoxi: none existing to solve, mixture of exotic (and poisonous) solvents to soften, as methyl-chloride, tetra-hydro-furane, dimethyl-formamide, dimethyl-sulfoxide, N-methyl-pyrrolidone.

Polyester: same as above

Polyimide: more difficult than those above

So in total: no way

What about degradation by heat (below the oxidation temperature of coper or below inert gas). This will transform any polymer into a brittle condition, easy to remove if not made to adhere better than before.

What about brittleness induction by cryo-treatment.

In a container with dry-ice or evaporating nitrogen and vibrated?

RHABE

thanks for the feedback, it seems that chemical solutions would be the best solution, either applied with a spray or immersed in a bath. With the option of abrasion afterwards if required

Would you know any companies that can automate these??

Keith

Ultrasonic bath will remove both problems, when used with the proper organic solvents,heat, and time.The cavitation will even remove chrome plating if left too long.

Good luck,

HTRN