MIG Welding Gmaw Guidelines | Hobart Welding Products 230 manual

SECTION 6 − MIG WELDING (GMAW) GUIDELINES

6-1. Typical MIG Process Connections

! Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible.

Regulator/

Flowmeter

Wire Feeder/

Power Source

Shielding Gas

Gun

Gas

Workpiece

Work Clamp

mig1_2007−05 / Ref. 801 909-A

OM-235 281 Page 31

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Hobart Welding Products 230 manual MIG Welding Gmaw Guidelines, Typical MIG Process Connections

Contents

File MIG Gmaw OM-235 281AProcesses Description Protect Your Investment From Hobart to You Table of Contents Warranty HOT Parts can burn Symbol UsageArc Welding Hazards Electric Shock can kill Flying Metal or Dirt can injure eyes Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosion Moving Parts can injure Welding Wire can injureFire or Explosion hazard Falling Equipment can injure About Implanted Medical Devices Principal Safety StandardsCalifornia Proposition 65 Warnings EMF Information UNE Décharge Électrique peut entraîner la mort Symboles utilisés LE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux LA Chute DE L’APPAREIL peut blesser LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées Risque D’INCENDIE OU D’EXPLO- Sion LE 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 40.0 35.0 30.0 25.0 20.0 15.0 10.0 100 150 200 250 300 Volt-Ampere CurvesVoltage Amperage MIG GUN Installing Welding Gun Installing Work Clamp Connecting To Weld Output Terminals Electrode Negative Dcen Setting Gun Polarity For Wire TypeInstalling 2 lb Wire Spool And Adjusting Hub Tension Changing Polarity Installing 33 lb Wire Spool And Adjusting Hub Tension Installing 10 lb Wire Spool And Adjusting Hub Tension Tools Needed 1-1/8, 5/8 Installing Gas SupplyRear Panel Positioning Jumper Links Turn off and disconnect input power Input Amperes At Rated Output Electrical Service GuideHz Single Input Voltage Conductors from unit Selecting a Location And Connecting Input PowerDo not move or operate unit where it could tip Special installation may be Threading Welding Wire Turn Off unit, and disconnect input power 3070 2080 1090 Wire Speed ControlControls Weld Parameters Selecting Wire, Gas and Control Settings Before maintaining Routine MaintenanceDisconnect power Supplementary Protectors Removing 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 Welding Trouble Remedy Welding Troubleshooting TableWire Drive/Gun Troubleshooting Table Wire Drive/Gun Trouble Remedy Typical MIG Process Connections − MIG Welding Gmaw Guidelines Select Voltage Typical MIG Process Control SettingsWire Size Amperage Range Amperage Groove Welds Holding And Positioning Welding Gun Short Normal Long Conditions That Affect Weld Bead ShapePush Perpendicular Drag Gun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive Penetration Troubleshooting − Burn-Through Troubleshooting − Lack Of PenetrationTroubleshooting − Incomplete Fusion Direction Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Base metal to move Application Troubleshooting Guide For Semiautomatic Welding EquipmentCommon MIG Shielding Gases Drive rolls if necessary Welding arc not stable Wire slipping in drive rollsReadjust welding parameters Welding power source − Electrical Diagram 10 − Fig 17 − Fig Main Assembly Item Dia Part Description Quantity Mkgs Center Baffle w/Components Center Baffle w/Components -1Item Rear Panel w/Components Front Panel w/Components 234 Wire Drive Assembly Wire Drive Assembly 237 H200L4−15 Gun Knurl Drive Roll For Hard Shell Cored Wires Accessories Assistance ServiceSupport Hobart Welding Products Contact your Distributor for