What Is Gas Metal Arc Welding? (01:47)
MIG welding (GMAW or gas metal arc welding) is an arc welding process that joins metals by heating them with an arc. The arc is between a continuously fed filler metal (consumable) electrode and the workpiece.
Components of a Gas Metal Arc Welding System (03:41)
A MIG welder uses direct current. MIG with shielding gas usually done in DCRP mode. The majority of MIG power sources are rated at a 60% duty cycle. The MIG electrode is a copper coated metal alloy wire. Components include the electrode gun and ground cla
Safe Welding Environment and Protective Equipment (02:58)
Always inspect the welding area for obstacles or slippery areas. Viewers learn how to create a safe welding environment. Protective equipment includes personal protective equipment (PPE), and clothing designed to protect the welder completely.
Types of Metal Transfer (02:01)
When using MIG systems, several transfer modes are available. These modes include short circuit, and globular. Modes depend on voltage, wire speed, arc length, and shielding gas.
Setting Up a GMAW System for Use (03:13)
Setting up a GMAW system must be done methodically and in the right sequence. Follow along with the step-by-step process as it is explained and demonstrated.
Laying a Bead (03:41)
A quality weld means good penetration of welding joint, proper tie-in to other beads, and minimal defects that will pass code. Follow step-by-step instructions and demonstrations from striking the arc, laying the bead, and restarting the weld.
Reading the Bead (02:26)
A welder must know how to manipulate the rod to produce a quality weld. A quality MIG weld means minimal defects, proper tie-in to other beads, and good penetration. Viewers learn how to correct poor beads.
Advanced Welding Techniques & Conclusion (02:37)
Advanced welding techniques include knowing how to weld the five basic joint types and their variations. MIG applications include the butt joint, edge joint, corner, lap, and "T" joint. To join metals secure the pieces firmly together in their intended la
Credits: Gas Metal Arc Welding (GMAW) (00:35)
Credits: Gas Metal Arc Welding (GMAW)
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