It helps on a downhand if you also put a little weave in the weld, it penetrates just a little better
specialcab August 31, 2008
3:48 pm
was always tought the ‘christmas tree’ technique. like a triangle. and the guy hu sed that mig is onli downhill is a spounge, infact downhill isthe weakest weld u can put down with a mig as it doesnt penatrate it very well it just folds on top of itself. where as uphill penatrates.
seeeeaaaaaan August 31, 2008
3:48 pm
hes got the Technique but that weld sucks its uneven and not constant at all but thats my take but really not to bad
johnpaulsz28 August 31, 2008
3:48 pm
pull the trigger queer
rockyriverman August 31, 2008
3:48 pm
Not true. If you are talking about really thick material, then I agree with you %100. If you are talking about something 1/2 to 5/8 inch thick, then I disagree. I have welded 1/2 inch mild steel vertical down for almost 14 years and they are solid welds. You just have to angle your gun up slightly and control the puddle as your move the mig gun down. You are right that vertical up is a much better weld, but it isn’t always necessary. Especially when you are doing production welding like I am.
bloy1 August 31, 2008
3:48 pm
hmm, you should always weld downhill with the MIG/MAG, thats what ive been taught anyway, uphill with the arc and TIG.
weldersweetlover August 31, 2008
3:48 pm
no good welding this one… i tell you…but anaways we have different technique
AlanMorningstar August 31, 2008
3:48 pm
Beautiful!!!!
6psycho9 August 31, 2008
3:48 pm
hmm what i do is do circles .. but inward circles i dunno how to explain.. and then the cap i would go side to side mines comes out real smooth
orangeslices430 August 31, 2008
3:48 pm
Triangle method is much more effective on uphill short circuit than an upside down “v”. If you do triangle a root pass is not required.
Tarantino880 August 31, 2008
3:48 pm
At my work we cant even oscillate when welding uphill,the standards are to high from siemens =/ but the best setting for vertical welding with mig is,, (7.3 m/s and 25.5U depends on welding maschine) works great with kempi or Essab machines.. =)
ahset August 31, 2008
3:48 pm
that’s impressive though I was always taught that it is better to run a bit hot than cold since lack of fusion is very important,especially on the root pass. Even with no flux, you are essentially burying “colder” welds when you weld downhill. I’m guessing your root passes were not very wide because I know fluxcore tends to run much hotter than standard GMAW. OP, show some overheads now.
tresmass August 31, 2008
3:48 pm
downhill welding is not accepted in canada due to poor penetration if you do weld downhill you’ll notice that the puddle wont stay with you for very long it’ll only run over your butt joint corner joint or whatever and most likely fall off. to do the job correctly learn to weld vertically once you get it you can’t forget it the trick is simple adjust your machine to proper speed according to voltage or if you prefer amperage then take your time vertical welds are much slower then any other weld.
vesselwelder August 31, 2008
3:48 pm
true but with mig where you dont have any flux to bury, you can run it downhill. i run root passes on pressure vessels and have only busted x ray once in 5 years. of course you have to go over it with a wire wheel and clean it real good before you weld over it. but usually root passes are all we use mig for. all of our uphill welding is done with fluxcore.
ahset August 31, 2008
3:48 pm
that’s strange since I was taught to never weld downhill. Military contractors in my state actually get fired for welding downhill. They work on submarines. Welding downhill washes and buries flux and other garbage. I’ve ran downhill only once but passed all of my AWS tests in the vertical position welding uphill.
vesselwelder August 31, 2008
3:48 pm
you usually want to run a nice downhiil pass before you go back uphill for two reasons just running an uphill pass like that can apply too much heat to your base metal and a downhiil pass about a quarter inch wide will help lock it in. two it gives your uphill something to stand on and eliminate gas pockets and porosity for x-ray
BashYy18 August 31, 2008
3:48 pm
stay in skl ok m8 haha just about to do my last year of college and will end up with a deplomer for welding and fabrication ..
we allso have a part time teacher that is going to the finals of the skills olympics in canada
weldingtipsandtricks August 31, 2008
3:48 pm
what does lool mean? Stay in school.
