Hobart Welding Products 125 Typical Control Settings, Wire Size Amperage Range, Select Voltage

Page 35

9-3. Typical Control Settings

.These settings are guidelines only. Material and wire type, joint design, fitup, position, 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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage

controls height and

 

 

 

 

 

 

 

Wire speed (amperage) controls weld

 

 

width of weld bead.

 

 

 

 

 

 

 

penetration (wire speed = burn-off rate).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OM-947 Page 31

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Contents File Flux Cored Fcaw ProcessesDescription Protect Your Investment From Hobart to YouTable of Contents 10-2 10-1HOT Parts can burn Symbol UsageArc Welding Hazards Electric Shock can killFlying Metal or Dirt can injure eyes Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosionMoving Parts can injure Welding Wire can injureFire or Explosion hazard Falling Equipment can injureAbout Implanted Medical Devices Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationIndique des instructions spécifiques Symboles utilisésUNE Décharge Électrique peut entraîner la mort LE Soudage peut provoquer un incendie ou une explosion LES Pièces Chaudes peuvent provoquer des brûluresLES Fumées ET LES GAZ peuvent être dangereux LA Chute DE L’ÉQUIPEMENT peut provoquer des blessures LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées Risque D’INCENDIE OULE Soudage À L’ARC risque de provoquer des interférences Proposition californienne 65 AvertissementsLes Pièces Mobiles peuvent causer des blessures LES Fils DE Soudage peuvent provoquer des blessuresEn ce qui concerne les implants médicaux Principales normes de sécuritéInformations relatives aux CEM OM-947 − Definitions − SpecificationsSymbols And Definitions SpecificationsCan damage unit or gun and void WarrantyDuty Cycle And Overheating Volt-Ampere CurvesSlide insulating grips over handles Tools Needed OM-947 − InstallationInstalling Work Clamp Changing Polarity Process/Polarity TableTools Needed 11/16, 1-1/8 Shielding Gas Installing Gas SupplyOptional hub kit Installing Wire Spool And Adjusting Hub TensionOnly applies to units equipped with Section Selecting a Location And Connecting 115 Volt Input PowerMake this installation Serial Number And Rating Label LocationTurn off welding power source Installing Contact Tip And NozzleHold wire tightly to keep it from unraveling Threading Welding WireLoad − OperationControls Operating The GunWeld Parameter Chart Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionRetaining Knob Opening Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Turn Off power before replacing contact tipFrom unraveling. Secure Cleaning Gun LinerHold wire tightly to keep it Thread wire according toTube. Separate gun handle halves Remove black sleeving from end of replacement linerReplacing Gun Liner Tools Needed Head Tube Mm / 10 mm10 mm Trouble Remedy Troubleshooting TableSecure power cord plug in receptacle see Section Power source see SectionCircuit Diagram − Electrical DiagramTypical Gmaw MIG Process Connections − FCAW/GMAW Welding GuidelinesTypical Fcaw Process Connections Select Voltage Typical Control SettingsWire Size Amperage Range AmperageEnd View of Work Angle Holding And Positioning Welding GunSlow Normal Conditions That Affect Weld Bead ShapeShort Normal Long Gun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Incomplete Fusion Troubleshooting − Excessive PenetrationTroubleshooting − Lack Of Penetration Base metal to move Troubleshooting − Burn-ThroughTroubleshooting − Waviness Of Bead Troubleshooting − DistortionFillet Troubleshooting Guide For Semiautomatic Welding EquipmentCommon Gmaw MIG Shielding Gases ApplicationLoose or broken wires to gas solenoid Gas nozzle plugged Clean or replace gas nozzleOpen gas valve at cylinder and adjust flow rate Gas hose in gun and cable assemblyPkg − ACCESSORIES/CONSUMABLESAccessories ConsumablesMaterial Thickness Reference Chart Work like a Pro Assistance ServiceSupport Hobart Welding Products Contact your Distributor for
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