On 2014-07-26, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus14156 fired this volley in
:

I want to know how I can delaminate them in an environmentally
conscious fashion. Thanks

I'm not sure what you mean by "delaminate". What advantage - for scrap
value - would de-laminating the laminations have?

If you want to just salvage the copper separate from the iron cores, do
what we did when we were rebuilding them at Florida Transformer Corp...
just saw off the coils flush with both sides of the core, and pull out
the copper in the openings. Hammer out whatever is fixed into the
openings by varnish.

It's a big job to rebuild one by hand (especially considering the floor
space it requires, since you must hand-pull the new coils through,
instead of bobbin-winding them), but it's only a few minutes work to
extract the old copper from the core.

OK, how do you saw it on a transformer so big.

i

There's no method I know of that will effectively dissolve the vacuum-
potted varnish out from in-between the lams.