Hobart Welding Products OM-947 Typical Control Settings, Wire Size Amperage Range, Select Voltage

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9-3. Typical Control Settings

.These settings are guidelines only. Material and wire type, joint design, fitup, position, shielding gas, etc. affect settings. Test welds to be sure they comply to specifications.

Material thickness determines weld

 

parameters.

 

1/8 or 0.125 in

Convert Material

 

Thickness to

 

Amperage (A)

 

(0.001 in = 1 ampere)

 

0.125 in = 125 A

.035 in

Wire Size

Amperage Range

 

 

 

 

0.023 in

 

30 − 90 A

0.030 in

40 − 145 A

0.035 in

50 − 180 A

 

 

 

 

 

 

 

 

 

 

 

 

Select Wire Size

 

 

Wire

Recommendation

 

Wire Speed

Select Wire Speed

 

 

Size

 

(Approx.)

(Amperage)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.023 in

3.5 in per ampere

3.5 x 125 A = 437 ipm

125 A based on 1/8 in

 

 

0.030 in

2 in per ampere

2 x 125 A = 250 ipm

material thickness

 

 

0.035 in

1.6 in per ampere

1.6 x 125 A = 200 ipm

 

 

 

 

 

 

 

 

 

 

 

ipm = inches per minute

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low voltage: wire stubs into work

Select Voltage

 

 

 

High voltage: arc is unstable (spatter)

 

 

 

 

 

 

 

Set voltage midway between high/low voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wire speed (amperage) controls weld penetration (wire speed = burn-off rate)

Voltage controls height and width of weld bead.

Ref. 803 441-C

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Contents Description ProcessesFile Flux Cored Fcaw Protect Your Investment From Hobart to YouTable of Contents Warranty Arc Welding Hazards Symbol UsageElectric Shock can kill HOT Parts can burnARC Rays can burn eyes and skin Fumes and Gases can be hazardousWelding can cause fire or explosion Flying Metal or Dirt can injure eyesFire or Explosion hazard Welding Wire can injureFalling Equipment can injure Moving Parts can injureCalifornia Proposition 65 Warnings Principal Safety StandardsEMF Information About Implanted Medical DevicesUNE Décharge Électrique peut entraîner la mort Symboles utilisésLES Fumées ET LES GAZ peuvent être dangereux LES Pièces Chaudes peuvent provoquer des brûluresLE Soudage peut provoquer un incendie ou une explosion LES Bouteilles peuvent exploser si elles sont endommagées LE Bruit peut endommager l’ouïeRisque D’INCENDIE OU LA Chute DE L’ÉQUIPEMENT peut provoquer des blessuresLes Pièces Mobiles peuvent causer des blessures Proposition californienne 65 AvertissementsLES Fils DE Soudage peuvent provoquer des blessures LE Soudage À L’ARC risque de provoquer des interférencesInformations relatives aux CEM Principales normes de sécuritéEn ce qui concerne les implants médicaux OM-947 Symbols And Definitions − SpecificationsSpecifications − DefinitionsVolt-Ampere Curves Duty Cycle And OverheatingInstalling Work Clamp − InstallationTools Needed Slide insulating grips over handles OM-947 Changing Polarity Process/Polarity TableTools Needed 11/16, 1-1/8 Shielding Gas Installing Gas SupplyTools Needed Installing Wire Spool And Adjusting Hub Tension460 mm Serial Number And Rating Label LocationTurn off welding power source Installing Contact Tip And NozzleThreading Welding Wire Controls − OperationOperating The Gun LoadOM-947 Weld Parameter Chart 210 Routine Maintenance − Maintenance &TROUBLESHOOTINGOverload Protection Drive Motor ProtectionChanging Drive Roll Or Wire Inlet Guide Replacing Gun Contact Tip Turn Off power before replacing contact tipCleaning Gun Liner Head Mm / 10 mm Tube Replacing Gun LinerLoosen liner setscrew 10 mm Secure power cord plug in receptacle see Section Troubleshooting TablePower source see Section Trouble RemedyCircuit Diagram − Electrical DiagramTypical Fcaw Process Connections − Wire Welding GuidelinesTypical MIG Process Connections Wire Size Amperage Range Typical Control SettingsAmperage Select VoltageGroove Welds Holding And Positioning Welding GunShort Normal Long Conditions That Affect Weld Bead ShapeSlow Normal Fast Good Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Porosity Troubleshooting − Excessive SpatterTroubleshooting − Excessive Penetration Possible Causes Corrective ActionsTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Troubleshooting − Distortion Troubleshooting − Waviness Of BeadTroubleshooting Guide For Semiautomatic Welding Equipment Main Assembly − Parts ListOptional − See Table 195 157RPkg Pkg209 195 Hub Kit For 8 in Wire SpoolWeatherproof Nylon Work like a Pro Page Page Support ServiceAssistance Hobart Welding Products Contact your Distributor for

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.

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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.

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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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