Hobart Welding Products OM-950 manual Lap Joints, Tee Joints, Welding Troubleshooting, Porosity

Page 32

8-9. Lap Joints

30° Or Less

30° Or Less

1Electrode

2Single-Layer Fillet Weld Move electrode in circular motion.

3Multi-Layer Fillet Weld

1

1

2

3

Single-Layer Fillet Weld

Multi-Layer Fillet Weld

Weld a second layer when a larger fillet is needed. Remove slag before making another weld pass. Weld both sides of joint for maximum strength.

S-0063 / S-0064

8-10. Tee Joints

1

45°

Or Less

2

2

1 Electrode

12 Fillet Weld

Keep arc short and move at definite rate of speed. Hold electrode as

 

shown to provide fusion into the

 

corner. Square edge of the weld

 

surface.

 

For maximum strength weld both

 

sides of upright section.

3

3 Multi-Layer Deposits

Weld a second layer or more when

 

 

a larger fillet is needed. Use any of

 

the weaving patterns shown in Sec-

 

tion 8-7. Remove slag before mak-

 

ing another weld pass.

 

S-0069 / S-0058-A / S-0061

B. Welding Troubleshooting

Table 6-1. Porosity

Porosity − small cavities or holes resulting from gas pockets in weld metal.

Possible Causes

Corrective Actions

 

 

 

 

Arc length too long.

Reduce arc length.

 

 

Damp electrode.

Use dry electrode.

 

 

Workpiece dirty.

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

 

welding.

 

 

OM-950 Page 28

 

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Contents Processes DescriptionFrom Hobart to You Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Indique un message de sécurité particulier UNE Décharge Électrique peut entraîner la mortLES Fumées ET LES GAZ peuvent être dangereux LE Soudage peut provoquer un Incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaquesManufacturer’s Rating Labels Symbols And Definitions− Definitions − Installation SpecificationsAC/DC Models AC ModelsDuty Cycle Charts For AC/DC ModelsFor 235/160A Models For AC ModelsVolt-Ampere Curves Selecting a Location For AC Models For 235A ModelsInstalling Electrode Holder And Work Clamp Installing Electrode Cable and BarrelHolder or work clamp Onto Electrode HolderElectrical Service Guide Weld Output Cables50/60 Hz Input Voltage 230 Input Amperes At Rated OutputConnecting Input Power Out input power before instal=GND/PE Earth Groundbe sure to supply correct in- put power Disconnect and lockout/tag− Operation ControlsControls For AC/DC Models For DC Weld OutputControls For AC Models − Maintenance & Troubleshooting Routine MaintenanceLubricating Shunt Block And Anti-Noise Adjustment MonthsReinstalling Amperage Adjustment Indicator Troubleshooting Trouble RemedyCircuit Diagram For AC/DC 230 Volts Models Circuit Diagram For AC 230 Volts Models− Welding Methods & Troubleshooting Welding Methods Shielded Metal Arc Welding Smaw ProcedureElectrode And Amperage Selection Chart 6013 7014Striking An Arc Positioning The Electrode HolderWeld Bead Characteristics Conditions That Affect Weld Bead ShapeElectrode Angle Arc LengthElectrode Movement During Welding Butt JointsWelding Troubleshooting Lap JointsTee Joints PorosityLack Of Penetration Excessive SpatterIncomplete Fusion Excessive Penetration Burn-ThroughWaviness Of Bead DistortionStart Your Professional Welding Career Now − Parts List Main Assembly AC/DC model illustratedMain Assembly Page Assistance ServiceSupport Contact your Distributor for Hobart Welding Products

OM-950 specifications

Hobart Welding Products has been a respected name in the welding industry, providing high-quality equipment and solutions for a wide range of welding applications. One of their notable offerings is the Hobart OM-950, a powerful and versatile MIG welder designed to meet the needs of both professionals and hobbyists alike.

The Hobart OM-950 is engineered for optimal performance and user-friendly operation. This machine stands out due to its robust construction, capable of withstanding the rigors of industrial environments while remaining portable enough for at-home use. With a maximum output of 950 amps, it is well-suited for various welding jobs, from thin sheets of metal to heavier gauge materials.

One of the main features of the OM-950 is its advanced inverter technology which allows for a lightweight and compact design without sacrificing power. This technology not only enhances portability but also improves energy efficiency, resulting in lower operational costs. The machine is designed to operate on both 230V and 460V input power, making it versatile for different work settings.

Another key characteristic of the OM-950 is its impressive duty cycle. With a 60% duty cycle at 950 amps, users can engage in extended welding operations without the risk of overheating. This is particularly advantageous during long projects where consistent performance is crucial.

The OM-950 also includes a user-adjustable output range, allowing for precise control over the welding process, which is essential for achieving clean and professional results. The welder incorporates a digital display that provides real-time feedback on settings and performance, ensuring that operators can easily make necessary adjustments on the fly.

Additionally, the Hobart OM-950 features a spool gun capable of handling aluminum and other non-ferrous materials, which expands its usability across various welding applications. The machine's built-in safety features, such as thermal overload protection, further enhance its reliability and ease of use.

With its combination of power, versatility, and user-friendly features, the Hobart Welding Products OM-950 is an excellent choice for those looking for a high-performance MIG welder that can tackle diverse welding tasks efficiently and effectively. Whether for professional use or home projects, this machine delivers on quality and innovation, making it a preferred choice among welders.
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