Introduction to Gas Tungsten Metal Arc Welding (TIG)(65 Hours)
Course Description: “Introduction to Gas Tungsten Arc Welding” will cover the basic theory and hands on practice, as well as common operation procedures needed to perform the GTAW process. Understanding of the different current and polarity selections in relation to welding variables and machine settings. Definitions and terminology commonly used in GTAW. Basic understanding of symbols used in welding. Basic understanding of filler metal addition techniques like lay, dip and “walking the cup”. Proper tungsten preparation, selection, and taper angles. Opportunity for students to qualify under D1.1 Structural Code in the 1G position with open root.
Course Objectives: After completion of this course, students will be able to:
- Describe the GTAW process
- Understand and describe the terms and definitions associated with GTAW
- Explain why Tungsten is a good electrode
- Explain how to limit electrode erosion in GTAW
- Discuss the various types of tungsten and their used in GTAW
- Demonstrate how to properly prepare the tungsten and how to clean it
- Demonstrate how to remove a contaminated tungsten end
- Compare water-cooled GTAW to air-cooled GTAW
- Describe the parts of a water-cooled GTAW system
- Describe the parts of an air-cooled GTAW system
- Discuss proper cup selection for GTAW
- Discuss Hi-frequency and wave forms and their purpose in relation to GTAW
- Discuss proper filler metal selection using the AWS classification and numbering system.
- Define pre-flow and post-flow
- Demonstrate proper set-up of the GTAW system
- Demonstrate how to properly establish a GTA welding arc
- Demonstrate how to properly weld an “open” root joint
Tuition/Scholarship funds are available!
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