hello everyone and uh welcome to extreme tig channel uh in today's video we got the one gf
uh it's a structural well test flight position which is grooving field world as you can see
one uh one side of the plate is a beveled 45 degree angle and the other one is the square edge
this typical canadian cwb weld test covers only flat position for me this is one of the easiest
well tests but there's these people also there fail this is one example that uh got banned and uh
and failed uh there's a couple of reasons it can be insufficient heat poor manipulation technique
you can see the lack of fusion uh the cause might be when you allow your puddle to flop
against the square plate instead of pointing the arc at the square edge of the plate holding a
long arc incorrect restart technique that's why stop starts uh are important incorrect electric
electrode angle for manipulation okay for this uh i'm going to use 134 135 it's a good habit dial in
before you start your test actually dial in your welding machine so you don't have any issues uh
so we already marked where we gonna where are we gonna stop there's a mark on both sides
you have to stop and then you gotta take that cube on the welding examiner uh
as you can see here i'm just uh pretty much uh there's not big manipulation except that uh rod
inclination the rod angle uh just lean between that edge and a backing strip and let it burn
by itself it's uh it's a pole technique with that amperage you should be good uh
from uh beginning all the way to the cap you you shouldn't be have to change anything pretty much
okay now we're gonna do on the other side
so the only rod allowed for this test is a 1 8 7 18 i'm not allowed to use any other size
of the stick rod
so once you're done those two beads as i said you have to go and take the welding examiner
and then he will tell you to continue on in the same direction which is very important
for this test uh no grinders are allowed saw blades files or methods that remove deposit metal
or ultravel bead profile they're not permitted
you got only 45 minutes it's a good habit for your stop start always restart the arc ahead
of the crater where you stopped then move back into the crater fill it and continue to weld
technique for the field passes is uh it's up it's up to welder
but it's uh generally considered easier and there is less chance of leaving a defect in the weld if
the stringer passes are used as you know this is only stringer passes and which is the best
to prevent from any slag or lack of fusion or whatever that's why
you don't want any you don't want to have any and it's like especially on a flight i don't know
i've seen couple videos on youtube the guys saying that this is one of the hardest tests it's tricky
uh i will really disagree with that this should be one of the easiest out of all four
tests but if you do it properly i mean any test can be
if you do it if you do it wrong the only test can be hard if you don't know what you're doing okay
so we got two passes as you see we did in the same direction now we're gonna fill one in the middle
still using the same thing same same amperage 135 you won't go wrong with that amperage
basically you you're putting down layers of uh beads until you got up to the
you want to fill it to flash
so you can see you can cap it
as i said no no grinders no saw blades you can use uh you can use a buffing wheel uh
it's a good uh one tip uh use buffing wheel if it's when the plate is still hot i mean
it's a small plate it's gonna be hot pretty much all the time because you got 45 minutes
but if you lean and push a little bit harder on that buffing wheel you can actually have a
if you got any build up or something you can you can smooth it out
easy with the buffing wheel you don't need it grinder okay this is uh where i start
on that backing plate there's a little window on the on all four size then you can
have a little whatever uneven uh bead or you can have little mistakes on those corners
because uh that's gonna be cut they're not gonna be use that corners for uh later for uh
for for bend it's gonna be three strips out of that plate i'm gonna bend
and pretty much uh that's what you do you just laying down the beads you always always start
and go around the corner okay now we fill that straight edge i'm gonna move on on that bevel one
the only thing i can i can say here uh just make sure that you're never
weaving up against a square cut plate always point to the square cut plate when welding
especially for that as i said that square straight one
okay now we're gonna just keep on uh keep on feeling as you can see just uh just stringer bits
that's it pretty much uh i don't know did i mention but after you uh
after you've done your first two passes on each side after world an examiner say it's okay you
can do either direction so it's a crucial for first two passes your stop starts gotta
be in the same direction after that you can left right right to left whatever it's easier to do
that's what i like to do there's not big manipulation or weaving or anything i'm just
holding rod just have that nice angle that rod inclination and let it just melt inside
it's always advantage with stringer bits especially on the multi passes like this
it's nice and blended there's no porosity there's no slag nothing
now you just keep keep feeling keep going i always want to do the straight edge first
and one one rod is enough for for the whole length so you don't have to stop
that's why you don't want to manipulate too much just in case if
you run out of the rod and you didn't finish the entire bead by the end of the that plate
then you got to do stop start again basically you just want to stop start on beginning of your test
that's uh what those two requirements are but other than that one rod should
be enough for an entire bit for the length of that uh test coupon okay now just continue on
filling that middle
until it's even and flash
for the phillips fillet size the fillet weld size is eight mil or 516 max
this mean uh that you can put on a five mil or 316 on six mil quarter or eight mil 5 16 feel it weld
the legs of the phillip weld must now vary in size by more than one and a half mil or ancient sixteen
as i said those corners are really not important that much
it's it's more to get your rod warm up
on a working temperature and so you can have a nice proper bead
on on a spots that's gonna be cut and bend
so as i said uh there is that little window on those corners that you can have any
it doesn't have to be beautiful have any mistake here i am uh
as you can see here i am actually manipulating that rod
burning between that uh bead i have and that's the straight edge just trying to make it feel uneven
because there is a little a little wider space in between it's not going to be
filled if i'm just holding that rod it's going to stay that's why i want to cover
this is the only one part that's a little bit wider and that's why i'm doing that
okay we're probably gonna have four passes for the cap
okay start again start on a straight edge on a straight cut side
that's not big there's no science fiction it is just just hold that rod
make a nice nice and square you don't want to have any undercuts
you can have some but not that much
okay now we're gonna put one more bead on this side
i think it says uh the maximum undercut should not exceed uh 0.9 mil which is uh ancient 32
ancient 30 seconds
okay now we got those three passes now we're gonna put one more
on this side and that should be done with a with a cap as i said you only got 45 minutes
for this so if you do proper proper steps as i did in this video you shouldn't have any problems
as i said for me the flat is one of the easiest worlds i don't know whether
some some guys on youtube some welding girls they're making big science fiction out of flat i
mean if you if you got a hard time in a flat like what's going to happen in overhead or which is
same as flat but opposite it's uh it's a gravity the biggest issue with the
4gf is the gravity but for this one i mean you shouldn't have really any any any problems
vertical is a little bit different story or or horizontal where your world can sag down
or vertical the same gravity overhead so out of all those four this should be the easiest one
okay and then i did the final pass okay now we got four passes cap
as i said this is well test doesn't have to be beautiful
it's nice and uniform that's all matters now they cut like uh three three pieces you gotta clean it
around the edges when you're doing root or you're removing that backing strip always go across with
your grinder you don't want to chase it don't go too deep round the edges make it nice and clean
and now we go for bend
it's a one root and two face if i'm not mistaken
and there it is that's it that's our flat it's all good
i got others i did four tests here and i hope uh it's gonna be more material for next videos
hope you guys like it enjoyed and see you on the next one play safe thanks
you