Hobart Champion 4500 manual Stick Welding Smaw Guidelines, Stick Welding Procedure

Page 34

SECTION 11 – STICK WELDING (SMAW) GUIDELINES

11-1. Stick Welding Procedure

Y Weld current starts when electrode touches work- piece.

1 7

YWeld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible.

1 Workpiece

Make sure workpiece is clean be- fore welding.

2Work Clamp

3Electrode

A small diameter electrode requires less current than a large one. Fol- low electrode manufacturer’s instructions when setting weld am- perage (see Section 11-2).

4Insulated Electrode Holder

5Electrode Holder Position

6Arc Length

Arc length is the distance from the electrode to the workpiece. A short arc with correct amperage will give a sharp, crackling sound.

7 Slag

Use a chipping hammer and wire brush to remove slag. Remove slag and check weld bead before mak- ing another weld pass.

Tools Needed:

stick 12/96 – ST-151 593

OM-4418 Page 30

Image 34

Contents Processes OM-4418210 597ADescription From Hobart to You Table of Contents Page Electric Shock can kill Marks a special safety messageArc Welding Hazards Fumes and Gases can be hazardousEngine Hazards Compressed Air Hazards Principal Safety Standards EMF InformationUN Choc Électrique peut tuer Signification des symbolesConsignes DE Sécurité Lire Avant Utilisation LES Fumées ET LES GAZ peuvent être dangereuxDES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux LE Bruit peut affecter l’ouïeLA Chaleur DU Moteur peut pro- voquer un incendie ’EXPLOSION DE LA Batterie peutDES Organes Mobiles peuvent provoquer des blessures ’AIR Comprimé peut provoquer des blessuresPrincipales normes de sécurité Information sur les champs électromagnétiquesWeld, Power, And Engine Specifications SpecificationsSymbol Definitions Dimensions, Weights, And Operating AnglesDuty Cycle Exceeding duty cycle can damage unit and void warrantyFuel Consumption 100% Duty Cycle at 90 Amperes CC/ACGenerator Power Curve Volt-Ampere CurvesInstalling Welding Generator InstallationGrounding Generator To Truck Or Trailer Frame 13 mm Full Gasoline Open Closed Grounding Generator When Supplying Building SystemsEngine Prestart Checks Oil45 m 60 m 70 m 90 m 105 m 120 m Connecting To Weld Output TerminalsSelecting Weld Cable Sizes Put terminalsOperating the Welding Generator Controls See SectionDescription Of Controls See Section To Stop turn engine switch to OffAmperage Selection Table For Stick Smaw Electrodes Use GFCI-protected extension cord Generator Power Panel ReceptaclesOperating Auxiliary Equipment 240 V 20 a AC Duplex Receptacle RC1Maintenance Washing Precleaner Servicing Air CleanerClean element by gently tapping on a hard surface Stop engineGenerator Power TroubleshootingTroubleshooting WeldingEngine With proper viscosity oil for operating temperatureStarting difficult Electrical Diagrams Circuit Diagram For Welding GeneratorGenerator Power Guidelines Selecting EquipmentEarth ground if supplying Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Amperes x Volts = WattsIndustrial Motors Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsSingle-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP x 1000 = Starting AmperageTypical Connections To Supply Standby Power Work like a ProSelecting Extension Cord Use Shortest Cord Possible Current Load Watts AmperesWeld current starts when electrode touches work- piece Stick Welding ProcedureStick Welding Smaw Guidelines Striking an Arc Scratch Start Technique Electrode and Amperage Selection ChartStriking an Arc Tapping Technique Positioning Electrode Holder Poor Weld Bead CharacteristicsGood Weld Bead Characteristics 10-30 9090 End View of Work AngleConditions That Affect Weld Bead Shape Electrode Movement During WeldingTee Joint Butt JointsLap Joint 16 in 30 1.6 mm Tack WeldsWeld Test Troubleshooting PorosityTroubleshooting Excessive Spatter Possible Causes Corrective ActionsTroubleshooting Lack Of Penetration Troubleshooting Incomplete FusionTroubleshooting Excessive Penetration Troubleshooting Waviness Of Bead Troubleshooting Burn-ThroughTroubleshooting Distortion Parts List 35 36Dia Part Description Quantity Mkgs Work like a Pro Page Page Service SupportContact your Distributor for Hobart Welding Products