Hobart Welding Products 210 MVP 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)

Recommend that stickout be ⅜ in. ( mm) for solid wire and ½ in. for flux cored wire.

Short

Normal

Long

FILLET WELD ELECTODE EXTENSIONS (STICKOUT)

Slow

Normal

Fast

GUN TRAVEL SPEED

S-0634

OM-249 498 Page 39

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Contents File MIG Gmaw OM-249 498BProcesses DescriptionProtect Your Investment From Hobart to YouTable of Contents Warranty HOT Parts can burn 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 injure Welding Wire can injureFire or Explosion hazard Falling Equipment can injureAbout Implanted Medical Devices Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationUNE Décharge Électrique peut entraîner la mort Symboles utilisésLES Fumées ET LES GAZ peuvent être dangereux LES Pièces Chaudes peuvent provoquer des brûluresLE Soudage peut provoquer un incendie ou une explosion LA Chute DE L’ÉQUIPEMENT peut provoquer des blessures LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées Risque D’INCENDIE OULE Soudage À L’ARC risque de provoquer des interférences Proposition californienne 65 AvertissementsLes Pièces Mobiles peuvent causer des blessures LES Fils DE Soudage peuvent provoquer des blessuresInformations relatives aux CEM Principales normes de sécuritéEn ce qui concerne les implants médicaux OM-249 498 I1eff Symbols And Definitions− Definitions I1maxSpecifications For 230 VAC − SpecificationsSpecifications For 115 VAC Overheating Duty Cycle And Overheating30% duty cycle at 150 amps Minutes Welding 20% duty cycle at 90 amps Minutes WeldingVoltage Amperage Volt-Ampere CurvesInstalling Nozzle, Contact Tip, And Adapter − InstallationInstalling Welding Gun Installing Work Clamp Process/Polarity Table Turn off welding power sourceChanging Polarity After flow is set, close pressure assembly Installing Gas SupplyTools Needed 1-1/8 Extension Cord Data Use Shortest Cord Possible Electrical Service GuideMulti−Voltage Plug MVP Connection Serial Number And Rating Label Location Selecting a Location And Connecting Input PowerDo not move or operate Unit where it could tip Do Not modify or rewire receptacle ConnectionYellow InstallationLocal Codes − have only Qualified Persons MakeConnecting 1-Phase Input Power For 115 VAC Input Installing 8 in mm Wire Spool Installing Wire Spool And Adjusting Hub TensionWire Feed Speed Control Connecting Optional Spool GunExposed O-rings Threading Welding Wire Controls − OperationWeld Parameter Chart Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionStamped Changing Drive Roll Or Wire Inlet Guide023/.025 030/.035 Groove Knurled SmoothRemove nozzle, contact tip, and adapter Blow out gun casing Nozzle Contact Tip Tip Adapter Head TubeStickout Tools Needed Mm, 10 mm Replacing Switch And/Or Head Tube Trouble Remedy Troubleshooting TableCircuit Diagram − Electrical Diagram249 315-A Gun Workpiece Work Clamp Regulator Flowmeter Shielding Gas Wire Feeder Power Source− MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsWire Size Amperage Range Typical MIG Process Control SettingsSelect Voltage Groove Welds Holding And Positioning Welding GunShort Normal Long Conditions That Affect Weld Bead ShapePush Perpendicular DragGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Direction Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Base metal to moveCommon MIG Shielding Gases Troubleshooting Guide For Semiautomatic Welding EquipmentApplication Drive rolls if necessary Welding arc not stable Wire slipping in drive rollsReadjust welding parameters Welding power source57 58 − Parts List49 32 Dia Part Description Quantity Optional 245 H100S4-10 GunOptions Optional Drive RollsConsumables Support ServiceAssistance Hobart Welding Products Contact your Distributor for