Guidelines for Gas Metal Arc Welding (GMAW)
TABLE OF CONTENT
SECTION 1 SAFETY PRECAUTIONS – READ BEFORE USING
1-1. Symbol Usage
1-2.Arc Welding Hazards
1-3. Additional Symbols For Installation, Operation, And Maintenance
1-4. California Proposition 65 Warnings
1-5. Principal Safety Standards
1-6. EMF Information
SECTION 2 GAS METAL ARC WELDING (GMAW)
2-1.Typical GMAW Semiautomatic Setup With Constant Speed Feeder
2-2.Typical GMAW Semiautomatic Setup With Voltage-Sensing Feeder
2-3.Typical GMAW Process Control Settings
2-4. Holding And Positioning Welding Gun
2-5. Conditions That Affect Weld Bead Shape
2-6. Gun Movement During Welding
2-7. Poor Weld Bead Characteristics
2-8. Good Weld Bead Characteristics
2-9. Common GMAW Shielding Gases
SECTION 3 MODES OF GMAW TRANSFER
3-1.Short Circuit Transfer
3-2. Globular Transfer
3-3.Spray Arc Transfer
SECTION 4 GMAW WELDING TROUBLESHOOTING
4-1.Excessive Spatter
4-2.Porosity
4-3. Incomplete Fusion
4-4.Excessive Penetration
4-5.Lack Of Penetration
4-6. Burn Through
4-7.Waviness Of Bead
4-8.Distortion
