Miller Electric OM-1313 manual MIG Welding Gmaw Guidelines, Typical MIG Process Connections

Page 25

SECTION 6 – MIG WELDING (GMAW) GUIDELINES

6-1. Typical MIG Process Connections

Shielding

Gas

Regulator/ Flowmeter

Gas

Y Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible.

Wire Feeder/

Power Source

Gun

Work Clamp

Workpiece

light mig 5/967 / Ref. 801 909 / Ref. 801 570-B

OM-1313 Page 21

Image 25

Contents Visit our website at Arc Welding Power Source Wire FeederSeptember MIG Gmaw Welding Flux Cored Fcaw WeldingFrom Miller to You Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards OM-1313ARC Rays can burn eyes and skin Fire or Explosion hazard Principal Safety StandardsAbout Pacemakers EMF InformationSpecifications InstallationVolt-Ampere Curves Exceeding duty cycle can damage unit and void warranty Welding Power Source Duty Cycle And OverheatingWelding Gun Duty Cycle And Overheating OverheatingInstalling Gas Supply Installing Work ClampSetting Gun Polarity Installing Welding GunPolarity Changeover Label Tools Needed 11/16Turn Off unit, and disconnect input power Installing Wire Spool And Adjusting Hub TensionReinstall wrapper Tools Needed 7/16 Changing Input VoltageSelecting a Location And Connecting Input Power Electrical Service GuideInput Voltage Min Grounding Conductor Size In AWG/KcmilThreading Welding Wire OM-1313 Front Panel Controls OperationControls For Standard Units Higher e.g Volts AC Lower e.g Volts AC Weld Parameter ChartOM-1313 Routine Maintenance Maintenance & TroubleshootingMonths Disconnect gun first Cleaning Or Replacing Gun LinerHead Tube Remove nozzle, contact tip, and adapter Blow out gun casing Remove liner Remove handle locking nut Slide handle Replacing Switch And/Or Head TubeReplacing Gun Contact Tip TroubleshootingSee Section Circuit Diagram Electrical DiagramMIG Welding Gmaw Guidelines Wire Feeder Power Source Gun Work Clamp WorkpieceTypical MIG Process Connections Shielding Gas Regulator/ FlowmeterWire Recommendation Wire Speed Typical MIG Process Control SettingsSelect Wire Size Select VoltageHolding And Positioning Welding Gun Push Conditions That Affect Weld Bead ShapePerpendicular Drag Short Normal LongGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting Porosity Troubleshooting Excessive SpatterTroubleshooting Excessive Penetration Possible Causes Corrective ActionsTroubleshooting Incomplete Fusion Troubleshooting Lack Of PenetrationTroubleshooting Burn-Through Troubleshooting Distortion Troubleshooting Waviness Of BeadWeld bead Common MIG Shielding Gases Troubleshooting Guide For Semiautomatic Welding EquipmentApplication Readjust welding parameters Welding arc not stable Wire slipping in drive rollsWelding power source Drive rolls if necessaryOM-1313 Main Assembly Parts ListDia Part Mkgs Description Quantity Center Baffle w/Components Baffle, Center w/Components -1 Item M-15 Gun -1 Item Items IncludesPage Your distributor also gives ServiceSupport Owner’s Record