Hobart Welding Products M-10, 210 Troubleshooting − Excessive Spatter, Troubleshooting − Porosity

Page 39

6-8.

Troubleshooting − Excessive Spatter

 

 

Excessive Spatter − scattering of molten metal particles that

 

 

cool to solid form near weld bead.

 

 

S-0636

 

Possible Causes

Corrective Actions

Wire feed speed too high.

Select lower wire feed speed.

Voltage too high.

Select lower voltage range.

Electrode extension (stickout) too long.

Use shorter electrode extension (stickout).

Workpiece dirty.

Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before welding.

Insufficient shielding gas at welding arc.

Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc.

Dirty welding wire.

Use clean, dry welding wire.

 

 

Eliminate pickup of oil or lubricant on welding wire from feeder or liner.

6-9.

Troubleshooting − Porosity

 

 

Porosity − small cavities or holes resulting from gas pockets

 

 

in weld metal.

 

 

S-0635

 

Possible Causes

Corrective Actions

Insufficient shielding gas at welding arc.

Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc.

 

 

Remove spatter from gun nozzle.

 

 

Check gas hoses for leaks.

 

 

Place nozzle 1/4 to 1/2 in (6-13 mm) from workpiece.

 

 

Hold gun near bead at end of weld until molten metal solidifies.

Wrong gas.

Use welding grade shielding gas; change to different gas.

Dirty welding wire.

Use clean, dry welding wire.

 

 

Eliminate pick up of oil or lubricant on welding wire from feeder or liner.

Workpiece dirty.

Remove all grease, oil, moisture, rust, paint, coatings, and dirt from work surface before welding.

 

 

Use a more highly deoxidizing welding wire (contact supplier).

Welding wire extends too far out of nozzle.

Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.

6-10.

Troubleshooting − Excessive Penetration

 

 

Excessive Penetration − weld metal melting through base metal

 

 

and hanging underneath weld.

 

Excessive Penetration Good Penetration

 

 

S-0639

 

Possible Causes

Corrective Actions

Excessive heat input.

Select lower voltage range and reduce wire feed speed.

 

 

Increase travel speed.

 

 

OM-927 Page 35

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Contents Processes DescriptionFile MIG Gmaw From Hobart to You Table of Contents Warranty Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéOverheating SpecificationsWelding Power Source Duty Cycle And Overheating Exceeding duty cycle can damage unit and void warrantyWelding Gun Duty Cycle And Overheating Volt-Ampere CurvesDefinition Installing Welding Gun Installing Work Clamp Cable Connecting To Weld Output TerminalsSetting Gun Polarity For Wire Type Rear Panel Installing Gas SupplyInstalling Wire Spool And Adjusting Hub Tension Turn Off unit, and disconnect input powerChanging Input Voltage Electrical Service Guide Hz SingleInput Voltage Selecting a Location And Connecting Input Power Hold wire tightly to keep it from unraveling Threading Welding WireOperation Installing Optional Spool Gun Switch In Welding Power SourceTurn Off unit Connecting Spool Gun To Welding Power SourceControls − OperationWeld Parameters Selecting Wire, Gas and Control SettingsTo read settings Number on left of slashIs voltage,numberon Months Routine MaintenanceDisconnect power before maintaining Supplementary ProtectorsReplacing Drive Roll And Wire Inlet Guide Turn Off powerRemoving Knob From Front Panel Replacing Gun Contact Tip Turn Off power before replacing contact tipCleaning Or Replacing Gun Liner Disconnect gun from unitTo Reassemble Gun Disconnect gun first Replacing Switch And/Or Head TubeWelding Trouble Remedy Welding Troubleshooting TableWire Drive/Gun Troubleshooting Table Wire Drive/Gun Trouble RemedyTypical MIG Process Connections − MIG Welding Gmaw GuidelinesAmperage Typical MIG Process Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Poor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Troubleshooting − Distortion Troubleshooting − Waviness Of BeadApplication Troubleshooting Guide For Semiautomatic Welding EquipmentWire does not feed Common MIG Shielding GasesWelding arc not stable Wire slipping in drive rolls OM-927 − 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-10 Gun Accessories Optional Spool Gun SwitchPage Service SupportAssistance Hobart Welding Products Contact your Distributor for
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