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The Basics of Gas Tungsten Arc Welding (GTAW/TIG)
Rating: 4.4 out of 5(54 ratings)
369 students

The Basics of Gas Tungsten Arc Welding (GTAW/TIG)

An Introduction to the Tools, Terminology and Major Concepts of GTAW, also known as TIG Welding
Last updated 6/2026
English

What you'll learn

  • The advantages and disadvantages of GTAW (aka TIG welding)
  • The equipment, materials and methods used in TIG welding
  • An overview of the welding-related defects - how they occur and what to do to prevent them
  • Pre-weld preparations to achieve a quality weld
  • Electrodes, gasses, filler materials and base materials
  • Primary and secondary welding variables
  • The Torch and gas shielding system
  • Welding terminology

Course content

1 section20 lectures2h 27m total length
  • Introduction to the Course5:08
  • An Introduction to Your Instructor0:57
  • Overview of GTAW10:39
  • Equipment8:05

    Explore the essential equipment for gas tungsten arc welding (GTAW/TIG), including power supply, torch, tungsten electrode, grounding, and shielding gas with argon or helium, plus torch types and filler options.

  • Advantages and Disadvantages of GTAW7:17
  • Advantages and Disadvantages of GTAW (Gas Tungsten Arc Welding)
  • Glossary of Welding Terminology1:39
  • Welding Current7:20

    Learn gas tungsten arc welding current types—direct current, pulsed current, alternating current with high-frequency start—exploring electrode polarity, heat distribution, aluminum oxide cleaning, and arc initiation.

  • GTAW – Types of Welding Current
  • The Torch and Gas Shielding System7:04
  • Electrodes and Gas8:07

    Explore tungsten inert gas welding, using a non-consumable tungsten electrode and inert shielding gas to protect the weld pool, while filler material is supplied separately via a wire.

  • Filler Materials6:28

    In GTAW, filler metal comes from a separate wire. TIG and MIG use the same filler material, only in different product forms.

  • The Tungsten Electrode3:56

    Learn tungsten electrode tip preparation for GTAW, including tip shapes, material compatibility, and current type (DC, AC) for different metals, plus safe grinding and torch setup.

  • Pre-weld Preparations9:49
  • Weldable Materials7:02

    Explore the tig welding process and its weldable metals, including aluminum, stainless steel, and carbon steels, and learn how ac current cleans aluminum oxide and why tig stays versatile.

  • The Welding Procedure Specification (WPS)8:22
  • Primary and Secondary Welding Variables5:34
  • Welding Defects and Discontinuities, Pt 18:28
  • Welding Defects and Discontinuities, Pt 217:04
  • Welding Defects and Discontinuities 1
  • Welding Defects and Discontinuities, Pt 36:58

    Identify crater cracks, longitudinal and transverse cracks, and arc blow in tig welding, and apply prevention methods such as back-off current and proper shielding gas.

  • Welding Discontinuities and Problems (GTAW)
  • Conclusion to the Course1:34
  • Bonus Lecture16:04

    Explore a range of manufacturing and quality courses, from Lean Six Sigma and reliability engineering to Excel analytics, designed to boost your gas tungsten arc welding (GTAW/TIG) skills and career.

Requirements

  • Basic knowledge of manufacturing

Description

Welcome to the Udemy course titled, "The Basics of Gas Tungsten Arc Welding (GMAW, TIG)" If you are new to the field of welding, this is the class you need to learn some of the over-arching concepts of welding and THE FULL RANGE OF BASICS associated with GMAW specifically.

GMAW (Gas Tungsten Arc Welding) is commonly referred to as "TIG" welding, which stands for "Tungsten Insert Gas". TIG of GMAW refer to the process of using a non-consumable tungsten electrode to deliver electrical current to your work piece. Tungsten has a very high melting point relative to other metals, so it holds up well to the high temperatures of welding. GMAW also employs the use of a shielding gas like argon or helium. This gas prevents the oxygen and nitrogen found in our atmosphere from contaminated the weld pool.

TIG welding is very precise when compared with other welding processes. It deposits a low volumes of material in exactly locations. It is commonly used on metals such as aluminum and copper, or thin sections of steel sheet. And because of its versatility, TIG is often the first process new welders learn.

In the class, you will learn:

  • An Overview of GMAW

  • Advantages and Disadvantages as compared to other welding processes

  • Welding current

  • The TIG Torch and Gas Shielding System

  • Electrodes

  • Filler and Base Materials

  • Welding Terminology

  • Pre-weld Preparations

  • Primary and Secondary Welding Variables

  • Welding Defects and Discontinuities

  • And a Whole Lot More!!

So if you've been looking for an place to start learning the basics of welding, THIS IS THE CLASS FOR YOU!! Sign up today to gain the skills you need to advance your skills in fabrication.

Who this course is for:

  • Quality Engineers and Technicians
  • Industrial and Manufacturing Engineers
  • Manufacturing Supervisors and Managers
  • Those looking for a first step into the welding profession