Hello everyone and welcome to the extreme TIG Channel for today's video uh I'm gonna show you
one of the most demanding uh field welds I ever did so far in my welding career as you can see we
got a 6G facing down uh it's a six-inch sch. 40 uh cap that's a gas line so it's 100 x-ray
uh there's a lot of challenges uh involved to perform this type of welding uh
I put three tacks uh three six and a nine o'clock
probably I'm gonna start from the top going uh downhill to that tack and down from the
six o'clock up to that uh three o'clock as I said there's a lot of challenges involved
this type of welding, is one of the extreme welds I did so far in my welding career
as you can see there's not much room those two pipes are really close together
you can't fit your hard hat or helmet so there's no no room there's a cable tray above your head
so I can't go this way as well so there's a lot of
lots of challenges as I said we have to do downhill we have to use both hands we're gonna do
back feed, lay wire, dipping technique everything possible the most important thing is uh
you have to do really calculate how you're gonna start welding that's why I didn't put
an tack on the top So the plan is uh start to have a good start so I don't have to use any grinder
as I don't want that so if something happened on the top, you'll have grape or something okay
it's cut out there's no room to fit any grinder so as I said we're going to start at 12
o'clock doing downhill to that tack I'm gonna feather out the tacks and then after I'm gonna
started from the bottom up I was even thinking looking through that Gap
and start doing like a back feed but uh but that's not gonna happen
you gotta do as I said you got to use all your Arsenal you got of your skills uh
the tig wire I'm using is the ER80S- B2 it's uh tig rod for high-temperature applications
as I'm working in a power plant and as I said this is a gas line so everything is 100 x-rayed
so for this part I will partially do a back feed from the top down and uh
you have to change you have to adapt to any situation because uh there's no consistent
technique that you can use as you have to do this as I said you have to use both hands
and you have to switch from one technique to another
especially now this part is the most critical you
don't want to have any paddle to sag down or have any grapes
I'm just going I'm using a 1 /8 rod 1/8 tungsten same thing with the amperage
there is no consistent amperage you can use for entire joint you have to
switch it as you can see the root from the top looks perfect that's how it should
and uh so we know I don't have to use grinder at all I'm just going to use grinder where I can for
a stop starts and feather up those tacks now I'm going down from the bottom up to 10 o'clock
as I'm a right hand so I can decide I got a I got a lot of space
just gonna as I said uh you got to use all your techniques all you got
you can do back feed on certain parts of uh of a root and then you have to switch to deep and then
you have to switch to lay wire technique is on one point on both sides you got
a position that you actually have to weld over your hand so if you're right hand you're gonna
cross your left hand and uh you're just gonna block your vision you're not gonna see what
you're doing as you don't see uh what's going on the top anyway so for this part here uh
the reason why I welded this side I left this tack I want to maintain the same Gap
I don't wanna start welding on one side and then the entire other side as it might
close the gap on me I don't want to do that and I have to use a grinder and that's the thing I want
to avoid so now I'm gonna finish I feather that tack I'm just gonna run over it as I'm going
downhill and I'm just going to connect to that bottom part bottom section of the root I did
as you can see I'm using a dipping technique I'm just dabbing it in the puddle
when you're going downhill you want to have a little bit higher amperage
I think I'm around 120 right now
as I said there's no consistent amperage you have to change it all the way
okay this is the root I did uh with the downhill and partially uphill as this is a
closure weld so the MT has to be done after root pass you can see that red powder powder
so they said MT root okay
now we're gonna do a hot pass and fill to Flash I'm going to start that top section uh
downhill and then from the bottom up to three o'clock so for this section I'm gonna go down
and for the bottom I'm gonna go up uphill
as I said you have to use uh All Your Arsenal on this uh on this weld
it's really demanding really challenging uh it's really extreme it's perfect fit for my
YouTube channel it's extreme tig and this is the type of joint actually I've been looking for
so this is the field weld guys you never know what you're gonna get
and what to expect that's why practice practice as much as you can all positions always whenever
even if you're in a shop try to do freehand try to do in positions some welds
because if you end up one day in a field you're not gonna you're not gonna have any surprises
for this type of joints if you got 8 out of 10 skills uh you might not gonna finish that joint
okay we did fill to flush tis side I was actually walking the
cup all the way up to three o'clock all the way up to 10 o'clock on this side
and uh from the top part I also did downhill fill to flush now I'm going to start with
a cap it's going to be a two two pass cap so for the first pass, I'm gonna go on a pipe side
and is there any reason yes there is uh there's a reason why I'm going on
on the pipe side with the first pass uh is the second pass is a crucial I wanna cover fitting
so for the second pass, I want to be on a cap side as uh as I said it's 100 x-rays I don't want to
have any indication on that shot so I just want to make sure there is not going to be any
doubts or anything for whoever is reading those uh X-ray films and shadow that's gonna
that second pass on a cap or on the fitting side it's gonna cover everything
for the cap, I'm going uh around 140. 140 amps just holding that uh wire in the puddle
holding that uh tig rod on the top part of that puddle and just stretching it down
try to maintain uh have this equal steps try to be straight edge as you can
even though it's uh it's difficult and a hard weld to do you wanna you wanna have it look nice
okay now I start on my second pass
as I said I'm gonna go a little bit heavier on that fitting side
at this point, I really started sweating a lot as I'm on my knees all the time during this during
this weld as I said earlier at the beginning of video there's no room there's no even
room to stand tall also you got to be on your knees all the time so I'm doing the best I can
okay now we're gonna
going up to 10 o'clock it's where I'm gonna stop
the top part I already did the top part uh with a downhill capping and the from the bottom
I'm just connecting up as I said this is this is a final uh final cap final pass
I'm really satisfied with how it turned out and so is my QC good looking for a difficult and uh
really demanding uh Weld and as I said this is the X-ray so everything was good everything is okay
I'm happy and that's all matters thank you guys for watching thank you for your support
I have to share this video with you just to show you the life of the field welder
take care and see you in the next one