Etching welds.

[Shield Arc]

I have never done this before. When doing the testing of Roadhunter's new Everlast 120-volt Mig welder over on Welding Web. I was ask to do some etch testing. This was quite a learning experience for me:laughing:. I first tried naval jelly, then battery acid. The results were less than stellar!:thumbdown: So I ordered some phosphoric acid off ebay. It arrived yesterday. I cleaned up the fillet welds done by the Everlast 120-volt Mig run at max settings on 3/8-inch thick flatbar . And the one I did with my V350-Pro run at 29-volts, 224-amps.

First two pictures are the Everlast welds. First one is with the acid still on it. The second picture is with the acid wiped off. Not sure you can see it in this picture, the weld didn't even bite into the corner of the two plates:shocked:. Third picture is the weld made with the Lincoln V350-Pro,

 

[KubotainNH]

Can you explain how this sort of thing is read? Do you look at the color difference where the last picture looks like a pie shaped penetration?

BTW, welcome back to TBN.

 

[Shield Arc]

Can you explain how this sort of thing is read? Do you look at the color difference where the last picture looks like a pie shaped penetration?

BTW, welcome back to TBN.

Yes that's how you read it. The V350-Pro really dug in. The Everlast 120-volt Mig didn't penetrate at all.:shocked:


Thank you!

 

[k0ua]

As the old race drivers will tell you.."there is no substitute for cubic inches"... Maybe there is no substitute for amps?

 

[RedNeckRacin]

That's cool as ****. I always wondered how well 120 welders actually did!

 

[yomax4]

Well done. Will you now do 1/4 and then 1/8 and see what the 115v units are good for? Acid test is very cool.

 

[Shield Arc]

Well done. Will you now do 1/4 and then 1/8 and see what the 115v units are good for? Acid test is very cool.

I would love to, but Roadhunter demanded I ship his welder to him. As much as I tried to talk him into letting me keep it, he wouldn't hear of it! Kind of one way, don't you think? :laughing:

 

[Shield Arc]

I did the same test with 6010, and 7018. These were etched with battery acid.:thumbdown:
Fist picture is 1/8" 6010.
Second picture is 1/8" 7018.

 

[boomer1025]

I did the same test with 6010, and 7018. These were etched with battery acid.:thumbdown:
Fist picture is 1/8" 6010.
Second picture is 1/8" 7018.

.
Looks like you glued them together with a bead of epoxy

 

[Shield Arc]

.
Looks like you glued them together with a bead of epoxy

The 6010 weld is dug in pretty good. I ran that with my Everlast PowerArc 300.