Welding Processes: GMAW, GTAW and SMAW
Build conceptual understanding of common arc-welding processes, equipment, consumables, joint preparation, heat input and the quality controls used around welded fabrication.
Work context
Metal joining
This page shows technical knowledge coverage. Course, assessment and credential availability depends on the applicable Industrial Skillset program.
Relevant roles
Welders · Fabricators · Welding inspectors · Manufacturing engineers
Prerequisites
Metalworking safety · Engineering drawings
Knowledge level
Intermediate coverage with practical workplace context.
Learning outcomes
What this topic is intended to help you understand
- Differentiate GMAW/MIG, GTAW/TIG and SMAW processes.
- Identify the major equipment and consumables for each.
- Recognize common weld discontinuities and the importance of qualified procedures.
Technical scope
Equipment, processes and terminology
- Power sources
- Electrodes and filler wire
- Shielding gas
- Polarity
- Joint design
- Travel speed
- Heat input
- Preheat concepts
- Weld profiles
Workplace practice
How the subject connects to industrial work
- Joint cleanliness
- Consumable control
- Following approved parameters
- Visual examination awareness
Quality and safety
Controls that protect people, product and process
- Arc radiation
- Fume control
- Fire prevention
- Hot-work controls
- WPS compliance
Technical learning supports understanding. Actual work remains governed by site procedures, machine-specific instructions, engineering requirements, supervision and authorization.
Industrial documents
Documents commonly connected to this subject
- Welding procedure specification
- Welder qualification record
- Fabrication drawing
- Inspection report