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Everything You Need to Know About TIG Welding

Matthew Ward

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Everything you NEED to Know About TIG Welding: Learn how to do exceptional quality TIG welds and fabrications

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TIG welding, also known as GTAW (Gas Tungsten Arc Welding),is a specialized welding process that uses a non-consumable tungsten electrode to create an arc between the workpiece and the weld pool. This process is often used for welding thin metals, such as stainless steel and aluminum, and produces high-quality welds with minimal distortion.

How Does TIG Welding Work?

TIG welding works by passing an electrical current through a tungsten electrode, which creates an arc between the electrode and the workpiece. The arc melts the metal at the point of contact, forming a weld pool. The welder then adds filler metal to the weld pool, which is melted by the arc and solidifies to form a strong joint.

TIG welding is a relatively complex process, but it offers several advantages over other welding methods. These advantages include:

High-quality welds: TIG welding produces clean, precise welds with minimal distortion.
Versatility: TIG welding can be used to weld a wide variety of metals, including stainless steel, aluminum, and titanium.
Control: The welder has a great deal of control over the welding process, which allows for precise welds.

TIG Welding Equipment

The following equipment is required for TIG welding:

TIG welding machine: The welding machine provides the electrical current and controls the welding process.
Tungsten electrode: The tungsten electrode creates the arc and melts the metal.
Filler metal: The filler metal is added to the weld pool to create a strong joint.
Shielding gas: The shielding gas protects the weld pool from contamination.
Welding torch: The welding torch holds the tungsten electrode and directs the shielding gas.

TIG Welding Techniques

There are several different TIG welding techniques, each with its own advantages and disadvantages. The most common techniques include:

GTAW (Gas Tungsten Arc Welding): This is the most common TIG welding technique, and it is used to weld a wide variety of metals.
GTAW-P (Gas Tungsten Arc Welding with Pulsed Current): This technique uses a pulsed current to create a more stable arc, which results in higher quality welds.
GTAW-HF (Gas Tungsten Arc Welding with High Frequency): This technique uses a high frequency current to start the arc, which reduces the risk of contamination.

TIG Welding Applications

TIG welding is used in a wide variety of applications, including:

Aerospace: TIG welding is used to weld aircraft components, such as wings and fuselages.
Automotive: TIG welding is used to weld automotive parts, such as exhaust systems and manifolds.
Medical: TIG welding is used to weld medical devices, such as implants and surgical instruments.
Food processing: TIG welding is used to weld food processing equipment, such as tanks and pipelines.

TIG welding is a versatile and powerful welding process that can be used to create high-quality welds on a wide variety of metals. If you are interested in learning more about TIG welding, there are many resources available online and in libraries.