Troubleshooting Welds

Lincoln Electric IM536-D Troubleshooting Welds, To Eliminate Stubbing* in order of importance

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	LEARNING TO WELD		B-17

4.After you strike the arc, practice the correct electri- cal stickout. Learn to distinguish it by its sound.

5.When you are sure that you can hold the correct electrical stickout, with a smooth “crackling” arc, start moving. Look at the molten puddle constantly.

6.Run beads on a flat plate. Run them parallel to the top edge (the edge farthest away from you). This gives you practice in running straight welds, and also gives you an easy way to check your progress. The 10th weld will look considerably bet- ter than the first weld. By constantly checking on your mistakes and your progress, welding will soon be a matter of routine.

Good welds have excellent appearance.

To Eliminate Porosity (in order of importance):

1.Turn on gas supply, if used

2.Decrease voltage.

3.Increase stickout.

4.Increase WFS (wire feed speed).

5.Decrease drag angle.

6.Decrease travel speed.

NOTE: Always be sure the joint is free from moisture, oil, rust, paint or other contaminants.

To Eliminate a Ropy Convex Bead (in order of importance):

1. Increase voltage

2.Decrease stickout.

3.Decrease WFS (wire feed speed.

4.Decrease travel speed.

5.Decrease drag angle.

6.Check for correct gas, if used.

To Reduce Spatter (in order of importance):

1.Increase voltage.

2.Increase drag angle.

3.Decrease stickout.

4.Increase WFS (wire feed speed).

5.Decrease travel speed.

6.Check for correct gas, if used.

To Correct Poor Penetration (in order of impor- tance):

1.Decrease stickout.

2.Increase WFS (wire feed speed).

3.Increase voltage.

4.Decrease speed.

5.Decrease drag angle.

6.Check for correct gas, if used.

If Arc Blow Occurs (in order of importance):

NOTE: Try different ground connection locations before adjusting procedures.

1.Decrease drag angle.

2.Increase stickout.

3.Decrease voltage.

4.Decrease WFS (wire feed speed.

5.Decrease travel speed.

To Eliminate Stubbing* (in order of importance):

1.Increase voltage

2.Decrease WFS (wire feed speed)

3.Decrease stickout

4.Increase drag angle

*Stubbing occurs when the electrode drives through the molten puddle and hits the bottom plate tending to push the gun up.

SP-125 PLUS

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Contents

SP-125 Plus California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéPlease Examine Carton and Equipment For Damage Immediately Thank YouTable of Contents Vii Installation Identify and Locate Components Safety PrecautionsElectric Shock can kill Stacking Work Clamp InstallationWork Cable Installation Select Suitable LocationConnecting Gun Cable to the SP-125 Plus GUN InstallationGAS Connection Input Connections Gas Solenoid Inlet Fitting Power Input CableRequirements For CSA Rated Output Code Requirements for Input ConnectionsRequirements For Rated Output Requirements For Maximum OutputWelding Sparks can cause fire or explosion Observe all safety information throughout this manualOperation Fumes and Gases can be dangerousWelding Capability Controls and SettingsDesign Features Advantages General DescriptionWelding Operations Wire LoadingSequence of Operation Wire Threading Friction Brake AdjustmentsMaking a Weld Shielding GasCleaning Tip And Nozzle Changing Machine Over to Feed Other Wire SizesProcess Guidelines Thermal Protection Wire Feed Overload ProtectionOverload Protection Output OverloadSELF-SHIELDED Fcaw Welding ARC Learning to WeldLearning to Weld ARC-WELDING CircuitProcess Selection Gmaw MIG Welding ARCFor Gmaw MIG Process Butt Welds Common MetalsJoint Types and Positions For Fcaw Innershield ProcessPenetration Welding In The Vertical PositionFillet Welds Correct Welding Position Machine SET UP for the SELF-SHIELDED Fcaw ProcessWelding Techniques for the SELF- Shielded Fcaw Process Vertical-down WeldingCorrect Welding Speed Correct Electrical Stickout ESO Practice Helpful HintsWelding Techniques for the Gmaw MIG Process Machine SET UP for the Gmaw MIG ProcessFigure B.24 To Eliminate Stubbing* in order of importance Troubleshooting WeldsTo Eliminate a Ropy Convex Bead in order of importance To Correct Poor Penetration in order of impor- tanceProper Gun Handling Application Chart K586-1 Deluxe Adjustable Gas Regulator Hose Kit AccessoriesOptional Accessories K1799-1 Argon-Mixed Gas Adjustable Regulator and Hose KitInnershield Fcaw Conversion Replacement PartsRoutine and Periodic MAINTE- Nance MaintenanceMaintenance Safety Precautions Items Requiring no MaintenanceContact Tip Cable Liner Drive Roll GUN and Cable MaintenanceConfiguration of Components in Wire Feeding System For Magnum 100L GUNChanging Drive Roll Changing the Contact TIPLiner trim length for gun with red trigger Magnum 100L Changing LinerFigure D.3 SP-125 Plus GUN Handle PartsHOW to USE Troubleshooting Guide TroubleshootingProblems Possible Areas Symptoms Misadjustments Troubleshooting GuideRecommended Course of Action Feeding Problems Welding Problems SP-125 Plus Wiring DiagramsSP-125 Plus SP-125 Plus $700.00 How To Read Shop DrawingsNew Lessons in Arc Welding Need Welding Training?Precaucion Warnung

Lincoln Electric IM536-D Troubleshooting Welds, To Eliminate Stubbing* in order of importance

LEARNING TO WELD