Electro-polished valve springs?

[Mike Gray]

SS Wannabee,
I worked at a lab that had an electro-polish tank. We used it to for stainless lines for ground support systems on the shuttle. Think of electro-polishing as the opposite of plating, as it removes a very small amount of surface material. (the higher points) The stainless would come out looking like it was chrome plated. I understand the process is usefull in adding strength by eliminating locations where stress risers might form that lead to cracking. (Like polishing rod beams)
The process was done in a tank (can't remember the solution) and an electrical lead was attached to the part and another to a couple of plates. As the current flowed through the part the electro-polishing would take place.

(at least thats the way I remember it from 31yrs ago)
Try Google

[davyjones]

I had a set of used dale earnheart industries springs that looked chrome they were polished so nice . The one race used spring from a restrictor plate cup car outlived a set of k motion springs by 28 passes . Of course they werent the same brand the dei was a Psi spring and the other was a k motion
65 runs from the k motion before I HAD to change them
I got 93 runs on the DEI -PSI polished spring before they HAD to change them .