Re: OT Welding Question

Posted by trucker40 on June 11, 2009 at 19:23:13 from (69.155.105.170):

In Reply to: OT Welding Question posted by super99 on June 11, 2009 at 16:59:36:

You ought to grind that until its shiny before you start.Then I would use 6011 uphill.If you dont know how try and watch somebody and have them point out how.Its not as hard as you think but a little harder than welding flat.You have to watch the puddle not the slag.6011 burns fast so it doesnt take very long to run a pass uphill with it.Every welder is a little different so between 90 to 110 amps should work.You dont want or need it real hot to weld uphill.Not as hot as flat because you will be in one place longer and pushing the metal up,the slag falls out of the weld,a little cooler than flat keeps the weld covered with slag and a stronger weld.After you get a pass on it with 6011,chip,grind,whatever it takes to get every bit of slag off of your weld.Fix anyplace you dont like and get the slag off of it.Then use 7018 AC or maybe 7014 if you can weld uphill with it.Start at the bottom and weld a stringer up on one side of the 6011 pass or weave a wide pass that covers the 6011 pass.I prefer to weave it up so you push the weld up on one side of the 6011 pass cross the 6011 pass kind of fast,burn in and up on the other side,back across kind of fast,burn in and up on the other side so actually even though you are weaving,you are making 2 uphill passes side by side,but covering the middle between the 2 passes.By going fast across the middle it leaves half as much weld as on the side,but when you cross it twice it evens out your weld.When you get done it looks like a stack of quarters or something and is about as strong of a weld as you can get.On 7018 you watch the puddle not the slag,just forget about the slag,and move it fast enough that there is a line behind the puddle which is where the slag is.If you go so slow you are getting your weld puddle behind that line you are welding through the slag causing your weld to be porous.If you weld a weld thats porous and bubbles up,grind it out and do it again because that weld is not strong at all.Your 7018 weld will look rough before you chip it,but if you do it right it will look like a stack of coins once you chip it.Practice on something first.Downhill weld is alright for some things,I dont think that is one of them.

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