Lincoln Electric 4000 manual Vertical-Up Welding, Vertical-Down Welding

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B-16

OPERATION

B-16

 

 

 

Vertical-Up Welding

The problem, when welding vertical-up, is to put the molten metal where it is wanted and make it stay there. If too much molten metal is deposited, gravity will pull it downwards and make it “drip”. Therefore, a certain technique has to be followed:

Long arc

Short arc

NOTE: Holder end of electrode is lower than arc.

1.Use 1/8” (3.2mm) 90-115 amps or 3/32” (2.5mm) 70 amps AWS 6011.

2.When welding, the electrode should be kept hori- zontal or pointing slightly upwards. (See drawing above).

3.The arc is struck and metal deposited at the bot- tom of the two pieces to be welded together.

4.Before too much molten metal is deposited, the arc is SLOWLY moved 1/2-3/4” (12-20mm) upwards. This takes the heat away from the molten puddle, which solidifies. (If the arc is not taken away soon enough, too much metal will be deposited, and it will “drip”.)

5.The upward motion of the arc is caused by a very slight wrist motion. Most definitely, the arm must not move in and out, as this makes the entire process very complicated and difficult to learn.

6.If the upward motion of the arc is done correctly with a wrist motion, the arc will automatically become a long arc that deposits little or no metal. (See drawing above.)

7.During this entire process, the ONLY thing to watch is the molten metal. As soon as it has solidi- fied, the arc is SLOWLY brought back, and another few drops of metal are deposited. DO NOT FOLLOW THE UP AND DOWN MOVEMENT OF THE ARC WITH YOUR EYES. KEEP THEM ON THE MOLTEN METAL.

8.When the arc is brought back to the now solidified puddle, IT MUST BE SHORT, otherwise no metal will be deposited, the puddle will melt again, and it will “drip”.

9.It is important to realize that the process consists of SLOW, DELIBERATE movements. There are no fast motions.

Vertical-Down Welding

Vertical-down welds are applied at a fast pace. These welds are therefore shallow and narrow, and are excellent for sheet metal. Do not use the vertical- down technique on heavy metal. The welds will not be strong enough.

1.Use 1/8” (3.2m) or 3/32” (2.5mm) AWS 6011.

2.On thin metal use 70-75 amps.

(14 ga. 75 A - 16 ga. 60 A.)

3.Hold the electrode in a 30-45° angle with the tip of the electrode pointing upwards.

4.Hold a VERY SHORT arc, but do not let the elec- trode touch the metal.

5. An up and down whipping

Very

short

motion will help prevent

arc

burn-through on very thin plate.

 

30°-40°

6. Watch the molten metal carefully.

The important thing is to continue lowering the entire arm as the weld is made so the angle of the electrode does not change. Move the electrode fast enough so that the slag does not catch up with the arc.

POWER-ARC 4000

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Contents POWER-ARC California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionPrécautions DE Sûreté On-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyMaster Table of Contents for ALL Sections Technical Specifications POWER-ARC InstallationEngine Exhaust can kill Safety PrecautionsLocation and Ventilation StoringPRE-OPERATION Engine Service 8 HP Carb. Certified 9 HP Honda 9 HP Kool Bore Plus Power-Arc 4000 Typical Fuel ConsumptionMuffler Deflector Spark ArresterWelding Cable Connections Electrical Output ConnectionsCable Size and Length Plugs and HAND-HELD Equipment Auxiliary Power ReceptaclesCable Installation Machine GroundingCircuit Breakers Premises WiringType Common Electrical Devices Possible Concerns Table A.2 Electrical Device USE with the POWER-ARCGeneral Description Safety InstructionsOperation Operating InstructionsWelding Capability Operational Features and ControlsDesign Features Advantages Recommended ApplicationsGENERATOR/WELDER Controls Controls and SettingsGasoline Engine Controls Before Starting the Engine Engine OperationStarting the Engine Running the Engine Stopping the EngineBREAK-IN Period General Information Generator OperationTable B.3 Generator Power Applications Control Function / Operation Current Control Dial Welding OperationWelding Guidelines Material Thickness Electrode Type Size SettingStick Welding Welding arc What Happens in the Arc?Correct Way to Strike An Arc Correct Welding Position Correct Arc LengthCorrect Welding Speed Do the following Common MetalsTypes of Welds Use the followingWelding in the Vertical Position PenetrationFillet Welds Multiple Pass WeldsVertical-Down Welding Vertical-Up WeldingHardfacing To Reduce Wear How to Hardface the Sharp Edge Metal to Ground WearOverhead Welding Welding Sheet MetalCast Iron Plate Preparation Welding Cast IronLow Hydrogen Group Stable-Arc E7018 Selecting ElectrodesOut-of-Position Group AWS E6011 High-Speed Group AWS E6013OPTIONS/ACCESSORIES AccessoriesLincoln Electric Accessories Engine Adjustments MaintenanceRoutine and Periodic Maintenance Engine MaintenanceFigure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Part Table D.1 Engine Maintenance PartsHonda Figure D.5. Brush Removal and Replacement GENERATOR/WELDER MaintenanceFigure D.6. Major Component Locations HOW to USE Troubleshooting Guide TroubleshootingPossible Areas SymptomsTroubleshooting Engine requires service to head, head gasket, and/or valves Diagrams Wiring Diagram Power ARC 4000 Codes 10671 4000 POWER-ARC POWER-ARC Precaucion Warnung
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