Portland Community College | Portland, Oregon

This is an outcome based course utilizing a lecture / lab format. This course includes classroom discussion, videotapes, theoretical concepts, lab demonstrations and technical skills. Course outcomes include; theoretical concepts, layout, fabrication, oxy-fuel cutting, safety and environmental awareness, communication, computations and human relations.

• Function safely in the PCC Welding Laboratory

• Demonstrate professional work ethics(habits)

• Apply math and science concepts related to GMAW-P

• Understand the principles of the Gas Metal Arc Welding - Pulse process

  • Terminology
  • Equipment
  • Operation variables
  • Welding specifications

• Weld common joints in all positions on mild steel  and aluminum using the GMAW-P transfer.

The student will be assessed on his/her ability to demonstrate the development of course outcomes. The methods of assessment may include one or more of the following: oral or written examinations, quizzes, written assignments, visual inspection, welding task performance, safe work habits and work relations.

COURSE CONTENT:

Function safely in the PCC Welding Laboratory

• Understand and practice personal safety by using proper protective gear

• Understand and practice power tool safety

• Understand and practice equipment safety

• Understand and maintain a safe work area

• Understand and practice fire prevention

• Access and explain the importance of Material Safety Data Sheets (MSDS)

Demonstrate professional work ethics

• Track training hours on time card

• Perform projects in accordance to specifications and procedures

• Follow directions in a positive manner

• Manage time productively

• Respect equipment and others

• Demonstrate skill in problem solving and decision making

Apply math and science concepts related to GMAW-P

• Demonstrate the ability to solve formulas

• Apply math order of operation rules

• Explain the purpose of Pulsing with GMAW

• Identify the types of shielding gases used for Pulsed GMAW

• Explain plasma formation in the Arc

• Explain the use of Diatomic and Tri-atomic Gases with Argon or Helium

• Explain stabilizing the Arc for GMAW of steel

• Explain when to use Argon-Helium vs. Ar-CO2 vs. Ar-O2 shielding gases

• Identify the oxidation potential of Argon rich gas mixtures

• Compare pulsed GMAW of Steel vs. Aluminum

• Explain synergic system power sources and waveform control

• Understand the principles of GMAW-P transfer.

  • Terminology
  • Variables
  • Equipment
  • Shielding gas
  • Welding specifications

Interpret drawing and symbols to accurately layout, prepare and assemble weld joints

• Interpret lines, symbols and verbiage on project drawing

• Layout material per drawing specification

• Use the oxy-fuel cutting to cut material to specified dimensions

• Grind metal to meet specifications

• Assemble weld project per specification

Weld common joints in all positions using the GMAW-Pulse transfer on mild steel.

• Horizontal position

  • T - Joint

  • Lap Joint

• Vertical position

  • T - Joint

  • Lap Joint

• Overhead position

  • T - Joint

  • Lap Joint

Weld common joints to Code Quality using GMAW – Pulse transfer on aluminum.

• Horizontal position

  • T - Joint

  • Lap Joint

•   Vertical position

  • T - Joint

  • Lap Joint

•   Overhead position

  • T - Joint

  • Lap Joint