Hobart Welding Products 150, 120 manual Troubleshooting Excessive Spatter, Troubleshooting Porosity

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7-8.

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.

7-9.

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.

7-10. 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.

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Contents Description OM-210 088DProcesses From Hobart to You Table of Contents Page 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 killPrincipal Safety Standards EMF Information About PacemakersUN Choc É Lectrique peut tuer Signification des symbolesConsignes DE Securite Lire Avant Utilisation LES Fumé ES ET LES GAZ peuvent ê tre dangereuxLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux ’EMPLOI Excessif peut Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sé curitéInformation sur les champs é lectromagné tiques VAC Model SpecificationsSpecifications Overheating Duty Cycle And Overheating30%dutycycle at 90 amps Minutes Welding Reduce Duty Cycle MinutesVolt-Ampere Curves Changing Polarity InstallationInstalling Welding Gun Process/Polarity TableInstalling Gas Supply Flow Adjust460 mm L2 L1 230 VAC Do not move or operate unit Where it could tip18 in 457 mm of space for airflow Standard Wire Spool 8 Lb Wire Spool 4 Electrical Service Guide For 230 VAC ModelInstalling Wire Spool And Adjusting Hub Tension Adjusting Hub TensionRemove gun nozzle and contact tip Threading Welding WireCut off wire. Close and latch door Operation Voltage SwitchPower Switch ControlsWeld Parameters For 120 VAC Model Weld Parameters For 230 VAC Model Disconnect power before maintaining Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionReplacing Gun Contact Tip Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip To Reassemble Gun Cleaning Or Replacing Piecemaker 14-A Gun LinerDisconnect gun from unit Trouble Remedy Troubleshooting TableSecure power cord plug in receptacle see Section OM-210 088 Electrical Diagram OM-187 926Circuit Diagram For 120 VAC CSA Model Circuit Diagram For 230 VAC Model Typical MIG Process Connections Regulator Flowmeter Wire Feeder Power Source Shielding GasMIG Welding Gmaw Guidelines Gun Workpiece Work ClampSelect Wire Size Typical MIG Process Control SettingsWire Recommendation Wire Speed Select VoltageHolding And Positioning Welding Gun Short Normal Long Conditions That Affect Weld Bead ShapePush PerpendicularDrag ShortNormalLongGun 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 Weld bead Troubleshooting Waviness Of BeadTroubleshooting Distortion Flat & Horizontal1 Fillet Common MIG Shielding GasesApplication Parts List Main AssemblyDia Part Mkgs Description Quantity Gun And Cable Assembly, Piecemaker 14-A 379 177 177282A-9 177282A-6 024 H 379 177282A-7379 177 177282A-8 379 177 177282A-10 024 H 177282A-11202 Optional Drive RollsOptions For One Small Gas CylinderService SupportCall Contact your Distributor forHobart Welding Products

120, 150 specifications

Hobart Welding Products has long been recognized for delivering high-quality welding solutions, and the Hobart 150,120 welder is no exception. This versatile, compact welder is designed to meet the needs of both hobbyists and professionals alike, making it a popular choice among welders in various industries.

One of the main features of the Hobart 150,120 is its dual voltage capability. It operates on both 120V and 240V power sources, providing users the flexibility to work in a variety of environments, whether at home or in a professional shop setting. This feature makes it particularly appealing for welding enthusiasts who may not always have access to higher voltage outlets.

The welder is equipped with a robust 30-140 amp output range, allowing users to tackle a wide range of welding tasks. This output capability supports a variety of materials, including mild steel, stainless steel, and aluminum, with thicknesses up to 1/4 inch. Whether you're working on auto repair, fabrication projects, or DIY tasks around the house, the Hobart 150,120 is well-suited for the job.

Another significant advantage of the Hobart 150,120 is its user-friendly design. The welder features an easy-to-read control panel that allows users to adjust the settings conveniently. The intuitive parameters ensure that both beginners and experienced welders can quickly achieve optimal results. Additionally, it incorporates a built-in thermal overload protection feature to prevent overheating, enhancing safety during operation.

In terms of technology, the Hobart 150,120 utilizes a MIG welding process that simplifies the welding experience. This process feeds a continuously welding wire through the welding gun, reducing the need for frequent reloading and ensuring a smooth, consistent weld. The inclusion of a gas solenoid also enables users to switch between gas-shielded and flux-cored wire, providing versatility for different applications.

Lastly, the compact design of the Hobart 150,120 makes it portable and easy to store, which is particularly advantageous for users with limited workspace. With its combination of robust features, advanced technologies, and user-friendly operation, the Hobart 150,120 welder stands out as an excellent choice for anyone looking to achieve high-quality welds with efficiency and ease. It firmly establishes Hobart Welding Products as a leader in the welding market.
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