Passivating welds with electrolytic cleaning - GIF and video

[Jon]

Passivating welds with electrolytic cleaning.



1:29 source video:

More:

How it Works - Electrolytic Weld Cleaning - Stainless Finishing Solutions
WeldBrush 500 - Weld Cleaning Technology
https://en.wikipedia.org/wiki/Passivation_(chemistry)


Previously:

Cold welding GIF
NASA Technical Publication: Can you weld on Mars?
Welded Celtic knot
Friction welding drill pipe for oil exploration
Friction stir welding - GIF, video, and images
Slow motion linear friction welding of titanium - GIF and video

[Ralphxyz]

Not sure of what exactly I am seeing but then again I am not a welder.

But it sure looks nice.

Ralph

[Frank S]

Ralph the brush made in the cup fits on the tig torch you dip it in a solution then as you brush across the weld you apply current just as if you were going to weld only instead of an arc from the tungsten the current is carried by the liquid in the bristles which creates a very localized plasma spray any deposits left for the burning of the inert gases during the welding process are vaporized leaving clean metal and weld just wipe away the left over liquid.
This really speeds up the clean up process.
I don't know who came up with it but it sure beats having to dip an entire weldement into a vat that does about the same thing.

[Frank S]

The thing I am wondering and hope to someday try if I ever get another tig unit. Is if the same process can be used to efficiently brush off surface rust on larger areas if so it will be a whole new boon for restorations.

[Ralphxyz]

Thank you Frank and the original poster. I had to Google "Passivation" and got a whole new education, WOW!! That is so cool.

One of these days I had hoped to add TIG welding to my skill set and have a TIG welder, now my vision is expanded further.

Ralph

[NortonDommi]

No reason this won't work with an arc welder. Now was that DC? DC- or DC +?

[Frank S]

No reason this won't work with an arc welder. Now was that DC? DC- or DC +?

I was thinking the same thing

[NortonDommi]

I rewatched and brush has 1500 Carbon fibre bristles, that would not be hard to make. Going on the to do list to have a play when I have time.

[Jon]

Passivation gun.

[McDesign]

I freakin love these, and always play with them at the FabTech show, but gosh, they're expensive.

Forrest - with multi-colored SS welds, still . . .