6g 6 inch pipe Tig Root laywire technique settings and arc shots

scroll down for detailed settings

There are several ways to weld a root pass for a 6g pipe test.

The method you choose might be dictated by the requirements of whoever is administering the welding test.

Some inspectors want a lot of reinforcement on the inside...others want slightly above flush.

This is the laywire method.

Usually, the root pass will be slightly above flush after the hot pass.

Another method is the dip keyhole method which is a bit slower but allows for more root reinforcement.

And of course back feeding is another technique that might allow for a heavier root pass.

6g pipe root pass

Did you know?..
There are several hundred videos over at welderskills.com from beginner to advanced... to down and dirty repair videos on farm equipment...to weld certification test videos.

Whether you are a student, hobbyist, or a working welder who wants to sharpen up, I want to encourage you to take the free 7 day test drive and get access to all the courses and over 700 videos.

Get in there and lets all get better together.

Its easy to sign up…and even easier to cancel with no hoops to jump thru.

Invest in yourself,

See you in there.


Jody

WELD PROCESS = TIG, GTAW, GAS TUNGSTEN ARC WELDING,  

METAL TYPE = carbon steel PIPE

THICKNESS = 6 inch schedule 80 pipe wall thickness .430"

WELD TYPE = groove   

JOINT TYPE = BUTT WELD OPEN ROOT WITH 1/8” GAP AND ZERO LANDLAYWIRE TECHNIQUE USING FORWARD AND BACK MOTION

POSITION =6G

AMPERAGE =  115-125 AMPS  

TUNGSTEN = 2% LANTHANATED, 3/32"

FILLER WIRE = 1/8” ER70S2

POLARITY = DCEN

GAS FLOW = 20 CFH argon

CUP SIZE =  8

PRE FLOW =  MANUAL

POST FLOW =  10

ADDITIONAL SETTINGS =   

TIPS: EXTEND ELECTRODE ENOUGH TO GET A DECENT ANGLE SO THAT WALKING THE CUP OR FREEHAND WELDING BOTH WORK WELL

 Aim for an arc length that is equal or less than the diameter of your tungsten electrode.

Torch angle can be forgiving provided your arc length is tight.

Keep the hot tip of the filler wire shielded by the argon envelope from the tig cup

Snip oxidized tip of filler metal before a restart

tig kits banner 1

"laywire" just means leaving the wire in the puddle as opposed to a dip and keyhole technique

The reason for freehand as opposed to walking the cup, is that it allows for a forward and back motion as opposed to sideways.

forward and back can help with getting more push thru on the root pass which is helpful on a weld test.

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.