Gas Tungsten Arc Welding

1 THE TIG PROCESS

1-1 What Is TIG

1-2 GTAW (TIG) Connections

1-3 TIG Advantages

1-4 TIG Disadvantages

1-5 AC Sine Wave

1-6 Zero Crossover Area

1-7 Squarewave Imposed Over A Sinewave

1-8 Conventional Squarewave AC

 

2 ARC SHAPING CAPABILITIES

2-1 Arc Starting Methods

2-2 Balance Control

2-3 AC Frequency Adjustment Control

2-4 Amperage Adjust Control

2-5 Frequency Adjustment Control − 60 Hz

2-6 Frequency Adjustment Control − 200 Hz

2-7 Suggested Inverter Power Source Starting Parameters For Various Aluminum Joints

2-8 Suggested Inverter Power Source Starting Parameters For Various Aluminum Joints (Continued)

 

3 TUNGSTEN SELECTION AND PREPARATION

3-1 Tungsten Shape For AC Sine Wave & Conventional Squarewave

3-2 Tungsten Shape For Inverter AC & DC

 

4 TIG SHIELDING GASES

4-1 TIG Shielding Gases

4-2 Argon vs. Helium

4-3 Argon vs. Helium

 

5 Lift-Arc TIG Start Procedures