Hobart Welding Products 140 Conditions That Affect Weld Bead Shape, Push, Perpendicular Drag

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9-4. Conditions That Affect Weld Bead Shape

NOTE

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 Processes OM-925Description From Hobart to You Table of Contents − MIG Welding Gmaw Guidelines − ACCESSORIES/CONSUMABLESTypical MIG Process Connections Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique un message de sécurité particulier DES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut endommager l’ouïeLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresEn ce qui concerne les stimulateurs cardiaques Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphoneSymbols And Definitions − SpecificationsSpecifications − DefinitionsDuty Cycle And Overheating WarrantyOutput Duty Cycle % Exceeding duty cycle canVoltage Volt-Ampere Curves15.0 10.0 100 110 120 130 140 150 160Installing Welding Gun − InstallationInstalling Work Clamp Drive assembly. Tighten thumbscrewChanging Polarity Process/Polarity TableCO2 gas regulator/flowmeter Installing Gas SupplyDo not move or operate unit Where it could tip Selecting a Location And Connecting Input PowerAlign locking hole in spool with locking pin on spool hub Installing Wire Spool And Adjusting Hub TensionTurn off welding power source Installing Contact Tip And NozzleUse with solid or flux cored wire Lay gun cable out straight Threading Welding WireTighten Pressure Indicator Scale− Operation Source or -2. Do not switch under loadControls Material Thickness Reference Chart Weld Parameter Chart 217 618-A Routine Maintenance − Maintenance & TroubleshootingDisconnect power Overload Protection Drive Motor ProtectionTurn Off power before replacing contact tip Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Tools Needed 030/.035 GrooveDisconnect gun from unit Cleaning Or Replacing Gun LinerTo Reassemble Gun Remove handle locking nut Secure head tube in vice Replacing Switch And/Or Head TubeSlide handle Trouble Remedy Troubleshooting TableCircuit Diagram − Electrical DiagramTypical MIG Process Connections − MIG Welding Gmaw GuidelinesWire Size Amperage Range Typical MIG Process Control SettingsThickness to Amperage a 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 necessaryAccessories − ACCESSORIES/CONSUMABLESReplacement Drive Rolls ConsumablesWork like a Pro Start Your Professional Support ServiceAssistance Hobart Welding Products Contact your Distributor for