Gas Metal Arc Welding
AWS Sense Guidelines
1. Perform safety inspections of equipment and accessories.
2. Make minor external repairs to equipment and accessories.
3. Set up for gas metal arc welding operations on plain carbon steel.
4. Operate gas metal arc welding equipment.
Short Circuiting Transfer
5. Make fillet welds, all positions, on plain carbon steel.
6. Make groove welds in all positions on carbon steel.
Spray Transfer
7. Make 1F and 2F welds on plain carbon steel.
8. Make 1G welds on plain carbon steel.
9. Describe gas metal arc welding-pulse theory.
2. Make minor external repairs to equipment and accessories.
3. Set up for gas metal arc welding operations on plain carbon steel.
4. Operate gas metal arc welding equipment.
Short Circuiting Transfer
5. Make fillet welds, all positions, on plain carbon steel.
6. Make groove welds in all positions on carbon steel.
Spray Transfer
7. Make 1F and 2F welds on plain carbon steel.
8. Make 1G welds on plain carbon steel.
9. Describe gas metal arc welding-pulse theory.
Welding Principles and Applications
Chapter 10 Equipment, Setup, and Operation
Objectives:
1. List the various terms used to describe gas metal arc welding.
2. Discuss the various methods of metal transfer including the axial spray metal transfer process, globular transfer, pulsed-arc metal transfer, buried-arc transfer, and short-circuiting transfer GMAW-S.
3. List shielding gases used for short-circuiting, spray, and pulsed-arc transfer.
4. Describe the more commonly used GMA welding filler metals.
5. Describe the more commonly used GMA welding filler metals.
6. Define deposition efficiency, and tell how a welder can control the deposition rate.
7. Define voltage, electrical potential, amperage, and electrical current is related to GMA welding.
8. Tell how wire-feed speed is determined and what it affects.
9. Discuss how the GMAW molten weld pool can be controlled by varying the shielding gas, power settings, weave pattern, travel speed, electrode extension, and gun angle.
10. Describe the backhand and forehand welding technique.
11. List and describe the basic GMAW equipment.
12. Explain how the arc spot weld produced by GMAW differs from electric resistance spot welding and the advantages of GMA spot welding.
1. List the various terms used to describe gas metal arc welding.
2. Discuss the various methods of metal transfer including the axial spray metal transfer process, globular transfer, pulsed-arc metal transfer, buried-arc transfer, and short-circuiting transfer GMAW-S.
3. List shielding gases used for short-circuiting, spray, and pulsed-arc transfer.
4. Describe the more commonly used GMA welding filler metals.
5. Describe the more commonly used GMA welding filler metals.
6. Define deposition efficiency, and tell how a welder can control the deposition rate.
7. Define voltage, electrical potential, amperage, and electrical current is related to GMA welding.
8. Tell how wire-feed speed is determined and what it affects.
9. Discuss how the GMAW molten weld pool can be controlled by varying the shielding gas, power settings, weave pattern, travel speed, electrode extension, and gun angle.
10. Describe the backhand and forehand welding technique.
11. List and describe the basic GMAW equipment.
12. Explain how the arc spot weld produced by GMAW differs from electric resistance spot welding and the advantages of GMA spot welding.
Chapter 11 Gas Metal Arc Welding
Objectives:
1. Demonstrate how to properly set up a GMA welding installation.
2. Demonstrate how to thread the electrode wire on a GMAW machine.
3. Demonstrate how to set the shielding gas flow rate on a GMAW machine.
4. Use various settings on a GMA welding machine, and compare the effects of the weld.
5. Show the effect of changing the electrode extension on a weld.
6. Describe the effects of changing the welding gun angle on a weld bead.
7. Tell what must be considered when selecting the right shielding gas for a particular application.
8. Evaluate weld beads made with various shielding gas mixtures.
9. Tell why hot-rolled steel should be cleaned to a bright metal before welding.
10. Demonstrate how to properly make GMA welds in butt joints, lap joints, and tee joints in all positions that can pass the specified standard.
1. Demonstrate how to properly set up a GMA welding installation.
2. Demonstrate how to thread the electrode wire on a GMAW machine.
3. Demonstrate how to set the shielding gas flow rate on a GMAW machine.
4. Use various settings on a GMA welding machine, and compare the effects of the weld.
5. Show the effect of changing the electrode extension on a weld.
6. Describe the effects of changing the welding gun angle on a weld bead.
7. Tell what must be considered when selecting the right shielding gas for a particular application.
8. Evaluate weld beads made with various shielding gas mixtures.
9. Tell why hot-rolled steel should be cleaned to a bright metal before welding.
10. Demonstrate how to properly make GMA welds in butt joints, lap joints, and tee joints in all positions that can pass the specified standard.