BashYy18 August 31, 2008
3:48 pm
man its a good thing im at college lool that was poor
lexichronicle August 31, 2008
3:48 pm
don’t know what the complaints are about, uphill is a pain in the ass, and i suspect some of you leaving negatives haven’t actually tried it. try it and see how pretty yours look. maybe it could be better, but compared to how most DIY uphills will look it’s fine. when i was welding i’d flip the objects over and run the weld down for ease (provided you can flip the object over…
wildhyo August 31, 2008
3:48 pm
well, your technique is right but it looks little undercut on your lift side, I think you can make better when you slow down little bit more on the sides, your speed is like doing down hill.
fathinking August 31, 2008
3:48 pm
Sorry to say but the quality sucks…
Bad structure youre wire is massive You should make a triangle
so you get enof materials On the inside so you dont lose On the outside So the weld becomes 100% the structure will be perfect the long you stay on the sides and count to 2 once you are on the sides So it will burn perfectly in Good luck I hope the next welds look beter
gnrfreak1015 August 31, 2008
3:48 pm
i was always taught to use an upside-down C on vertical up also, but i’ll see how this works out for me. good video.
Wheat001 August 31, 2008
3:48 pm
well try the technique upside down v. Did vertical up today with results were sat, but not as nice as yours…thanks..
ozystud August 31, 2008
3:48 pm
i usually use a upside down C on vertical ups, it usually turns out pretty neat
Delgado April 29, 2009
9:55 am
Your technique looks ok, and as has been said, you could probably do with making the pauses a little longer…. Personally, if I were welding 6mm+ mild steel plate with MAG/GMAW, I would run the root downhill and then the next pass/es uphill. With the downhill root pass I would go fast, keeping the arc close to the front edge of the weld bead, using a trailing angle (pointing upwards) of about 30 degrees, as short a “stick-out” as possible, and always keeping the arc right in the centre of the join. For the uphill pass I use the upside down “c” method, although I’ve seen some good welds with the other 2 previously mentioned methods, and also the “on its side figure of 8″ weave too. I think if you put the root in first, then the weave pattern is really just a matter of personal choice (as long as you hold the pauses for the right amount of time). I’ve had my welds macro etched, x rayed and destructive tested using this method, and have never had any problems with lack of fusion. Sure, it takes some practice to get it right (in fact, I would say that a good downhill root is one of the hardest welds to perfect), but here in Europe it is accepted as sound welding, in fact, to get the code (EN287/2) you need to be able to do the vertical test piece in this way. I also agree with Vesselwelder’s comments about heat, gas inclusion etc….
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It helps on a downhand if you also put a little weave in the weld, it penetrates just a little better
was always tought the ‘christmas tree’ technique. like a triangle. and the guy hu sed that mig is onli downhill is a spounge, infact downhill isthe weakest weld u can put down with a mig as it doesnt penatrate it very well it just folds on top of itself. where as uphill penatrates.
hes got the Technique but that weld sucks its uneven and not constant at all but thats my take but really not to bad
pull the trigger queer
Not true. If you are talking about really thick material, then I agree with you %100. If you are talking about something 1/2 to 5/8 inch thick, then I disagree. I have welded 1/2 inch mild steel vertical down for almost 14 years and they are solid welds. You just have to angle your gun up slightly and control the puddle as your move the mig gun down. You are right that vertical up is a much better weld, but it isn’t always necessary. Especially when you are doing production welding like I am.
hmm, you should always weld downhill with the MIG/MAG, thats what ive been taught anyway, uphill with the arc and TIG.
no good welding this one… i tell you…but anaways we have different technique
Beautiful!!!!
hmm what i do is do circles .. but inward circles i dunno how to explain.. and then the cap i would go side to side mines comes out real smooth
Triangle method is much more effective on uphill short circuit than an upside down “v”. If you do triangle a root pass is not required.
