Hobart Welding Products OM-947 manual Troubleshooting − Lack Of Penetration

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9-12. Troubleshooting − Lack Of Penetration

 

 

 

Lack Of Penetration − shallow

 

 

 

fusion between weld metal and

 

 

 

 

 

 

base metal.

Lack of Penetration

Good Penetration

 

 

 

S-0638

Possible Causes

Corrective Actions

Improper joint preparation.

Material too thick. Joint preparation and design must provide access to bottom of groove while

 

 

 

maintaining proper welding wire extension and arc characteristics.

Improper weld technique.

Maintain normal gun angle of 0 to 15 degrees to achieve maximum penetration.

 

Keep arc on leading edge of weld puddle.

 

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

Insufficient heat input.

Select higher wire feed speed and/or select higher voltage range.

 

Reduce travel speed.

9-13. Troubleshooting − Incomplete Fusion

Incomplete Fusion − failure of weld metal to fuse completely with base metal or a preceeding weld bead.

 

S-0637

 

 

Possible Causes

Corrective Actions

 

 

Workpiece dirty.

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

 

welding.

 

 

Insufficient heat input.

Select higher voltage range and/or adjust wire feed speed.

 

 

Improper welding technique.

Place stringer bead in proper location(s) at joint during welding.

 

 

 

Adjust work angle or widen groove to access bottom during welding.

 

 

 

Momentarily hold arc on groove side walls when using weaving technique.

 

 

 

Keep arc on leading edge of weld puddle.

 

 

 

Use correct gun angle of 0 to 15 degrees.

 

 

9-14. Troubleshooting − Burn-Through

Burn-Through − weld metal melting completely through base metal resulting in holes where no metal remains.

S-0640

Possible Causes

Corrective Actions

 

 

Excessive heat input.

Select lower voltage range and reduce wire feed speed.

 

 

 

Increase and/or maintain steady travel speed.

 

 

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Contents Processes DescriptionFile Flux Cored Fcaw From Hobart to You Protect Your InvestmentTable of Contents Warranty Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can burnWelding can cause fire or explosion Fumes and Gases can be hazardousARC Rays can burn eyes and skin Flying Metal or Dirt can injure eyesFalling Equipment can injure Welding Wire can injureFire or Explosion hazard Moving Parts can injureEMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings About Implanted Medical DevicesSymboles utilisés UNE Décharge Électrique peut entraîner la mortLES Pièces Chaudes peuvent provoquer des brûlures LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un incendie ou une explosion Risque D’INCENDIE OU LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées LA Chute DE L’ÉQUIPEMENT peut provoquer des blessuresLES Fils DE Soudage peuvent provoquer des blessures Proposition californienne 65 AvertissementsLes Pièces Mobiles peuvent causer des blessures LE Soudage À L’ARC risque de provoquer des interférencesPrincipales normes de sécurité Informations relatives aux CEMEn ce qui concerne les implants médicaux OM-947 Specifications − SpecificationsSymbols And Definitions − DefinitionsDuty Cycle And Overheating Volt-Ampere Curves− Installation Installing Work ClampTools Needed Slide insulating grips over handles OM-947 Process/Polarity Table Changing PolarityInstalling Gas Supply Tools Needed 11/16, 1-1/8 Shielding GasInstalling Wire Spool And Adjusting Hub Tension Tools NeededSerial Number And Rating Label Location 460 mmInstalling Contact Tip And Nozzle Turn off welding power sourceThreading Welding Wire Operating The Gun − OperationControls LoadOM-947 Weld Parameter Chart 210 Overload Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Drive Motor ProtectionChanging Drive Roll Or Wire Inlet Guide Turn Off power before replacing contact tip Replacing Gun Contact TipCleaning Gun Liner Replacing Gun Liner Head Mm / 10 mm TubeLoosen liner setscrew 10 mm Power source see Section Troubleshooting TableSecure power cord plug in receptacle see Section Trouble Remedy− Electrical Diagram Circuit Diagram− Wire Welding Guidelines Typical Fcaw Process ConnectionsTypical MIG Process Connections Amperage Typical Control SettingsWire Size Amperage Range Select VoltageHolding And Positioning Welding Gun Groove WeldsConditions That Affect Weld Bead Shape Short Normal LongSlow Normal Fast Poor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Troubleshooting − Waviness Of Bead Troubleshooting − DistortionTroubleshooting Guide For Semiautomatic Welding Equipment − Parts List Main AssemblyOptional Pkg 195 157R− See Table Pkg195 Hub Kit For 8 in Wire Spool 209Weatherproof Nylon Work like a Pro Page Page Service SupportAssistance Contact your Distributor for Hobart Welding Products

OM-947 specifications

Hobart Welding Products has made a significant mark in the welding industry with its cutting-edge equipment, and the Hobart OM-947 is no exception. This multi-process welder stands out for its versatility and user-friendly design, ideal for both beginners and experienced welders alike.

One of the main features of the OM-947 is its multi-process capability, allowing users to perform MIG, TIG, and stick welding, all in one machine. This flexibility makes it an appealing choice for diverse welding applications, whether in automotive repair, metal fabrication, or industrial maintenance. The OM-947 can easily switch between processes, ensuring efficiency and convenience in various tasks.

The machine is engineered with advanced technology that enhances welding performance. Its inverter technology provides a stable arc and reduces energy consumption, which not only cuts down operational costs but also improves the welder's overall performance. The Hobart OM-947 boasts a high-duty cycle, allowing users to operate it for extended periods without overheating, making it suitable for professional environments.

In terms of characteristics, the OM-947 features a digital display that allows for precise control over welding parameters. This user-friendly interface simplifies the adjustment process, enabling welders to focus more on their craft rather than struggling with complex settings. The machine also comes with a built-in automatic voltage control, which adjusts the voltage according to the chosen process and material thickness, ensuring optimal welding conditions and reducing the risk of defects.

Another notable aspect of the OM-947 is its portability. Weighing in at a manageable level, coupled with a compact design, the machine is easy to transport between job sites, making it ideal for mobile welders. Furthermore, the rugged construction of the unit ensures durability even in demanding environments.

Safety features are paramount in welding equipment, and the Hobart OM-947 does not disappoint. It includes a thermal overload protection system that prevents overheating and potential damage to the welder, offering peace of mind during use.

Overall, the Hobart Welding Products OM-947 delivers impressive performance, versatility, and user-friendliness. It is designed for welders who demand quality and reliability from their equipment while being accessible enough for those who are just starting their welding journey. With its innovative features and robust design, the OM-947 truly sets a benchmark in the world of welding.
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