Miller Electric XLT 135, XLT 165 Gun Movement During Welding, Poor Weld Bead Characteristics

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7-5. Gun Movement During Welding

NOTE

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 works better.

1

2

3

1Stringer Bead − Steady Movement Along Seam

2Weave Bead − Side To Side Movement Along Seam

3Weave Patterns

Use weave patterns to cover a wide area in one pass of the electrode.

S-0054-A

7-6. Poor Weld Bead Characteristics

 

1

Large Spatter Deposits

1

2

Rough, Uneven Bead

3

Slight Crater During Welding

 

 

4

Bad Overlap

 

5

Poor Penetration

2

3

4

5

S-0053-A

7-7. Good Weld Bead Characteristics

 

 

 

1

Fine Spatter

 

 

 

2

Uniform Bead

 

 

1

3

Moderate Crater During

 

 

 

 

Welding

 

 

 

Weld a new bead or layer for each

 

 

 

1/8 in (3.2 mm) thickness in metals

 

 

 

being welded.

 

 

 

4

No Overlap

 

 

 

5

Good Penetration into Base

2

3

4

 

Metal

 

 

5

S-0052-B

OM-198 076 Page 33

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Contents Processes OM-198 076ADescription AprilPage Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killPrincipal Safety Standards About Pacemakers EMF Information− Consignes DE Securite − Lire Avant Utilisation Signification des symbolesUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionDES Pièces Chaudes peuvent pro- voquer des brûlures graves LE Bruit peut affecter l’ouïeLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresInformation sur les champs électromagnétiques Principales normes de sécuritéConsignes relatives aux stimulateurs cardiaques Specifications − SpecificationsVAC Model Output Duty Cycle % Duty Cycle And OverheatingOutput Amperes OverheatingVolt-Ampere Curves Installing Welding Gun Installing Work Clamp − InstallationChanging Polarity Process/Polarity TableFlow Adjust Installing Gas SupplyCO2 Adapter Customer Sup- plied Regulator/flowmeter and CO2 cylinder CO2 GasGrounded Receptacle Rating LabelVolt, 20 ampere individual Up to 200 ft 61 mPlug Do not move or operate unit where it could tipReceptacle See SectionInstalling Wire Spool And Adjusting Hub Tension Electrical Service Guide For 230 VAC ModelStandard Wire Spool 8 Lb Wire Spool 4 Adjusting Hub TensionThreading Welding Wire Power Switch OM-198 076 Voltage Switch− Operation ControlsWeld Parameters For 115 VAC Model Weld Parameters For 230 VAC Model Routine Maintenance − Maintenance &TROUBLESHOOTINGOverload Protection Drive Motor ProtectionTurn Off power before replacing contact tip Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Disconnect gun from unit Cleaning Or Replacing Gun LinerTo Reassemble Gun Replacing Switch And/Or Head Tube Trouble Remedy Troubleshooting TableDoes not run Circuit Diagram For 115 VAC Model − Electrical DiagramCircuit Diagram For 230 VAC Model Typical MIG Process Connections − MIG Welding Gmaw GuidelinesWire Size Amperage Range Typical MIG Process Control SettingsSelect Wire Size Recommendation Wire Speed Select VoltageHolding And Positioning Welding Gun Push Perpendicular Drag Conditions That Affect Weld Bead ShapeShort Normal Long ShortNormalLongGood 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 BeadBase metal to move DirectionApplication Common MIG Shielding GasesFlat & Horizontal1 Fillet Main Assembly − Parts ListDia Part Description Quantity Mkgs Gun 024 .6 and .030/.035 .8 042024 .6 and .045 Page Warranty Owner’s Record