MIG Welding Gmaw Guidelines | Hobart Welding Products 250 guide

SECTION 6 − MIG WELDING (GMAW) GUIDELINES

6-1. Typical MIG Process Connections

Regulator/

Flowmeter

Shielding

Gas

Supply

Wire Feeder/

GasPower Source

Hose

YWeld 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.

Gun

Work Clamp

Workpiece

light mig 5/967 / Ref. 802 285-D

OM-192 440 Page 30

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Hobart Welding Products 250 installation instructions MIG Welding Gmaw Guidelines, Typical MIG Process Connections

Contents

Description OM-192 440WProcesses File MIG Gmaw From Hobart to You Table of Contents Warranty Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can kill Flying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or kill California 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 unIncendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures graves ’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessures Principales normes de sécurité En ce qui concerne les stimulateurs cardiaques Exceeding duty cycle can damage unit and void warranty SpecificationsWelding Power Source Duty Cycle And Overheating Overheating Volt-Ampere Curves Welding Gun Duty Cycle And OverheatingDefinition Installing Welding Gun Connecting To Weld Output Terminals Installing Work Clamp Setting Gun Polarity For Wire Type Installing Wire Spool And Adjusting Hub Tension Installing Gas Supply Rear Panel Positioning Jumper Links Volts Input Voltage Electrical Service GuideHz Single Min Grounding Conductor Size In AWG Selecting a Location And Connecting Input Power Threading Welding Wire Wood Turn Off unit, and disconnect input power Operation Connecting Spool Gun To Welding Power Source Turn Off unit − Operation Controls Weld Parameters Voltage switch positionWhile welding Example 2/40 = To read settingsNumber on left of slash Supplementary Protectors Routine MaintenanceDisconnect power before maintaining Months Turn Off power Replacing Drive Roll And Wire Inlet GuideRemoving Knob From Front Panel Turn Off power before replacing contact tip Replacing Gun Contact Tip Turn off welding power source/wire feeder Wire size stamped on tip − check and match wire size Replacing Switch And/Or Head Tube Wire Drive/Gun Trouble Remedy Welding Troubleshooting TableWire Drive/Gun Troubleshooting Table Welding Trouble Remedy − MIG Welding Gmaw Guidelines Typical MIG Process Connections Thickness to Amperage a Typical MIG Process Control SettingsWire Size Amperage Range Amperage Holding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Good Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective Actions Troubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Troubleshooting − Waviness Of Bead Troubleshooting − Distortion Common MIG Shielding Gases Troubleshooting Guide For Semiautomatic Welding EquipmentWire does not feed Application Welding arc not stable Wire slipping in drive rolls OM-192 440 − Electrical Diagram − Parts List REGULATOR/FLOWMETER, 10−50 CFH ARGON/CO2 Center Baffle w/Components Center Baffle w/Components -1Item Rear Panel w/Components Front Panel w/Components M-25 Gun Optional Spool Gun Switch Description RemarksPage Support ServiceAssistance Contact your Distributor for Hobart Welding Products