Portland Community College | Portland, Oregon

Course Number:
WLD 132
Course Title:
Gas Metal Arc Welding-Pulse
Credit Hours:
4
Lecture Hours:
0
Lecture/Lab Hours:
80
Lab Hours:
0
Special Fee:
$24.00

Course Description

Develops knowledge and skills using the gas metal arc welding - pulse transfer process on common mild steel and aluminum joints in all positions. Prerequisites: Department permission required. Audit available.

Addendum to Course Description

This is an outcome based course utilizing a lecture/lab format. This course includes classroom discussion, videos, theoretical concepts, lab demonstrations and technical skills. Course outcomes include; theoretical concepts, lay out, fabrication, oxy-fuel cutting, and safety.

Intended Outcomes for the course

Upon completion of the course students should be able to:

  • Function safely in the PCC Welding Lab.
  • Interpret blueprints to accurately lay out, prepare, and assemble weld joints.
  • Understand and apply fundamentals of GMAW-pulse operations.
  • Weld common joint assemblies with the GMAW-pulse to AWS D1.1 Structural Steel Welding Code visual acceptance criteria in the following joints and positions.
  • Apply visual examination principles and practices in accordance with AWS D1.1.

Course Activities and Design

Welding lec/lab courses are Open Entry and Open Exit (OE/OE) and are offered concurrently. Courses are designed to meet the needs of the students with flexible scheduling options.  Students may attend full time or part time. This is an OE/OE course which does not align with the normal academic calendar.

Outcome Assessment Strategies

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 and welding task performance.

Course Content (Themes, Concepts, Issues and Skills)

Function safely in the PCC Welding Lab.

  • Understand and practice personal safety by using proper protective gear
  • Understand and practice power tool safety
  • Understand and maintain a safe work area
    • Recognize and report dangerous electrical and air/gas hose connections
    • Understand and practice fire prevention

Interpret blueprints to accurately lay out, prepare, and assemble weld joints.

  • Interpret lines, symbols, views and notes
  • Lay out material per specifications
  • Assemble project per specifications

 Understand and apply fundamentals of GMAW-P Operations.

  • Describe and demonstrate equipment setup, shut down, and operation
  • Identify pulse transfer characteristics 
  • Demonstrate proper stick out and travel speed
  • Demonstrate correct starting, stopping and restarting techniques
  • Demonstrate proper bead placement

Weld common joint assemblies with the GMAW-P to AWS D1.1 Structural Steel Welding Code visual acceptance criteria in the following joints and positions:

 Flat Position: (mild steel)

  • Bead plate

Horizontal Position:  (mild steel and Aluminum)

  • T-Joint
  • Lap Joint

Vertical Position:   (mild steel and Aluminum)

  • T-Joint  
  • Lap Joint

Overhead Position:

  • T-Joint
  • Lap Joint

Apply visual and destructive examination principles and practices in accordance with AWS D1.1.

  • Evaluate welds using appropriate welding inspection tools
  • Assess weld discontinuities causes and corrections