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Hobart Welding Products OM-227 978B Conditions That Affect Weld Bead Shape, Push, Slow Normal

Models: OM-227 978B

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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°
			. Use a Drag Technique
	Perpendicular	Drag	with self-shielding flux
	Perpendicular	Drag	cored wire.
			cored wire.

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

OM-227 978 Page 33

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Hobart Welding Products OM-227 978B Conditions That Affect Weld Bead Shape, Push, Perpendicular Drag, Short Normal Long

Contents

Processes OM-227 978BDescription 2007−04From Hobart to You Table of Contents − MIG Welding Gmaw Guidelines − Parts ListTypical 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 − DefinitionsVolt-Ampere Curves Duty Cycle And OverheatingAmperes OutputInstalling Welding Gun − InstallationInstalling Work Clamp Changing Polarity Process/Polarity TableInstalling Gas Supply Selecting a Location And Connecting Input Power Installing Wire Spool And Adjusting Hub Tension Electrical Service GuideTools Needed Installing Contact Tip And Nozzle Appropriate setting Connecting Optional Spool GunThreading Welding Wire Controls − OperationWeld Parameter Chart For 230 VAC Model 227 949-B Routine Maintenance − Maintenance &TROUBLESHOOTINGOverload Protection Drive Motor Protection MonthsTurn Off power before replacing contact tip Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip 030/.035 Groove Stamped 023/.025 Groove Stamped .030/.035Disconnect gun from unit Cleaning Or Replacing Gun LinerTo Reassemble Gun Replacing Switch And/Or Head Tube Trouble Remedy Troubleshooting TableOM-227 978 Circuit Diagram − Electrical Diagram227 951-B Typical MIG Process Connections − MIG Welding Gmaw GuidelinesWire Size Amperage Range Typical MIG Process Control SettingsThickness to Amperage a AmperageHolding 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 BeadCommon MIG Shielding Gases Weld beadTroubleshooting Guide For Semiautomatic Welding Equipment OM-227 978 Main Assembly − Parts ListDia Part Dia Part Mkgs Description Quantity 231 H-14 GunOptions Optional Drive RollsConsumables Page Work like a Pro Support ServiceAssistance Hobart Welding Products Contact your Distributor for