Jul 16, 2019  
2018-2019 Course Catalog 
    
2018-2019 Course Catalog [ARCHIVED CATALOG]

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AUT 140 - Welding for Automotive Mechani

Credits: 2
Lecture Hours: 0
Lab Hours: 4
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech
Skills will be developed in oxy-acetylene fusion and braze welding, shielded metallic arc welding, as well as oxy-fuel flame cutting. Safety is emphasized and basic welding theory is discussed. Warnings concerning the danger and liability involved in welding high-strength steels will be stressed (auto body and chassis, etc.).
Competencies
  1. View required videos and do the workbook assignments
    1. Study pages 4 through 6 of safety handout
    2. Demonstrate an understanding of safety and equipment.
  2. Demonstrate proper set up, start up and shut down procedures for Oxy-Acetylene equipment
    1. Demonstrate the proper set up and shut down for the instructor in the lab.
    2. Demonstrate lighting torch, adjusting flame and proper shut down
  3. Perform manual flame cutting on various thicknesses of steel.
    1. Set up cutting torch with proper tip and Oxy-Acetylene pressures.
    2. Manually flame cut sheet metal, ¼”, ½”, bevels and pierce holes.
    3. Reproduce cuts for instructor
  4. Shielded Metal Arc Welding
    1. View videos #1 and #2 and do work book assignments.
    2. Explain the safety rules and setup of welding machine power sources.
    3. Demonstrate the setting of AC and DC currents and how they are used.
  5. Classify and select electrodes
    1. View video #3 and complete workbook assignment.
    2. Explain electrode numbering system to the instructor
    3. Match electrodes to the right polarity
  6. Stringer beads, stops and starts
    1. View video #4 and complete workbook assignment.
    2. Make stringer beads using 1/8? E-6013, E-6010 and E-6011.
    3. Practice stops and starts using 1/8” E-6013, E-6010 and E-6011.
  7. Weld lap and tee joints in the flat position
    1. View videos #8 and #14 and complete workbook assignments
    2. Produce a lap joint in the flat position using 3/16” material and 1/8” E-6013, E-6010 and E-6011
    3. Produce a T-joint in the flat position using 3/16” material and 1/8” E-6013, E-6010 and E-6011
    4. Multi-pass T-joints in the flat position using 1/8” E-6013, E-6010 and E-6011.
    5. Lab test over SMAW for final grade
  8. Gas Metal Arc Welding
    1. View videos #1, #2, #3, #4 and complete the workbook assignments.
    2. Explain the safety rules to observe when using GMAW equipment.
    3. Describe what personal safety gear to use when using GMAW equipment.
  9. Set up and shut down of GMAW equipment
    1. Explain the proper set up and shutdown of GMAW equipment.
    2. Name the two main components of GMAW
  10. Selection of gases and flow rates for GMAW
    1. Identify some of the gases used with GMAW
    2. Describe proper handling of GMAW shielding gas cylinders.
    3. Demonstrate how to place regulator on gas cylinder and how to set correct flow rate
  11. Functions of DC current and it’s relation to GMAW.
    1. Explain what two types of power sources are used with GMAW.
    2. Explain what type DC current is used for different metals
    3. Demonstrate how to change polarity on GMAW equipment
  12. Electrodes sizes and their relation to material thicknesses.
    1. Explain how to choose correct electrode diameter.
    2. Explain what amperage settings are used for the electrode being used.
  13. Welding stringer beads, stops and restarts in the flat position.
    1. Select .035 wire, 75/25 shielding gas and 3/16” plate.
    2. Place gun nozzle in the pushing position and run stringer beads.
    3. Place gun nozzle in the pulling position and run stringer beads.
    4. Practice stops and restarts both pushing and pulling.
  14. Single pass on lap and T-joints in the flat position
    1. Select .035 wire, 75/25 shielding gas and 3/16” x 2” x 6” metal
    2. Position metal to form lap joint and push stringer beads both sides.
    3. Position metal to form lap joint and pull stringer beads both sides.
    4. Position metal to from T-joint and push root pass
    5. Position metal to form T-joint and pull root pass
  15. Multi-pass T-joint
    1. Select .035 wire, 75/25 gas and 3/16” x 2” x 6” metal.
    2. Position metal to form a T-joint
    3. Weld root pass, 2nd and 3rd pass forming multi-pass weldment.
  16. Vertical down welds on lap and T-joints, multi-pass vertical down welding on T-joints.
    1. Select .035 wire, 75/25 gas and 3/16” x 2” x 6” metal.
    2. Place lap joint in the vertical position and weld from top to bottom.
    3. Place T-joint in vertical position and weld from top to bottom.
    4. Place T-joint in vertical position and weld from top to bottom with multi-pass welding
  17. Sheet metal welding (if time permits).
    1. Select .030 wire, 75/25 gas and 16 gauge sheet metal 2” x 6”.
    2. Place metal to form lap joint and T-joint and weld in the flat position.
    3. Place metal to form lap joint and T-joint and weld in the vertical down position.



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