Miller Electric 250 Conditions That Affect Weld Bead Shape, Electrode Movement During Welding

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15-8. Conditions That Affect Weld Bead Shape

.Weld bead shape is affected by electrode angle, arc length, travel speed, and thickness of base metal.

 

Correct Angle

Angle Too Large

Angle Too Small

10° - 30°

 

Drag

 

 

ELECTRODE ANGLE

 

 

 

Spatter

Too Short

Normal

Too Long

 

ARC LENGTH

 

Slow

Normal

Fast

 

TRAVEL SPEED

S-0061

 

 

15-9. Electrode Movement During Welding

.Normally, a single stringer bead is satisfactory for most narrow groove weld joints; however, for wide groove weld joints or bridging across gaps, a weave bead or multiple stringer beads work better.

1Stringer Bead − Steady Movement Along Seam

1

2

2

Weave Bead − Side to Side

 

Movement Along Seam

 

 

 

 

 

3

Weave Patterns

Use weave patterns to cover a wide area in one pass of the electrode. Do not let weave width exceed 2-1/2 times diameter of electrode.

3

S-0054-A

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Contents File Engine Drive OM-217 455HVisit our website at 2007−05−21From Miller to You Table of Contents 13-3 13-213-4 13-5Arc Welding Hazards Symbol UsageElectric Shock can kill HOT Parts can cause severe burnsBuildup of GAS can injure or kill Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosionCompressed Air Hazards Engine HazardsHOT Parts can cause burns and injury Welding Wire can cause injuryFire or Explosion hazard Falling Unit can cause injuryCalifornia Proposition 65 Warnings Principal Safety StandardsEMF Information Radiation can cause interference− Consignes DE Sécurité − Lire Avant Utilisation Signification des symbolesUN Choc Électrique peut tuer Indique des instructions spécifiquesLE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux DES Organes Mobiles peuvent pro voquer des blessures LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peu Risque D’INCENDIE OU D’EXPLO- Sion LA Chaleur DU Moteur peut pro- voquer un incendie’AIR Comprimé peut provoquer des blessures DES Organes Mobiles peuvent provoquer des blessures LE Surchauffement peut endom- mager le moteur électriqueLES Fils DE Soudage peuvent provoquer des blessures ’EMPLOI Excessif peutPrincipales normes de sécurité Proposition californienne 65 AvertissementsInformation EMF En ce qui concerne les implants médicauxSymbol Definitions − SpecificationsWeld, Power, and Engine Specifications − DefinitionsDimensions Dimensions, Weights, and Operating AnglesDimensions For Units With Optional Running Gear Installing Welding Generator − InstallationVehicle frame. Always connect a ground wire MountingConnecting the Battery Installing Exhaust Pipe+ − Stop engine and let coolOverview And Engine Prestart Checks Starting engine for the first time Engine Left Side Engine Right SideRun-in period first 100 hours Daily pre-start checksCorrect Installation Connecting to Weld Output TerminalsWork Weld Output Terminal Tools Needed Do not placeSelecting Weld Cable Sizes Place switch in Run position to operate most MIG equipment Engine Control Switches− Operating the Welding Generator Do not use glow plugs longer than 20 secondsWeld Output Controls Typical Settings For 7018 1/8 Electrode Typical Stick Welding Connections And Control SettingsStop engine Work Clamp Electrode HolderSet Weld Process Selector switch to Wire + Dcep position Typical MIG Welding Connections And SettingsSet Weld Process Selector switch to Wire + position Set Weld Process Selector switch to Wire − position DcenTools Needed 3/4 Work Not Used To Work Left Side View − Operating Auxiliary Equipment Generator Power ReceptaclesAt least once a month, run engine at To verify Gfci is working properlySimultaneous Weld And Power Determining Battery Charging Current − Operating Optional Battery ChargerBattery Charge Controls Battery Charge Cable Connections Minutes Battery Charging ProcedureStart Your Professional Welding Career Now Routine Maintenance − Maintenance and TroubleshootingStop engine and let cool Oil And Fuel Maintenance Label And Engine Maintenance Activities804 197-A / Ref 803 111-A / 227 Ment is not covered by the warranty Cleaner or with dirty element. EngineAir cleaner primary element can Damage when determining whetherAdjusting Fuel Solenoid Position Adjusting Engine SpeedStop screw is factory-set and should not be adjusted Checking Fuel SolenoidChecking Throttle Solenoid Adjusting Throttle Solenoid16 mm Check for non-bindingAdjusting Weld/Power Speed Making Engine Speed AdjustmentsAdjusting Idle Speed Component Panel Stop engine Overload ProtectionFuse F1 Supplementary Protector CB8Generator Power Troubleshooting TablesWelding Trouble RemedyEngine Maintenance Display ActionRecommended Spare Parts − Parts ListRecommended Spare Parts Current transformer CT1, and throttle solenoid TS1Circuit Diagram For Welding Generator − Electrical Diagrams228 719-B OM-217 455 231 607-B Run-In And Wetstacking − RUN-IN and WetstackingFuel Consumption Curves − Performance DataUS Gal./Hr IdleDuty Cycle Generator Power CurveVolts AC Amperes At 120 VoltsAC Amps Stick Mode Volt-Ampere CurvesDC Amps CC/AC Stick Mode AC Volts DC Amps MIG Mode Volt-Ampere CurveGrounding Generator To Truck Or Trailer Frame − Generator Power GuidelinesSelecting Equipment How Much Power Does Equipment Require? Grounding When Supplying Building SystemsUse ground device as stated in electrical codes Amperes x Volts = WattsApproximate Power Requirements For Farm/Home Equipment Approximate Power Requirements For Industrial MotorsIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentHow Much Power Can Generator Supply? Power Required To Start MotorSingle-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 / Volts = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible − Stick Welding Smaw Guidelines Stick Welding ProcedureWeld current starts when electrode touches work- piece Striking an Arc − Tapping Technique Electrode and Amperage Selection ChartStriking an Arc − Scratch Start Technique Good Weld Bead Characteristics Poor Weld Bead CharacteristicsPositioning Electrode Holder 10-30 9090 End View of Work AngleElectrode Movement During Welding Conditions That Affect Weld Bead ShapeLap Joint Butt JointsTee Joint 16 in 30 1.6 mm Tack WeldsTroubleshooting − Excessive Spatter Troubleshooting − PorosityWeld Test Possible Causes Corrective ActionsTroubleshooting − Excessive Penetration Troubleshooting − Incomplete FusionTroubleshooting − Lack Of Penetration Troubleshooting − Distortion Troubleshooting − Burn-ThroughTroubleshooting − Waviness Of Bead Work like a Pro Support ServiceYour distributor also gives Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s
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