May 28, 2024  
2022-2023 College Catalog 
    
2022-2023 College Catalog [ARCHIVED CATALOG]

WLD 160 - Arc Welding

4 Credits, 6 Contact Hours
2 lecture periods 4 lab periods

Principles and techniques of joining metals with an electric arc as the source. Includes arc welding uses, safety, techniques, flame cutting, joint design, welding costs, electric currents and power sources, carbon arc cutting, filler metal selection, hardfacing, and metal identification.

Prerequisite(s): WLD 110  
Information: Prerequisite may be waived with appropriate work experience or course work. See a welding instructor or advisor for prerequisite information.
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Course Learning Outcomes
  1. Demonstrate all safety protocol
  2. Describe effects of root opening, bevel angle, and reinforcement
  3. Describe hard facing techniques, preparation, and electrode selection.
  4. Describe identification methods on ferrous and non-ferrous metals and steel alloys
  5. Demonstrate welding competency by completing an American Welding Society D1.1 Structural certification test.

Outline:
  1. Introduction to Arc Welding
    1. Welding defined
    2. Uses of welding
    3. Welding processes
    4. Occupational opportunities in welding
    5. Training for welding occupations
  2. Safety in Arc Welding
    1. Burns
    2. Eye and ear protection
    3. Respiratory protection
    4. Ventilation
    5. Electrical safety
    6. General work clothing
    7. Cylinder safety
    8. Fire protection
    9. Work area
    10. Hand and power tools
  3. Basic and Intermediate Arc Welding Techniques
    1. Striking the arc
    2. Effect of too high or too low current setting
    3. Electrode size and current setting
    4. Arc length
    5. Electrode angle
    6. Electrode travel
    7. Stringer beads
    8. Weld bead placement
  4. Oxyacetylene Flame Cutting
    1. Safety in cutting
    2. Pressure regulators
    3. Cylinder valves
    4. Cutting torches
    5. Cutting tips
    6. Check valves
    7. Hoses and fittings
    8. Flashbacks and backfires
    9. Types of flames
    10. Leak detection
    11. Manifold systems
    12. Cutting techniques
  5. Arc Welding Terminology
    1. Arc welding terms
    2. Arc welding definitions
  6. Welding Joint Design
    1. Forces on a weld
    2. Types of weld joints
    3. Weld joint design
    4. Edge preparation
    5. Joint dimensions
  7. Welding Costs
    1. Minimum root opening
    2. Minimum bevel angle
    3. Minimum reinforcement
  8. Out of Position Arc Welding
    1. Vertical position welding, all joints with E6010, E7018 electrodes
    2. Overhead position welding, all joint with E6010, E7018 electrodes
    3. Horizontal position welding, butt joint, with E6010, E7018 electrodes
  9. Electric Currents for Arc Welding
    1. Electric currents
    2. Arc temperature
    3. Direct current
    4. Alternating current
    5. Polarities
  10. Welding Power Sources
    1. Generator power source
    2. Transformer/rectifier power source
    3. Transformer power source
  11. Air Carbon Arc Cutting
    1. Carbon arc cutting safety
    2. Air carbon arc cutting
    3. Torch design
    4. Carbon electrodes
    5. Power source
    6. Air supply
    7. Application process
  12. Filler Metal Selection
    1. American Welding Society (A.W.S.) filler metal classification
    2. Electrode coatings
    3. Electrode sizes
    4. Types of electrodes
    5. Electric currents vs. electrode type
    6. Electrode metal transfers
  13. Hard Facing
    1. Process
    2. Preparation
    3. Techniques
    4. Electrode selection
  14. Basic Metal Identification
    1. Five basic test methods
    2. Ferrous and non-ferrous metals
    3. Steel alloys
    4. Steel numbering system