[bigworm40]

Can someone please tell me what the white substance along the edges of the weld is.

[jeffBrian]

[bigworm40]

A570 GR 50
75/25
Lincoln 71A85 Ultracore FCAW G

[jeffBrian]

Probably just contaminates from the steel being dirty. can you explain what where or when this is happening. a lot of times people over think the problem and it's something really simple to fix. this may be the case here.

[jeffBrian]

are you running correct gas for the wire?

Screenshot_2016-02-25-14-12-19.png (323.13 KiB) Viewed 1158 times

[bigworm40]

Yes 75/25

[jeffBrian]

everything I've seen so far says high argon concentrations work best. the cfh rate is 40 to 50 also which is a higher flow. perhaps trying a higher concentrate of argon gas and check flowrate. other than that I'm still looking a bit. it's interesting because I've worked with guys who worked shipyards in Seward and I bet this wire is used. I wish someone else would stab at this with me.

[jeffBrian]

could you try 85/15? here is just an explanation of the argon mixtures

Screenshot_2016-02-25-14-51-05.png (498.79 KiB) Viewed 1145 times

[Poland308]

Where did the metal come from? Is it steel or some grade of SS ? Is it galvanized or from a corrosive enviroment? I've seen some weird stuff bubble up through or from contaminated metals.

[jeffBrian]

A570 GR 50
75/25
Lincoln 71A85 Ultracore FCAW G

here's his response from earlier

[Poland308]

I was wondering if it was used and maybe permiated with some kind of chemical.

[jeffBrian]

I would get two maybe 3 other pieces of test material and run a bead on each. that should give you a better idea what's going on.
I don't think you specified if it was giving you this with just the one material you posted a pic of or all pieces. if you're wanting to know what's bubbling out of the metal just out of curiosity then I totally missed that. ... and now I feel dumb haha