Hobart Welding Products 175, OM-944 196 639G manual Conditions That Affect Weld Bead Shape

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8-4. 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)

ShortNormalLong

FILLET WELD ELECTODE EXTENSIONS (STICKOUT)

Slow	Normal	Fast
	GUN TRAVEL SPEED

S-0634

OM-944 Page 34

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Contents Description OM-944Processes From Hobart to You Table of Contents Options and Accessories Warranty Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Identifie un message de sécurité particulier − Consignes DE Sécurité − À Lire Avant UtilisationLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LE Bruit peut affecter l’ouïe’EMPLOI Excessif peut Faire Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser LES Pièces Mobiles peuvent cau- ser des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques VAC Model − SpecificationsSpecifications Duty Cycle % Duty Cycle And OverheatingOutput Output AmperesVolt-Ampere Curves Load Amps− Installation Installing Welding Gun Installing Work ClampProcess/Polarity Table Changing PolarityInstalling Gas Supply Rating Label Do not move or operate unit where it could tip = GND/PEElectrical Service Guide For 230 VAC Model Installing Wire Spool And Adjusting Hub TensionThreading Welding Wire Hold wire tightly to keep it from unraveling− Operation ControlsWeld Parameter Chart For 115 VAC Model Welding GuideFor 115 Volt Wire Welding Package Weld Parameter Chart For 230 VAC Model For 230 Volt Wire Welding Package Disconnect power before maintaining − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload Protection Drive Motor ProtectionReplacing Gun Contact Tip Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip To Reassemble Gun Cleaning Or Replacing Gun LinerDisconnect gun from unit Replacing Switch And/Or Head Tube Troubleshooting Table Trouble Remedy− Electrical Diagram Circuit Diagram For 115 VAC ModelCircuit Diagram For 230 VAC Model − MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsThickness to Amperage a Typical MIG Process Control SettingsWire Size Amperage Range Select VoltageHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Gun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective ActionsTroubleshooting − Burn-Through Troubleshooting − Lack Of PenetrationTroubleshooting − Incomplete Fusion Troubleshooting − Waviness Of Bead Troubleshooting − DistortionApplication Troubleshooting Guide For Semiautomatic Welding EquipmentCommon MIG Shielding Gases Welding arc not stable Wire slipping in drive rolls Return To Table Of Contents − Parts List Main AssemblyDia Part H-10 Gun 195 Optional Drive RollsOptions Page Service SupportContact your Distributor for Hobart Welding Products