Lincoln Electric 5000 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 5000

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Contents Power ARC Safety Depends on YouSafety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Installation Technical Specifications Power ARCStoring Safety PrecautionsLocation and Ventilation Lifting StackingTilting Assembly of Wheels and Handle to the Tube Frame PRE-OPERATION Engine Service OILFuel Spark ArresterElectrical Output Connections Welding Cable ConnectionsMachine Grounding Auxiliary Power ReceptaclesCable Installation Power Cord Connections to TWIST- Lock Plugs Premises WiringPlugs and HAND-HELD Equipment Circuit BreakersThese Devices Without Safety Instructions OperationOperating Instructions General DescriptionLimitations Recommended ApplicationsWelding Capability Controls and Settings GENERATOR/WELDER ControlsFigure B.2 Gasoline Engine Controls Gasoline Engine ControlsStarting the Engine Engine OperationBefore Starting the Engine Stopping the Engine BREAK-IN PeriodFor a HOT Engine For Best Engine StartingGeneral Information To USE the Generator AS AN Auxiliary Power SupplyGenerator Operation Table B.3 Generator Power Applications Suggested Power Applications Running Watts Start-up WattsTo USE the Power ARC 5000 for Stick Welding Welding OperationControl Function / Operation Current Control Dial After YOU Finish the WeldWelding Guidelines Stick Welding What Happens in the Arc? Figure B.4 The welding arcCorrect Welding Speed Correct Welding Position Correct Arc LengthCorrect Way to Strike An Arc Types of Welds PracticeCommon Metals Penetration Fillet WeldsMultiple Pass Welds Welding in the Vertical PositionVertical-Up Welding Vertical-Down WeldingHow to Hardface the Sharp Edge Metal to Ground Wear Overhead WeldingWelding Sheet Metal Hardfacing To Reduce WearWelding Cast Iron Cast Iron Plate PreparationSelecting Electrodes Out-of-Position Group AWS E6011High-Speed Group AWS E6013 Low Hydrogen Group Stable-Arc E7018Accessories OPTIONS/ACCESSORIESLincoln Electric Accessories Briggs and Stratton AccessoriesMaintenance Routine and Periodic MaintenanceEngine Maintenance Engine AdjustmentsFigure D.3 Clean Cooling System Clean AIR Filter PRE-CLEANERTable D.2 Engine Maintenance Parts Part Part NumberGENERATOR/WELDER Maintenance Figure D.6. Brush Removal and ReplacementFigure D.7. Major Component Locations Possible Areas TroubleshootingSymptoms Generator POWER, Always Not RUN Engine Without AN Diagrams Wiring Diagram Power ARCDimension Print How To Read Shop Drawings New Lessons in Arc WeldingNeed Welding Training? Basic CoursePrecaucion Warnung
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