Strange porosity

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It's been windy outside so I pulled the trailer tongue into my garage so I wouldn't have shielding gas problems. The first weld went fine. The second weld on the other side had some small porosity which I ground out, then wire brushed it. I thought maybe wind was playing a part so I put a tarp over the area and me and rewelded it. I've never seen such horrific porosity. Obviously I have to grind this out but don't want it to happen again. Maybe the wind swirled under the tarp and did it. Everything is the same as the first side otherwise (stickout, angle, settings) except the first side is on the downwind side. I'd rather not switch over to flux core if there's some other way of solving the problem. Any ideas?

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Reply:it doesnt take hardly any wind to blow away the gas.especially if your around 15cfh. just grind it all out and redoinvertig 221 water cooledhypertherm powermax 30xpfronius transpocket 180fronius transsteel 2200fronius iwave 230i water cooled
Reply:you would be surprised how a little wind sneaks around and plays havoc with your shielding gas. i agree with cornchip

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Reply:With that sort of weldment, why not stick weld it and avoid the shielding gas issue altogether? Sent from my Lincoln Buzzbox using Tapatalk
Reply:Use a little more gas flow, I've had that happen too, you think you got it all ground out but you didn't, then when you go over it the stuff you didn't get out "pops" into the next bead. Might be best to take it off and grind away all of the first pass. Just being funny now, but have cigar and check your wind currents. Works for me at times.


Reply:@52Ford: Good thought although somewhat unpleasant. Pretty simple weld, maybe my stick skills can handle it. That's one of those things you know you need to practice but other stuff gets in the way. I guess 7018 once I grind out the porosity?
Reply:

Originally Posted by 12V71

Use a little more gas flow, I've had that happen too, you think you got it all ground out but you didn't, then when you go over it the stuff you didn't get out "pops" into the next bead. Might be best to take it off and grind away all of the first pass. Just being funny now, but have cigar and check your wind currents. Works for me at times.


Reply:

Originally Posted by JD1

Cutting it off would be a bear without a plasma cutter. .
Reply:Was you welder under the tarp too. Where was the fan aimed?  I know if i am near the floor in my shop there can be a strong flow of air.
Reply:things started going terribly wrong right away but you kept going for some reason. just grind it out. 5min job at mostinvertig 221 water cooledhypertherm powermax 30xpfronius transpocket 180fronius transsteel 2200fronius iwave 230i water cooled
Reply:

Originally Posted by JD1

@52Ford: Good thought although somewhat unpleasant. Pretty simple weld, maybe my stick skills can handle it. That's one of those things you know you need to practice but other stuff gets in the way. I guess 7018 once I grind out the porosity?
Reply:

Originally Posted by 52 Ford

I was burning 7018s earlier. Honestly forgot how easy of a rod it is. I rarely use it.I use a file or a piece of concrete block to knock the ball off of the end of the 7018.
Reply:This thread has this fairly new welder pondering this:   Looking at the pics, I see similar to what I’ve experienced with about 3 rods over the last year.  I did not think about it at the time, but it was a very breezy day when I welded and that happened with both 6011 and 7018.  I was outside, so now I’m thinking I should have put up some type of barrier to shield me from the wind?   Is that a correct assumption?All these nuances…seems like one perhaps has to make one’s share of mistakes…..mandatory to understand all those nuances and scenarios?Miller Multimatic 215Spoolmatic 150 spool gun, Miller TIG kitPrimeweld Cut 60 Plasma CutterVevor Pipe StandsBauer Portaband/Swag tableGrinders-Milwaukee, Porter Cable, DewaltArcUnion M-20 portable rod oven
Reply:

Originally Posted by RCWelds

This thread has this fairly new welder pondering this:   Looking at the pics, I see similar to what I’ve experienced with about 3 rods over the last year.  I did not think about it at the time, but it was a very breezy day when I welded and that happened with both 6011 and 7018.  I was outside, so now I’m thinking I should have put up some type of barrier to shield me from the wind?   Is that a correct assumption?All these nuances…seems like one perhaps has to make one’s share of mistakes…..mandatory to understand all those nuances and scenarios?
Reply:

Originally Posted by Louie1961

No, stick rods shouldn't need any protection from the wind.
Reply:UPDATE:I pulled the trailer tongue further into the garage and ground out all the porosity. Then I took some scrap and welded stringers on it right beside the chain bracket to see what would happen. While I was snipping off a tip ball, I happened to notice that there was some kind of clog in the nozzle. Cleaned it out, turned the gas up to 17 and welded again. Came out pretty good except for a few small surface porosity bits. I think I'll let them go...unless my perfectionism rears up. The problem was a clogged tip + a breeze sneaking into the garage. The tip must have clogged after the other bracket got welded on.Went with MIG just because of the comfort factor but I do need to get back to practicing stick. 52 Ford mentiponed the bracket is rated for 12,000 lbs. However this trailer has a 3,500 lb axle rating so that is way under.