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Center for Curriculum and Transfer Articulation
Advanced GTAW Non-Ferrous
Course: WLD206AC

First Term: 2020 Fall
 Lec + Lab   5.0 Credit(s)   8.0 Period(s)   8.0 Load  
Subject Type: Occupational
Load Formula: T - Lab Load


Description: Instruction and practice of gas tungsten arc welding (GTAW) aluminum sheet in the flat, horizontal, and vertical positions. Prepare for industry code performance qualification tests in any welding position.



MCCCD Official Course Competencies
1. Adhere to industry safety regulations applicable to welding environments. (I)
2. Demonstrate proficient use of power sources, tools, and equipment in welding and cutting processes. (I-V)
3. Utilize applicable welding procedures to set up various joint types on aluminum using the GTAW process. (II, III)
4. Perform welder qualification testing in any position. (II, III)
5. Repair weld discontinuities per industry standards. (II-IV)
6. Interpret technical drawings and welding symbols. (II-V)
7. Create acceptable performance qualification test coupon(s). (II-V)
8. Use visual inspection techniques to assure weld quality. (IV)
9. Identify challenges and employment opportunities within the field of welding. (VI)
10. Demonstrate professional knowledge and personal accountability. (VII)
11. Document work according to industry standards. (VIII)
MCCCD Official Course Competencies must be coordinated with the content outline so that each major point in the outline serves one or more competencies. MCCCD faculty retains authority in determining the pedagogical approach, methodology, content sequencing, and assessment metrics for student work. Please see individual course syllabi for additional information, including specific course requirements.
 
MCCCD Official Course Outline
I. Safety
   A. Personal protective equipment
   B. Workplace environment
   C. Power sources, tools, and equipment for cutting and welding
II. Welding procedures and setup for industry code performance qualification
   A. Welding procedure
   B. Equipment setup
      1. Power source
         a. Alternating current (AC)
         b. Amperage
         c. AC balance
         d. Wave frequency
      2. Auxiliary equipment
         a. Torch components
         b. Current controls
         c. Gas distribution
   C. Weldment fit-up
      1. Base metal selection
      2. Base metal cleaning
      3. Base metal preparation
      4. Inspection
III. Gas tungsten arc welding
   A. Tungsten selection
      1. Type
      2. Size
   B. Position of weld coupon
      1. 1G flat
      2. 2G horizontal
      3. 3G vertical
   C. Welding procedure and technique
      1. Length of arc
      2. Work and lead angles
      3. Travel speed
      4. Heat settings and torch manipulation
   D. Filler material
      1. Classification/type
      2. Size
   E. Shielding gas
      1. Type (argon, helium)
      2. Flow rate
IV. Weld inspection
   A. Weld quality compliance
   B. Weld size
   C. Proper location
   D. Weld repair procedures
V. Industry testing methods
   A. Non-destructive testing
   B. Destructive testing
VI. Employment challenges and opportunities
   A. Manufacturing
   B. Construction
   C. Nuclear
   D. Aerospace
   E. Maintenance
VII. Accountability
   A. Ethics
   B. Professionalism
VIII. Work documentation
   A. Welding procedure specification (WPS)
   B. Welder performance qualification record (WPQR)
 
MCCCD Governing Board Approval Date: December 10, 2019

All information published is subject to change without notice. Every effort has been made to ensure the accuracy of information presented, but based on the dynamic nature of the curricular process, course and program information is subject to change in order to reflect the most current information available.