Hobart Welding Products 230 Conditions That Affect Weld Bead Shape, Push, Perpendicular Drag

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6-4. 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

 

 

OM-235 281 Page 34

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Contents Description OM-235 281AProcesses File MIG GmawFrom Hobart to You Protect Your InvestmentTable of Contents Warranty Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can burnWelding can cause fire or explosion Fumes and Gases can be hazardousARC Rays can burn eyes and skin Flying Metal or Dirt can injure eyesFalling Equipment can injure Welding Wire can injureFire or Explosion hazard Moving Parts can injureEMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings About Implanted Medical DevicesSymboles utilisés UNE Décharge Électrique peut entraîner la mortLE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux Risque D’INCENDIE OU D’EXPLO- Sion LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées LA Chute DE L’APPAREIL peut blesserLE Soudage À L’ARC risque de provoquer des interférences Proposition californienne 65 AvertissementsLES Fils DE Soudage peuvent provoquer des blessures En ce qui concerne les implants médicaux Principales normes de sécuritéInformation EMF OM-235 281 Overheating SpecificationsWelding Power Source Duty Cycle And Overheating Amperage Volt-Ampere CurvesVoltage 40.0 35.0 30.0 25.0 20.0 15.0 10.0 100 150 200 250 300Installing Welding Gun MIG GUNConnecting To Weld Output Terminals Installing Work ClampChanging Polarity Setting Gun Polarity For Wire TypeInstalling 2 lb Wire Spool And Adjusting Hub Tension Electrode Negative DcenInstalling 10 lb Wire Spool And Adjusting Hub Tension Installing 33 lb Wire Spool And Adjusting Hub TensionTools Needed 1-1/8, 5/8 Installing Gas SupplyRear Panel Turn off and disconnect input power Positioning Jumper LinksInput Voltage Electrical Service GuideHz Single Input Amperes At Rated OutputSpecial installation may be Selecting a Location And Connecting Input PowerDo not move or operate unit where it could tip Conductors from unitThreading Welding Wire Turn Off unit, and disconnect input power 3070 2080 1090 Wire Speed ControlControls Selecting Wire, Gas and Control Settings Weld ParametersSupplementary Protectors Routine MaintenanceDisconnect power Before maintainingRemoving Knob From Front Panel Replacing Drive Roll And Wire Inlet GuideTurn Off power Replacing Gun Contact Tip Aligning Drive Rolls and Wire GuideTurn Off power before replacing contact tip Cable Hanger Screws Tools Needed Installing Cable HangersTurn Off power before Installing cable hangers Turn off welding power source/wire feeder Wire Drive/Gun Trouble Remedy Welding Troubleshooting TableWire Drive/Gun Troubleshooting Table Welding Trouble Remedy− MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsAmperage Typical MIG Process Control SettingsWire Size Amperage Range Select VoltageHolding And Positioning Welding Gun Groove WeldsPerpendicular Drag Conditions That Affect Weld Bead ShapePush Short Normal LongGun 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 Base metal to move Troubleshooting − Waviness Of BeadTroubleshooting − Distortion DirectionApplication Troubleshooting Guide For Semiautomatic Welding EquipmentCommon MIG Shielding Gases Welding power source Welding arc not stable Wire slipping in drive rollsReadjust welding parameters Drive rolls if necessary− Electrical Diagram Main Assembly 10 − Fig 17 − FigItem Dia Part Description Quantity Mkgs Center Baffle w/Components Center Baffle w/Components -1Item Rear Panel w/Components Front Panel w/Components Wire Drive Assembly 234 Wire Drive AssemblyH200L4−15 Gun 237Accessories Knurl Drive Roll For Hard Shell Cored WiresAssistance ServiceSupport Contact your Distributor for Hobart Welding Products
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