[lou2u]

Gidday 🙂

Ive just started training for my Number 7 ticket.

Am using the following setup:

No 8 Cup with Gas Lens
Gas Mark 12-14
Stickout – Root  & Hotpass 6mm
Cap 7-8mm
Electrode size 2.4 Pencil Prep
Pipe Id: 75mm
Thickness: 6mm

I want to cap in one pass with a weave for both my 2G and 5G is this allowed? I started working on my 2G @ this stage my cap is suffering a little overroll but even more profoundly undercut. My teachers keep telling me I wont be able to cap in one run but my mates in the field keep telling my to learn how to cap walking the cup in one run cause its faster……………have read through previous posts and will attempt to incorporate into my technique.

Any other suggestions?

How do you go about buffing pipe to help reduce undercut?

For my cap Ive just started setting up so that the weldpool follows the tip of my Tungsten and was washing the weld pool across which seems to snap into the sides of the cap and has all but eliminated the undercut should i persevere with this technique?

As for feeding filler into the weld pool Ive been using the laywire technique BUT some of my teachers keep saying I’ll get cold fusion Dip? or Laywire? Ive scoured the internet and a lot of the live footage shows all the Tig Welders using the laywire technique particularly on large diameter Pipe???????

Am happy to post pictures of my progress ……………………

Any Advice suggests etc etc really appreciated

Regards Lou 🙂

[lou2u]

Gidday graham 🙂

Just wanted to let you know that I passed my Cert 7 with flying colors. On the day myself and 4 other welders passed 2 Tig kids and 3 stick fellas all on pipe 2G n 5G
Whooooooooooo Hooooooooo
A big Shoutout to all the RIT boys who got through with me on the Day!

Regards Lou

[lou2u]

Gidday

Applied your suggestions ramped up the amps by 20 and stuck with 2.4 electrode and S4 Filler rod. The improvement was immediate Just need to finetune my Peno which is outta control at the moment!!!!…………..

Should i be feathering my tacks????? Im having a bit of difficulty with my tie-ins

Will post a few more pics as i approach test day so you can see the progression !!!!

Thx again your suggestions have been invaluable!!!!!

Welds completed in 4 runs then 3!

Regards Lou
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[lou2u]

Gidday

Im 5 weeks in and this is what im starting to consistently pump out. im at about 110 amps for the cap and it definitely looks as though I need to be hotter………………

These welds were done in about 7 runs I was just over flush with 4 but the welds had a really cold look so i ended up capping with an additional 3 runs which pulled it out to seven! totally agree that this is way to much!

At this stage im pretty happy with the peno presently around 106 amps…………..

Obviously need to start tuning things in till im happy with the appearance of the welds (At this stage im not) Unfortunately down with the flu and havent had a chance to apply your suggestions

Regards lou
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[lou2u]

Gidday 🙂

Thanks for pointing me in the right direction your suggestions are invaluable!!!!!!! I’ll apply the good oil tomorrow and let you know how i get on. I’ll try to remember to take some pictures so that you can see whats happening…………

Just to get me in the Ballpark what Amps would you be running at?????

Regards Lou

[lou2u]

Thanks for the reply i really appreciate it! and love the solid honest feedback!

When I first began my 2G I started with a 2.4 electrode and around a 1.6 root gap and wasent getting much penetration when i swapped over to a 1.6 electrode and pulled the rootgap up to 3mm I started to get good consistent results. The idea behind the electrode swap and thus fillerrod was that the weldpool would be a little less fluid and i hoped this would help reduce the overroll effect caused by gravity………………….?????? Also if i dip a 2.4 tungsten into the weld pool it feels less likely that I’ll leave some tungsten behind.

I also though it might help me build up my hot and filler passes before I cap @ the moment the entire weld is taking me 9 passes which feels way to much????

How many passes should i be looking to complete the weld in??? My instinct is telling me the less the better and probably means I have to feed way more wire into the weld pool during fill n capping runs????

IS it worth trying out s4 or s6 filler rod im presently using s2?????????

I’ll try welding it out with 1.6 filler rod and electrode tomorrow

Thx again

Regards Lou 🙂

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