Hobart Welding Products OM-925 Conditions That Affect Weld Bead Shape, Push Perpendicular Drag

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9-4. Conditions That Affect Weld Bead Shape

.Weld bead shape depends on gun angle, direction of travel, electrode extension (stickout), travel speed, thickness of base metal, wire feed speed (weld current), and voltage.

10°

Push

10°

Perpendicular

Drag

GUN ANGLES AND WELD BEAD PROFILES

Short

Normal

Long

ELECTRODE EXTENSIONS (STICKOUT)

Short

Normal

Long

FILLET WELD ELECTODE EXTENSIONS (STICKOUT)

Slow

Normal

Fast

 

GUN TRAVEL SPEED

S-0634

 

 

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Contents OM-925217 694E 2008−10 Arc Welding Power Source Wire FeederProcesses DescriptionProtect Your Investment From Hobart to YouTable of Contents − ACCESSORIES/CONSUMABLES HOT Parts can cause severe burns Symbol UsageArc Welding Hazards Electric Shock can killFlying Metal or Dirt can injure eyes Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosionMoving Parts can cause injury Welding Wire can cause injuryFire or Explosion hazard Falling Unit can cause injuryAbout Implanted Medical Devices Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationSymboles utilisés UNE Décharge Électrique peut entraîner la mortIndique des instructions spécifiques DES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in cendie ou une explosion LA Chute DE L’APPAREIL peut blesser LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées Risque D’INCENDIE OU D’EXPLO- SionProposition californienne 65 Avertissements LES Fils DE Soudage peuvent provoquer des blessuresLE Soudage À L’ARC risque de provoquer des interférences Principales normes de sécurité Information EMFEn ce qui concerne les implants médicaux OM-925 − Definitions − SpecificationsSymbols And Definitions SpecificationsCan damage unit or gun and void WarrantyDuty Cycle And Overheating Output Duty Cycle %10.0 100 110 120 130 140 150 160 Volt-Ampere CurvesVoltage 15.0Be sure that gun end is tight against drive assembly − InstallationInstalling Welding Gun Installing Work ClampChanging Polarity Process/Polarity TableDo not use Argon/Mixed gas regulator/flowmeter Installing Gas SupplyFeedhead Pressure Assembly Open Feedhead Pressure Assembly ClosedDo not move or operate unit Where it could tip Selecting a Location And Connecting Input PowerInstalling Wire Spool And Adjusting Hub Tension Align locking hole in spool with locking pin on spool hubRetaining ring used with 8 in 203 mm spool only Installing Contact Tip And Nozzle Turn off welding power sourceUse with solid or flux cored wire Threading Welding Wire Hold wire tightly to keep it from unravelingLay gun cable out straight Desired drive roll pressure. Start With a setting of 2 or 3 on the scalePressure Indicator Scale TightenSource or -2. Do not switch under load − OperationControls Material Thickness Reference Chart Weld Parameter Chart 217 618-A Drive Motor Protection − Maintenance & TroubleshootingRoutine Maintenance Overload ProtectionStamped Stamped .030/.035 Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip Replacing Gun Contact TipCleaning Or Replacing Gun Liner Disconnect gun from unitTo Reassemble Gun Replacing Switch And/Or Head Tube Trouble Remedy Troubleshooting TableCircuit Diagram − Electrical DiagramRegulator Flowmeter Wire Feeder Power Source Shielding Gas− MIG Welding Gmaw Guidelines Typical MIG Process Connections125 in = 125 a Typical MIG Process Control SettingsWire Size Amperage Range 001 in = 1 ampereGroove Welds Holding And Positioning Welding GunSlow Normal Fast Conditions That Affect Weld Bead ShapePush Perpendicular Drag Short Normal LongPoor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Direction Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Base metal to moveTroubleshooting Guide For Semiautomatic Welding Equipment Common MIG Shielding GasesApplication Drive rolls if necessary Welding arc not stable Wire slipping in drive rollsReadjust welding parameters Welding power sourceConsumables − ACCESSORIES/CONSUMABLESAccessories Replacement Drive RollsService SupportAssistance Hobart Welding Products Contact your Distributor for
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