Hello everyone and welcome to the X3M TIG Channel, hope everybody is doing good, so for today's video
I'm going to show you guys a root pass for a x-ray this joint I have to do it's going to be
shot I'm gonna do an x-ray so I got a TEE six inch with Vitaulic fitting for the root I'm gonna use
130 amps and I'm gonna show you the steps that I'm using and I'm doing to perform this task so cup
size seven I like seven fits inside perfectly in that six-inch Groove I can slide it I can wiggle I
can walk the cup on the bottom on the top all the way around whatever so torch 150 amps tig torch
and stick out 1/8 tungsten it's like up up to 10 mil is always 9 mil as you can see here
usually for reference I like to do put on the top of the bevel and if the tip of the tungsten is
touching that edge of the bevel that's pretty much good stick out for me I like to use that
so in this video I'm going to show you guys proper steps I'm doing as I said
this is for my x-ray so if it works for me I hope it's gonna work for you as well
as you can see here I'm just gonna go like 15 - 20 degree angle for that filler wire the
way I'm feeding it from the outside nothing fancy so it's not a back feed it's just it's
going to be like constant feed once I get to that tack I'm just gonna feather up those
tacks that are not really good quality tacks so I just put it to keep those two parts together
I but I did some root penetration it's not that good I'm just gonna remelt them
as I said just gotta keep that rod inside start from the bottom going up once I get close
to the tack I'm gonna pull it out and finish it from the outside and just keep the rod connected
guys just keep it in the puddle feed as needed and just, just removed once you go up that's
what I'm doing I'm gonna show you later so here for the bottom make a connection between both sides
when it's nice good solid liquid puddle and then you can feed that rod and just keep it connected
in the puddle be careful with the tip of the tungsten and you don't want a dip you don't want to touch
that puddle you just gotta have that nice feeling how much is needed for that for the length
and just stretch that puddle just push it side to side the edges are opening you can see
you don't have to worry you just kind of keep it keep it in the middle and there's
the stretch that puddle side to side as you pretty much always in all of my all my videos uh
on the bottom I'm doing a constant feed and later on the top I'm doing
dipping technique we're going to talk later about dipping technique and the pros and cons
okay so you can see here this is the partial root I have done I always like the big bigger heavier root
especially at the bottom the here thing usually what is happening
it's like a little pool created here on the side especially on a thicker root
and usually on the sides like eight to nine o'clock it's like a little pool created when
the puddle cools down and just sags down and then create a little poll so we're gonna
grind out from the outside but you're not gonna feed the rod from outside you want to put it
inside and as you want to continue to the same thickness of the root you want that root to be
the same size the same shape the same uniformity so it's just gonna start from the
start from the inside feeding that Rod once you on that continuation once you start preheating
once it starts melting just add rod and just just keep adding that Rod no need I can't tell you
exactly how much you have to push it's all about filling this is something that you're gonna
get while more you burn more you learn and for the tie ins actually it's not a really good tie ins
I said this is just really I feather out those tacks really thin I'm just gonna remelt them
but usually on the tie ins and I'm gonna show you later in this video too I just usually always
pause and dipping technique adding rod side to side and just go over it and continue on
and pretty much now from nine o'clock I just continue on with a dipping technique
as I said there are lots of reasons why dipping technique gives you better control
way better control than I can say than all other welding techniques
heat control, consistency, and efficiency dipping techniques can help you
to have that consistent weld for bead size and the shape which is of course important for producing
a strong and reliable weld I'm just going to continue on now as you can see here there's no you
that weld pool usually what it's usually what it shows you can see that
it's like it's not even you can see the difference when the guys
usually, stop-start and especially when you got that poll and its uneven spot
I just continue dipping as you can see side-to-side
and it's always for me dipping technique is it's a basic in tig welding so if you
don't have too much experience and you've got x-rays to pass try with this if you didn't try
so far as I said the dipping technique is give you way better control and allow you for precise
adjustments and you can produce consistent and efficient welds okay now for this side is done
okay this is the root so far on this side as I said I like a nice heavy solid root as
I like to run hot, especially on a hot pass okay now from the bottom now we go for the bottom on
the the other section same thing preheat and once you start melting once you get that puddle liquid
added the filler wire and just keep it inside the puddle and guys try to push that
bead as much as long as you can less stop more consistent that weld is going to look if you got
more stops it's not going to be even especially if you don't know how to properly stop-start
for that continuation you're the one that weld
to be visible when you have a stop starts just for you I mean you can have visual stop
starts but as long as the weld is good it's okay but I'm just saying for you you know you wanna
You Wanna Get Better in that okay you can see here I went to the other side
you can see by the root pattern on two sides okay now the same thing on this side I'm just
gonna feather out I'm gonna make it really thin that bridge tack and I'm just gonna continue on
so constant feed is gonna be up to that three o'clock
three o'clock is on this on my side now
and then later on I'm just gonna pull it out slowly and just keep on on with the
dipping technique the good thing with the dipping technique is you put
like small increments and you also keep that heat input keep it on a minimum
which can reduce the risk of distortion and other welding defects of course and
as as I said you actually control the amount with that small increments that you actually putting in
oh now here for the tie in just I always pause a little bit add the rod on one side both
sides then pause a little bit and then just go over with adding Rod also you when you go over the
tack you add Rod is needed I'm just going to show you here on on the tie-in on the top
some guys they like to lay wire it all depends from the size of the Gap as well
you know you can go hot but it that got some risks you know for the grapes
or if you miss little step you know when you lay wire and then you wanna speed travel as
fast you can misstep and it's gonna be shown on your X-ray that's it for the
root pretty much I'm happy with it it's a good solid root all the way around
as I said I like heavier root especially for the hot pass, I like to run really hot
so this is 130 for the root usually I go even 140. but I just want to show you
like the proper step is that this is for an x-ray it's going to be an x-ray for me so if you're not
sure if you deep tungsten couple times you can take a grinder and lightly just grind all the
way around and run a buffing wheel you want to have a nice clean root from outside
just if you're not sure so I'm gonna go 160 for the hot pass
and now one might wonder, if it's going to be suck back or something, no, this is the reason
why I'm going to show you it also so the travel speed is a most important thing here
and the thickness of your root so if you got really shallow root and if it's a
really flush with the material then yeah there's a big possibility of
a suck back you definitely don't want that and this is the result
I like 160 I like hotter, it gives me nice control I can really melt that 1/8
and that's really nice and as you can see there's no suck back there's not even a
zero of any inch any millimeter of that root was being sucked back, that's it for
today's video guys I hope you like it hope you enjoy it if you got any comments
feel free to comment I'm always gonna try to answer, I'm not really active that much on Instagram and Facebook
got lots of messages daily just impossible to answer all of them, so feel free to comment here
on YouTube and I'll try to answer. Thank you very much and see you at the next one guys, bye !