Metallurgical Consultants

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 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

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.

TIG Welding Limitations

Requires greater welder dexterity than MIG or stick welding
Lower deposition rates
More costly for welding thick sections

Common TIG 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 Problems

Erratic arc
Excessive electrode consumption
Oxidized weld deposit
Arc wandering
Porosity
Difficult arc starting

If you are experiencing these or other welding problems and need consulting services, contact us to improve your weld processing.

Contact Information

Telephone: 407-880-4945 ----------- Consulting assistance is only available for customers
FAX
Postal address (greater Orlando area): AMC; 380 S. State Road 434; Suite 1004 - #166; Altamonte Springs, FL 32714
Electronic mail: General Information: Consulting@MaterialsEngineer.com
Customer Support: Support@MaterialsEngineer.com
Webmaster: Help@MaterialsEngineer.com

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