BUBBLE GUM WELDS can they fixed
#11
Junior Member
JOURNEYMAN
Join Date: Feb 2012
Location: london Ont.
Posts: 25
I know very little about TIG welding.I bought an aftermarket rear sus.for my truck.the truck is on a jig and the rear sus.has been tacked with MIG.The finish welding will be TIG, by a pro. Have i done more harm than good,by tack welding in MIG.
#14
Senior Member
RACING JUNKIE
Join Date: Mar 2008
Location: falkville al
Posts: 1,764
dont have a tig welder here but i gotta hell of a big mig. we have built frames amd everything else you can think of. why is tig now the only way to go when mig was it before. someone with a gun in his hand that knows how to weld can weld a frame up just as good and strong as tig welded.imho...
#15
Re: bad welds
I have done quite a bit of TIG welding so here is my opinion on a couple of things asked here.
I believe the issue would be if the whole thing were MIG welded and then ground down / or not, then TIG welded over because the TIG is such a smaller weld bead that you would not get weld penetration to the base metal only into the weld already there.
I think because moly tubing is so much more prevalent than in the old days. Tig does provide a smaller nicer looking weld in the right hands and MIG is not recommended on moly even though it can be done. It is a little harder to tell the penetration of a MIG weld also.
Curtis
Originally Posted by todd8525
Not sure but i was told u are not suppose to TIG over a MIG weld?Yes /No or is this a myth.
Originally Posted by outlaw256
dont have a tig welder here but i gotta hell of a big mig. we have built frames amd everything else you can think of. why is tig now the only way to go when mig was it before. someone with a gun in his hand that knows how to weld can weld a frame up just as good and strong as tig welded.imho...
Curtis
#18
Originally Posted by TheYellaBrick
I'm assuming he's got a mild steel assembly. 'Aftermarket rear clip'
Curtis
#19
Junior Member
JOURNEYMAN
Join Date: Feb 2012
Location: london Ont.
Posts: 25
i myself fixing the bubble gum-use a mig.I was asking a different question.sorry.Now im not a pro.but decent with a MIG.Watching pros. on TV and such i seem to see them MIG the frames then TIG the cage.I'm a collision repair tech and fix wrecks all day long.But welding a full frame or a cage no.I'll leave that to the pros.I stand behind my repairs.but don't feel comfortable roll testing a cage that i welded.
I'm building a 98 gm regular cab with a 10 foot box dually,twin roots blowers from a 3.8 liter 6.6 duramax.The rear sus is a 4 link bag kit.I'd rather ask guys who do this all the time rather than the smuck at the local donut shop.Thanks again fellas.
I'm building a 98 gm regular cab with a 10 foot box dually,twin roots blowers from a 3.8 liter 6.6 duramax.The rear sus is a 4 link bag kit.I'd rather ask guys who do this all the time rather than the smuck at the local donut shop.Thanks again fellas.
#20
Senior Member
RACING JUNKIE
Join Date: Mar 2008
Location: falkville al
Posts: 1,764
Re: bad welds
Originally Posted by curtisreed
I have done quite a bit of TIG welding so here is my opinion on a couple of things asked here.
I believe the issue would be if the whole thing were MIG welded and then ground down / or not, then TIG welded over because the TIG is such a smaller weld bead that you would not get weld penetration to the base metal only into the weld already there.
I think because moly tubing is so much more prevalent than in the old days. Tig does provide a smaller nicer looking weld in the right hands and MIG is not recommended on moly even though it can be done. It is a little harder to tell the penetration of a MIG weld also.
Curtis
Originally Posted by todd8525
Not sure but i was told u are not suppose to TIG over a MIG weld?Yes /No or is this a myth.
Originally Posted by outlaw256
dont have a tig welder here but i gotta hell of a big mig. we have built frames amd everything else you can think of. why is tig now the only way to go when mig was it before. someone with a gun in his hand that knows how to weld can weld a frame up just as good and strong as tig welded.imho...
Curtis