Hobart Welding Products 4500 manual Conditions That Affect Weld Bead Shape

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12-8. 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

 

 

12-9. 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 Description OM-4418210 597KProcesses From Hobart to You Table of Contents Page Symbol Usage Arc Welding HazardsElectric Shock can kill HOT Parts can cause severe burnsFumes and Gases can be hazardous Buildup of GAS can injure or killARC Rays can burn eyes and skin Welding can cause fire or explosionEngine Hazards Compressed Air HazardsWelding Wire can cause injury HOT Parts can cause burns and injuryFire or Explosion hazard Falling Unit can cause injuryPrincipal Safety Standards California Proposition 65 WarningsEMF Information Radiation can cause interferenceUN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation DES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peu- vent être dangereuxLE Soudage peut provoquer un incendie ou une explosion LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peut Rendre Aveugle DES Organes Mobiles peuvent provoquer des blessuresRisque D’INCENDIE OU D’EXPLO- Sion LA Chaleur DU Moteur peut pro- voquer un incendie’AIR Comprimé peut provoquer des blessures LE Surchauffement peut endom- mager le moteur électrique LES Fils DE Soudage peuvent provoquer des blessures’EMPLOI Excessif peut UNE Remorque QUI Bascule peut entraîner des blessuresProposition californienne 65 Avertissements Principales normes de sécuritéInformation EMF En ce qui concerne les implants médicaux− Specifications Symbol DefinitionsWeld, Power, And Engine Specifications − DefinitionsDimensions, Weights, And Operating Angles Aux Power Gal./Hr Weld Power In KWFuel Consumption Weld Amps At Rated Duty CycleGenerator Power Curve AC Power VoltsAC Power Amperes Duty CycleAC Amps Volt-Ampere CurvesVolts Max Amp Min Amp − Installation Installing Welding GeneratorRating Label Location MovementGrounding Generator When Supplying Building Systems Grounding Generator To Truck Or Trailer FrameOil Engine Prestart Checks13 mm Full Gasoline Open/On Closed/Off Connecting To Weld Output Terminals Connecting to weld Selecting Weld Cable Sizes150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 mMaterial Thickness Reference Chart − Operating the Welding Generator Controls See SectionAmperage Selection Table For Stick Smaw Electrodes To Stop turn engine switch to OffDescription Of Controls See Section Generator Power Panel Receptacles − Operating Auxiliary EquipmentUse GFCI-protected extension cord X 15 a + 240 V x 9 a = 4 kVA/KW OM-4418− Maintenance Routine MaintenanceServicing Air Cleaner Stop engine− Troubleshooting TroubleshootingGenerator Power WeldingStarting difficult With proper viscosity oil for operating temperatureEngine − Electrical Diagrams Circuit Diagram For Welding Generator− Generator Power Guidelines Selecting EquipmentGrounding When Supplying Building Systems How Much Power Does Equipment Require?Use #10 AWG or larger insulated Resistive Load Volts 115 AmpsApproximate Power Requirements For Industrial Motors Approximate Power Requirements For Farm/Home EquipmentIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsPower Required To Start Motor How Much Power Can Generator Supply?Single-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 Procedure − Stick Welding Smaw GuidelinesStriking an Arc − Tapping Technique Electrode and Amperage Selection ChartStriking an Arc − Scratch Start Technique Poor Weld Bead Characteristics Good Weld Bead CharacteristicsPositioning Electrode Holder 10-30 9090 End View of Work AngleConditions That Affect Weld Bead Shape Electrode Movement During WeldingButt Joints Lap JointTee Joint 16 in 30 1.6 mm Tack WeldsTroubleshooting − Porosity Troubleshooting − Excessive SpatterWeld 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 − Parts List Main AssemblySR1 Start Your Professional Welding Career Now Assistance ServiceSupport Contact your Distributor for Hobart Welding Products
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