Hobart Welders Handler 187 - Page 4

TABLE OF CONTENTS
SECTION 9 − MIG WELDING (GMAW) GUIDELINES 32............................................
9-1. Typical MIG Process Connections 32......................................................
9-2. Typical MIG Process Control Settings 33....................................................
9-3. Holding And Positioning Welding Gun 34....................................................
9-4. Conditions That Affect Weld Bead Shape 35.................................................
9-5. Gun Movement During Welding 36.........................................................
9-6. Poor Weld Bead Characteristics 36........................................................
9-7. Good Weld Bead Characteristics 36........................................................
9-8. Troubleshooting − Excessive Spatter 37....................................................
9-9. Troubleshooting − Porosity 37.............................................................
9-10. Troubleshooting − Excessive Penetration 37.................................................
9-11. Troubleshooting − Lack Of Penetration 38...................................................
9-12. Troubleshooting − Incomplete Fusion 38....................................................
9-13. Troubleshooting − Burn-Through 38........................................................
9-14. Troubleshooting − Waviness Of Bead 39....................................................
9-15. Troubleshooting − Distortion 39............................................................
9-16. Common MIG Shielding Gases 40.........................................................
9-17. Troubleshooting Guide For Semiautomatic Welding Equipment 40...............................
SECTION 10 − PARTS LIST 42..................................................................
WARRANTY