At my work we cant even oscillate when welding uphill,the standards are to high from siemens =/ but the best setting for vertical welding with mig is,, (7.3 m/s and 25.5U depends on welding maschine) works great with kempi or Essab machines.. =)
that’s impressive though I was always taught that it is better to run a bit hot than cold since lack of fusion is very important,especially on the root pass. Even with no flux, you are essentially burying “colder” welds when you weld downhill. I’m guessing your root passes were not very wide because I know fluxcore tends to run much hotter than standard GMAW. OP, show some overheads now.
downhill welding is not accepted in canada due to poor penetration if you do weld downhill you’ll notice that the puddle wont stay with you for very long it’ll only run over your butt joint corner joint or whatever and most likely fall off. to do the job correctly learn to weld vertically once you get it you can’t forget it the trick is simple adjust your machine to proper speed according to voltage or if you prefer amperage then take your time vertical welds are much slower then any other weld.
true but with mig where you dont have any flux to bury, you can run it downhill. i run root passes on pressure vessels and have only busted x ray once in 5 years. of course you have to go over it with a wire wheel and clean it real good before you weld over it. but usually root passes are all we use mig for. all of our uphill welding is done with fluxcore.
that’s strange since I was taught to never weld downhill. Military contractors in my state actually get fired for welding downhill. They work on submarines. Welding downhill washes and buries flux and other garbage. I’ve ran downhill only once but passed all of my AWS tests in the vertical position welding uphill.
you usually want to run a nice downhiil pass before you go back uphill for two reasons just running an uphill pass like that can apply too much heat to your base metal and a downhiil pass about a quarter inch wide will help lock it in. two it gives your uphill something to stand on and eliminate gas pockets and porosity for x-ray
stay in skl ok m8 haha just about to do my last year of college and will end up with a deplomer for welding and fabrication ..
we allso have a part time teacher that is going to the finals of the skills olympics in canada
what does lool mean? Stay in school.
man its a good thing im at college lool that was poor
don’t know what the complaints are about, uphill is a pain in the ass, and i suspect some of you leaving negatives haven’t actually tried it. try it and see how pretty yours look. maybe it could be better, but compared to how most DIY uphills will look it’s fine. when i was welding i’d flip the objects over and run the weld down for ease (provided you can flip the object over…
well, your technique is right but it looks little undercut on your lift side, I think you can make better when you slow down little bit more on the sides, your speed is like doing down hill.
Sorry to say but the quality sucks…
Bad structure youre wire is massive You should make a triangle
so you get enof materials On the inside so you dont lose On the outside So the weld becomes 100% the structure will be perfect the long you stay on the sides and count to 2 once you are on the sides So it will burn perfectly in Good luck I hope the next welds look beter
i was always taught to use an upside-down C on vertical up also, but i’ll see how this works out for me. good video.
well try the technique upside down v. Did vertical up today with results were sat, but not as nice as yours…thanks..
i usually use a upside down C on vertical ups, it usually turns out pretty neat
Your technique looks ok, and as has been said, you could probably do with making the pauses a little longer…. Personally, if I were welding 6mm+ mild steel plate with MAG/GMAW, I would run the root downhill and then the next pass/es uphill. With the downhill root pass I would go fast, keeping the arc close to the front edge of the weld bead, using a trailing angle (pointing upwards) of about 30 degrees, as short a “stick-out” as possible, and always keeping the arc right in the centre of the join. For the uphill pass I use the upside down “c” method, although I’ve seen some good welds with the other 2 previously mentioned methods, and also the “on its side figure of 8″ weave too. I think if you put the root in first, then the weave pattern is really just a matter of personal choice (as long as you hold the pauses for the right amount of time). I’ve had my welds macro etched, x rayed and destructive tested using this method, and have never had any problems with lack of fusion. Sure, it takes some practice to get it right (in fact, I would say that a good downhill root is one of the hardest welds to perfect), but here in Europe it is accepted as sound welding, in fact, to get the code (EN287/2) you need to be able to do the vertical test piece in this way. I also agree with Vesselwelder’s comments about heat, gas inclusion etc….