Thread: Tig ticket 7

Congratulations!!!!!!!!!!
Just had our tests here on Wednesday and Thursday, 18 in total. Nothing prepares you for the stress on the day!

Are you going for another ticket next semester?

Gday Stringy
Congratulations to you to ,there was about ten boys sitting the test in our class most of them doing the tig ticket 7 the rest doing stick we also had a few pull out at the last minute not feeling confident they were going to pass they will be back next semester ,
anyway i'm going to give it a rest for the moment and maybe do the mig next year
thanks caveman

No congralutions required as I am their teacher, and counsellor on test day!

8G and 8F have about a 85% failure rate mainly due to lack of fusion, but then the pressure tickets don't come easy. Our inspector was telling me that only 3 from 12 at another TAFE passed last week! Not good at $1200 a ticket!

Just my 2C on why they fail.
Having been in the inspectors seat many,many times I can say that the fails arise from not taking into account ,the simple causes of failure.
Candidates fail more often because of allowing themselves to fall into poor procedural habits and ignoring techniques that minimise the simple defects that cause failure.

Too many focused on the difficult tasks-ie,the overhead sections and failed to developed techniques that prevent arc strikes outside the welded zone,incomplete penetration,excess penetration and poor width to height ratios.
In addition to that many did not have 12 months industrial welding experience behind them.

The SAA standards book is an essential purchase as lots that failed never bothered to get one.

Above all, adopting the correct attitude to the course is the main thing that got the successful blokes through.

Grahame

Well done for wanting to get your ticket mate too many so called welders out there that will tell you that tickets dont matter,funny they are always the ones that dont have them,I got 1, 2, 4, 5, and seven in the days when TAFE was free.I served my time as a welder in UK and I was pretty off when I had to go to Tafe here but mate I learnt so much I had to go up a hat size.Im retired now after welding pipes most of my life, so I got myself a used Italian made Esseti 200 AC/DC Tig machine and Now I have to go back to school and learn Italian cos I cant make head or tale out of the instrutions.its true in all my years of welding I never used an inverter to weld aluminium,my point is you never stop learning.keep it up and never let the Xray boys
scare you.

Gday all
Part of the ticket requires you to pass a 150 question multiple choice theory exam in hsc like conditions in three hours i completed the exam in half that time and was confident i'd done enough to pass(65%pass mark) three days later was the practical
i joked with a few friends just imagine you pass the practical and fail the theory well my worst fears were realised when the head teacher handing out the results informs me i have failed the theory he had just floored me with one punch i went home a broken man after all the high fives of the day and hand shakes from some of the teachers congratulating me for completing both my my cert 3 in fabrication and engineering trade and the tig within the space of a few days anyway later in the evening(6:30pm) i get a phone call from the head teacher explaining they had failed to convert my score into a percentage and i had easily passed the exam what a day of highs and lows and back to highs again thank firetruck!!!
anyway i might need to go through it all again soon if i do the mig except for the theory which you only do once.
thanks boys for your words of encouragement and pointers
caveman

I just got me certificates 4 and 2 this semester so now have 1,1e,2,3,3e,4 will probably have a crack at 7 this semester. Makes u shake like anything when u do your first one, then settle down a bit

Gday Old fella Congrats
I'm sure next time around i'll be a little more relaxed, i could'nt wait till next year so i've re-enroled to do the mig (ticket 8) this semester, yeh theres nothing like doing it for the first time i was really nervous lucky i was doing tig if it was stick the electrode would have been moving around like a rubber pencil from all the shaking
thanks caveman

Hey i was just wondering when u done no.7 if u walked the cup or freehanded it, what sort of gap u used, root face, how many passes and about how many amps you used, im having a go at it this semester and was seeing what others use.

Gday old fella
On the 2g i used a knife edge (no root face) and a 3.25 mm root gap by striping the flux of a stick electrode and bending it in to boomerang and aligning the pipe from above by eye and did the root run at about 90 amps filling run at about 100 amps and two capping runs at about the 95 amps for the 5 g i used a root face of 1.5mm to 2mm because i found i needed a little meat as my platform and i used a 4mm electrode for my root gap to allow enough space to feed the filler from inside, without this gap the pipe closes up and you'll have trouble poking the filler rod in, i used 90 amps on the root run and 100 on the filling run and 95 on the cap some of the boys used higher amps but i found using higher amps you needed to work faster leading to mistakes
i used freehand for both welds i tried walking the cup on the 5 g in the months leading up to the test but it wasn't something you learn in a couple days so i stuck with what i know.
The root run is the one you want to get right you need 100% penetration you really need to get that filler in so the weld metal is fusing the two interior edges of the pipe.
If i needed to do a 2g again i would use a 1 mm root face and a 4mm root gap because i found it was starting to close up on me making it a little harder to get penetration.
you need to do what works for you in the end just don't be scared to experiment during the semester
Thanks cameman
ps: maybe later on you could give me some tips on stick

Hi its not a good practice to knife edge your root face as this can lead to tearing on contraction you may not see it with the naked eye but it will show up on xray,on large heavy wall pipe I always walked

Thanks for that, and if u ever want a hand with stick just ask. The pipe we are using is about 3 inch with about 6mm wall thickness. I have only been once so far and just trying to practice walking, get 2 runs in good then the cap doesnt look so good so got to try and work on it, im a fitter machinist by trade and havent done a real lot of tig work, mainly stick and mig.

Gday
A mate of mine works as a rigger at caltex and he took some video of the pro's tig welding large diameter pipe using a knife edge which my mate prepaired with the grinder and all their welds are x rayed
thanks caveman

Sorry a guy asked for advice on mytrade and I thought I was doing the right thing by giving him some. feathering edges on any weld is bad practice and I am very sure the welding engineer at any major oil refinery would be happy to explain.I welded pipe for Shell oil,Babcock,Aitons,Riley Dodds and cyanide lines for ICI and I never saw or heard of a Ticketed Rigger using a ####ing grinder
anyway you have heard the last from me I am sure the Aussie welding industry has room for yet another know it all Cowboy welder.