ATE Welding Engineering
 
 
 
 
Technical Lab

TIG Welding Machines - Gas Tungsten Arc Welding Machines ( GTAW Welding Machines ) (TIG)

Gas Tungsten Arc Welding (GTAW) is frequently referred to as TIG welding.  TIG welding is a commonly used high quality welding process.  TIG welding has become a popular choice of welding processes when high quality, precision welding is required. 

In TIG welding an arc is formed between a nonconsumable tungsten electrode and the metal being welded. Gas is fed through the torch to shield the electrode and molten weld pool.  If filler wire is used, it is added to the weld pool separately
TIG Welding Machines - Gas Tungsten Arc Welding Machines ( GTAW Welding Machines )

TIG Welding Benefits

Superior quality welds 
Welds can be made with or without filler metal
Precise control of welding variables (heat)
Free of spatter
Low distortion

Shielding Gases

Argon 
Argon + Hydrogen
Argon/Helium
TIG Welding Machines - Gas Tungsten Arc Welding Machines ( GTAW Welding Machines )
Helium is generally added to increase heat input (increase welding speed or weld penetration).  Hydrogen will result in cleaner looking welds and also increase heat input, however, Hydrogen may promote porosity or hydrogen cracking.

GTAW Welding Limitations

Requires greater welder dexterity than MIG or stick welding
Lower deposition rates
More costly for welding thick sections
Common GTAW Welding Concerns
We can help optimize your welding process variables. Evaluate your current welding parameters and techniques.  Help eliminate common welding problems and discontinuities such as those listed below:
Weld Discontinuities
Undercutting
Tungsten inclusions
Porosity
Weld metal cracks
Heat affected zone cracks
TIG Welding Machines - Gas Tungsten Arc Welding Machines ( GTAW Welding Machines )

TIG Welding Problems

Erratic arc
Excessive electrode consumption
Oxidized weld deposit
Arc wandering
Porosity
Difficult arc starting
TIG Welding Machines - Gas Tungsten Arc Welding Machines ( GTAW Welding Machines )

If your company is experiencing these or other welding problems you can retain ATE to improve your weld processing.  Hire ATE to act as your welding specialist.