powered by
Center for Curriculum and Transfer Articulation
Introduction to SMAW
Course: WLD106AA

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

Description: Introduction to arc welding with emphasis in Shielded Metal Arc Welding (SMAW). Designed to provide the knowledge and skills needed to cut and prepare weld joints utilizing current technology. Develops hands-on skills through sequenced lab experiences.

MCCCD Official Course Competencies
1. Adhere to industry safety regulations applicable to welding environments. (I)
2. Identify the various types of welding power supplies used in industry. (II)
3. Demonstrate proficient use of machines, tools and equipment in welding and cutting processes. (III)
4. Identify four basic types of carbon steel and steel alloys. (IV)
5. Identify the common physical properties of materials and their uses. (IV)
6. Use the appropriate type of electrodes to weld. (V)
7. Utilize applicable welding procedures to set up various joint types. (VI)
8. Utilize applicable welding procedures to weld various joint types. (VII)
9. Perform basic inspection of welding quality. (VIII)
10. Using basic quality inspection, repair weld discontinuities according to industry standards. (VIII)
11. Describe various certifications and the test methods in the welding industry. (IX)
12. Identify the challenges and employment opportunities within the field of welding. (X)
13. Demonstrate personal accountability. (XI)
14. Document work according to industry standards. (XII)
MCCCD Official Course Outline
I. Safety
   A. Personal protective equipment
   B. Workplace environment
II. Power supply
   A. Type of current
      1. Alternating current/direct current (AC/DC)
      2. DC electrode negative/DC electrode positive
   B. Generator
   C. Transformer
   D. Transformer-rectifier
   E. Inverters
III. Machines, tools, and equipment for cutting and welding
   A. Oxyfuel cutting
   B. Plasma arc cutting
   C. Carbon arc gouging
   D. Mechanical cutting/grinding
IV. Metals
   A. Types
      1. Low-carbon steel
      2. Medium-carbon steel
      3. High-carbon steel
      4. Alloy steels
   B. Physical and mechanical properties
V. Electrodes
   A. Type of rod
   B. Classification
   C. Coating types
   D. Diameter
   E. Storage
   F. Positions
VI. Weld preparation
   A. Size and shape
   B. Types of joints
   C. Fit-up
   D. Edge preparations
   E. Metal thickness
   F. Preheat
VII. Performing the weld
   A. Key points
      1. Arc length
      2. Speed of travel
      3. Volume of heat
      4. Angle of rod
      5. Rate of cooling
   B. Arc striking
      1. Scratching
      2. Tapping
   C. Beads
      1. Stringer
      2. Weave
   D. Welding techniques
VIII. Weld quality
   A. Industry standards
   B. Penetration
   C. Fusion
   D. Multi-passes
   E. Weld bead profile
   F. Weld discontinuities
      1. Undercut
      2. Slag inclusions
      3. Porosity
      4. Incomplete fusion
      5. Incomplete penetration
      6. Arc strikes
      7. Cracks
   G. Repairing welds
      1. Identification of discontinuity
      2. Preparation
      3. Process performance
IX. Testing and certification
   A. Code requirements
      1. Positions
      2. Joint setup
      3. Destructive test methods
      4. Non-destructive test methods
X. Employment challenges and opportunities
   A. Manufacturing
   B. Construction
XI. Accountability
   A. Ethics
   B. Professionalism
XII. 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.