Hobart Welding Products OM-945 194 047U Stick Welding Smaw Guidelines, Stick Welding Procedure

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SECTION 13 − STICK WELDING (SMAW) GUIDELINES

13-1. Stick Welding Procedure

Y Weld current starts when electrode touches work- piece.

5

4

2

3

6

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 13-2).

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

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Contents Description ProcessesFrom Hobart to You Table of Contents Table of Contents Arc Welding Hazards Symbol UsageEngine Hazards Compressed Air Hazards California Proposition 65 Warnings Principal Safety StandardsEMF Information Radiation can cause interference− Consignes DE Sécurité − 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 in- cendie ou une explosionDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïeDES Organes Mobiles peuvent provoquer des blessures ’EXPLOSION DE LA Batterie peutLA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoquer des blessuresInformation sur les champs électromagnétiques Principales normes de sécuritéSymbol Definitions − SpecificationsWeld, Power, and Engine Specifications − DefinitionsGenerator Power Curve Dimensions, Weights, and Operating AnglesDo not move or operate unit where it could tip Duty Cycle Fuel Consumption All ModelsVolt-Ampere Curves Material Thickness Reference ChartInstalling Welding Generator − InstallationEngine Prestart Checks Kohler-Powered Units Engine Prestart Checks Onan-Powered UnitsFuel OilDo not overfill battery cells Activating The Dry Charge Battery If ApplicableRead and follow all instruc ChargerInstalling Exhaust Pipe Connecting the Battery+ − Connect negative − cable lastSelecting Weld Cable Sizes Connecting to Weld Output Terminals45 m 60 m 70 m 90 m 105 m 120 m Put terminalsAmperage Selection Table For Stick Smaw Electrodes Front Panel Controls − Operating the Welding GeneratorStandard Receptacles − Operating Auxiliary EquipmentCeptacles, use Wiring Optional 240 Volt Plug Optional Generator Power Receptacles− Maintenance ONAN-POWERED Units Every 500 h Maintenance Label Onan-Powered UnitsEvery 1000 h Stop engine Servicing Air Cleaner Onan-Powered UnitsServicing Optional Spark Arrestor Onan-Powered Units Overload Protection Onan-Powered UnitsStop engine. Disconnect nega- tive − battery cable Stop engine and let coolFull Tools Needed Idle Speed Adjustment Adjusting Engine Speed Onan-Powered UnitsWeld/Power Speed Adjustment Every 20 h Routine Maintenance Kohler-Powered UnitsEvery 25 h Replace unreadable labels Maintenance Label Kohler-Powered Units Servicing Air Cleaner Kohler-Powered Units Servicing Optional Spark Arrestor Kohler-Powered Units Overload Protection Kohler-Powered Units802 339-B / S-0842 Stop engine. Reinstall wrapper Adjusting Engine Speed Kohler-Powered UnitsTroubleshooting − TroubleshootingGenerator Power WeldingEngine − Electrical Diagram Selecting Equipment − Generator Power GuidelinesGrounding Generator To Truck Or Trailer Frame How Much Power Does Equipment Require? Grounding When Supplying Building SystemsEarth ground if supplying 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 = Starting AmperageTypical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleWeld current starts when electrode touches work- piece Stick Welding Procedure− Stick Welding Smaw Guidelines Striking an Arc − Scratch Start Technique Electrode and Amperage Selection ChartStriking an Arc − Tapping Technique Good Weld Bead Characteristics Poor Weld Bead CharacteristicsPositioning Electrode Holder Electrode Movement During Welding Conditions That Affect Weld Bead ShapeLap Joint Butt JointsTee Joint Troubleshooting − Excessive Spatter Troubleshooting − PorosityWeld Test Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Excessive Penetration Troubleshooting − Waviness Of Bead Troubleshooting − Burn-ThroughTroubleshooting − Distortion OM-945 Main Assembly Onan Engine Shown − Parts ListMain Assembly Panel, Front w/Components Panel, Front w/Components -1Item Generator -1Item Support ServiceHobart Welding Products Contact your Distributor for