WELDING TIG 1

W

Tungsten symbol

Th

Thoriated symbol

La

Lathanated symbol

Ce

Ceriated symbol

Zr

Zirconiated symbol

G

General, multiple alloys symbol

P

Pure tungsten symbol

EWLa-2

Blue

EWLa-1.5

Gold

EWP

Green

EWTh-2

Red

Lift Arc

Tap the tungsten to base metal to start arc (no foot pedal)

Scratch Start

Scratch the tungsten against base to start arc (dirtiest)

High Frequency

Hover the tungsten over the metal to start the arc (foot pedal)

How to get CFH min from Gas Cup size

Ex. 6 Gas cup, 6×2= 12 CFH min

How to get max stick out from Gas Cup size

Ex. 6 Gas cup, 6/16= 3/8” max stick out

TIG stick out

1/4”

DCEN

Deeper penetration

DCEP

Better Cleaning Action (shallower pen)

TIG welding power source

Constant-current, capable of DC, AC, and HF

AC tungsten shape

Hemispherical

DCEN tungsten shape

Tapered w/blunted tip

Water cooled torch

Designed for welding at currents above 200 A

Air cooled torch

Designed for welding on light gauge metal at currents less than 200 A

Helium has a higher ionization potential than Argon

True

Stickout is determined by

Weld joint