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FAB3030 Gas Tungsten Arc Welding

Advanced · 1 credit · TMT - Trades, Manufacturing and Transportation

Description
Students develop basic knowledge and skills related to the use of Gas Tungsten Arc Welding (GTAW) equipment and supplies to weld mild steel in the flat and horizontal positions.
Prerequisite
FAB2030: Oxyfuel Welding
Parameters
Access to a welding facility, complete with GTAW equipment and supplies, and to instruction from an individual with welding trade qualifications.
Supporting courses
FAB2060: Arc Welding 2 FAB2070: Gas Metal Arc Welding 1

Outcomes The student will:

  • 1 take preventive measures to avoid accidents and personal injury to self and others by identifying health and safety hazards associated with GTAW

    • 1.1 identify and describe the health and safety issues associated with GTAW, including:

      • 1.1.1 electric current

      • 1.1.2 inert gases

      • 1.1.3 arc radiation

      • 1.1.4 ventilation

    • 1.2 describe a safety plan in case of an accident

  • 2 outline the advantages of GTAW over other forms of welding

    • 2.1 describe the basic components and operating principles of GTAW

    • 2.2 identify the advantages of GTAW over other forms of arc welding

    • 2.3 describe the major types of power supplies and current outputs; e.g., high frequency current, alternating current (AC), direct current straight polarity (DCSP), direct current reverse polarity (DCRP)

  • 3 demonstrate basic GTAW competencies in the flat and horizontal positions

    • 3.1 identify the appropriate type of current used for welding:

      • 3.1.1 low carbon steel

      • 3.1.2 aluminium

      • 3.1.3 stainless steel

    • 3.2 explain the purpose of a shielding gas

    • 3.3 identify the appropriate type of gas to be used with:

      • 3.3.1 low carbon steel

      • 3.3.2 aluminium

      • 3.3.3 stainless steel

    • 3.4 select, prepare and install the appropriate electrode for:

      • 3.4.1 AC

      • 3.4.2 DCSP or direct current electrode negative (DCEN) welding

      • 3.4.3 DCRP or direct current electrode positive (DCEP) welding

    • 3.5 identify and demonstrate the appropriate start-up and shut-down procedures for welding mild steel

    • 3.6 show that mill scale, rust, paint or oil has been removed from the weldments

    • 3.7 list the characteristics of a weld that meets trade standards

    • 3.8 demonstrate proper handling techniques to prevent weld contamination

    • 3.9 identify the degreasers that are commonly used to clean filler materials

    • 3.10 describe the correct torch angle for a lap and groove weld in the flat, horizontal and vertical positions

    • 3.11 make lap and groove welds in the flat, horizontal and vertical positions

    • 3.12 perform a visual inspection of a weld and describe its characteristics

  • 4 demonstrate basic competencies

    • 4.1 demonstrate fundamental skills to:

      • 4.1.1 communicate

      • 4.1.2 manage information

      • 4.1.3 use numbers

      • 4.1.4 think and solve problems

    • 4.2 demonstrate personal management skills to:

      • 4.2.1 demonstrate positive attitudes and behaviours

      • 4.2.2 be responsible

      • 4.2.3 be adaptable

      • 4.2.4 learn continuously

      • 4.2.5 work safely

    • 4.3 demonstrate teamwork skills to:

      • 4.3.1 work with others

      • 4.3.2 participate in projects and tasks

  • 5 create a transitional strategy to accommodate personal changes and build personal values

    • 5.1 identify short-term and long-term goals

    • 5.2 identify steps to achieve goals

Program of Studies 2009. Source document, © Alberta Education.