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FAB2060 Arc Welding 2

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

Description
Students identify appropriate electrodes by visually assessing a weld and making the necessary adjustments to improve weld quality while developing horizontal position welding skills.
Prerequisite
FAB2050: Arc Welding 1
Parameters
Access to a fabrication work centre, complete with Shielded Metal Arc Welding (SMAW) equipment and supplies, and to instruction from an individual with formal, specialized training in arc welding practices.

Outcomes The student will:

  • 1 explain the current systems used to classify electrodes in Canada and the United States

    • 1.1 describe the purpose of the core wire and electrode coating

    • 1.2 identify the characteristics of an electrode using American Welding Society (AWS) and Canadian Standards Association (CSA) codes

    • 1.3 show the relationship between metal thickness, electrode size and welding amperage

    • 1.4 describe the electrode(s) that can be used for a given application by considering:

      • 1.4.1 properties of the base metal

      • 1.4.2 weld position

      • 1.4.3 flux requirements

      • 1.4.4 material thickness

      • 1.4.5 static and dynamic load characteristics

  • 2 identify strategies to assess and improve weld quality

    • 2.1 compare straight and reverse polarity and the resulting heat distribution

    • 2.2 describe the advantages and disadvantages of using alternating and direct current

    • 2.3 describe the effects of a short and long arc on mild steel

    • 2.4 describe the effects of improper:

      • 2.4.1 amperage setting

      • 2.4.2 arc length

      • 2.4.3 travel speed

    • 2.5 explain the importance of removing the following from a joint before welding:

      • 2.5.1 oil

      • 2.5.2 paint

      • 2.5.3 rust

      • 2.5.4 mill scale

    • 2.6 inspect a weld by considering the overall appearance, size and shape of the beads, plate penetration, fusion and degree of undercutting and overlapping

  • 3 demonstrate basic SMAW competencies in the horizontal position

    • 3.1 use the appropriate electrode and machine setting to make single and multiple pass fillet in the horizontal position and groove welds in the flat position

  • 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 identify possible life roles related to the skills and content of this cluster

    • 5.1 recognize and then analyze the opportunities and barriers in the immediate environment

    • 5.2 identify potential resources to minimize barriers and maximize opportunities

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