On Tue, 26 May 2015 06:59:41 -0700, "Gary A. Gorgen"
wrote:

On 05/26/2015 06:33 AM, Spehro Pefhany wrote:

A friend is cleaning brass prior to reloading in an ultrasonic cleaner
using an old formula-

1 qt H20
1 cup vinegar
1 Tsp salt
1 Tsp soap

Seems like a couple of the pans have corroded through on different
brands of unit- destroying the ultrasonic cleaner. The brass should
not be in contact with the pan (there's a stainless basket, or plastic
in the 3rd one he's trying).

Any reason why this would happen? There's not that much difference
between (presumably 400-series) stainless and brass on the
electrochemical series.

Thanks for any leads..


If the brass is touching the bottom of the tank, the tank will
erode. The brass is acting like a 20 KHZ jackhammer.

I used to build ultrasonic cleaners, the 1 KW+ type.
They do have a tendency to self destruct.

Got a RinoLiner in your friends area? Have em give it a quick coating
on the inside.