Lincoln POWER-ARC 4000 manual Selecting Electrodes, Out-of-Position Group AWS E6011

Page 34

B-19

OPERATION

B-19

 

 

 

In some instances a back-up strip may be used and plates may be gapped 1/8” (3.2mm) or more, as shown in figure (b).

 

(b)

Scrap steel back-up strip

(a)

(c)

Three ways to prepare plates where complete penetration is necessary.

On sections where only a sealed joint is required and strength is not important, the joint may be welded after slightly veeing out the seam as shown in figure (d) below.

(d)

(e)

Single and double beads, with and without beveling for tight, partial strength joints.

Selecting Electrodes

Which electrode is best for the particular job . . . how do you use it? These are important questions because the cost, quality, and appearance of your work depends on proper electrode selection and appli- cation. MILD STEEL ELECTRODES may be classi- fied into the following groups:

Out-of-Position Group (AWS E6011)

This group includes electrodes which have a snappy, deep penetrating arc and fast freezing deposits.

These electrodes are used for general purpose, all- position fabrication and repair welding. They are also the best choice for pipe welding and sheet metal butt, corner, and edge welds. They can be used for repair work when dirt, grease, plating or paint cannot be completely cleaned from the steel. These electrodes are typically used with motions “A” and “B” (see draw- ing) for the first pass on vertical-up welds.

High-Speed Group (AWS E6013)

This group includes electrodes which have a moder- ately forceful arc and deposit rates between those of the out-of-position and high-deposit electrodes.

They are primarily general purpose production elec- trodes especially for downhill fillets and laps or short and irregular welds that change direction or position. They are also widely used in maintenance and recom- mended for sheet metal fillet and lap welds. Motion “D” (see drawing) is generally used for vertical-up welding, but motions “A” and “B” are also suitable.

Low Hydrogen Group (Stable-Arc E7018)

These electrodes are generally called “low hydrogen”. The name comes from the fact that their coating contains little hydrogen in either moisture or chemical form. Low hydrogen electrodes offer these benefits: outstanding crack resistance, lowest porosity on sulphur bearing steels, and X-ray quality deposit capa- bility. Thus, they are the first choice when welding “problem” steels. E7018 can be used in all positions, with Motion “C” (below) recommended for the first pass on vertical-up welds. NEVER use a whipping technique or a long arc with these electrodes. ALWAYS fill craters by drawing electrode away slowly. ALWAYS keep these electrodes dry. Electrodes, when not used within a few hours after a container is opened, must be stored in heated cabinets.

 

 

 

Motions

 

E

 

 

 

 

D

 

 

START

F

C

 

 

 

 

 

 

 

 

 

B

 

 

 

G

 

 

 

 

A

SIDE

 

VIEW

 

 

 

 

 

 

 

 

POWER-ARC 4000

Page 33 Page 35
Image 34
Page 33 Page 35
Contents POWER-ARC Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Please Examine Carton and Equipment For Damage Immediately On-Line Product RegistrationMaster Table of Contents for ALL Sections Installation Technical Specifications POWER-ARCStoring Safety PrecautionsLocation and Ventilation Engine Exhaust can killPRE-OPERATION Engine Service Spark Arrester Power-Arc 4000 Typical Fuel ConsumptionMuffler Deflector 8 HP Carb. Certified 9 HP Honda 9 HP Kool Bore PlusWelding Cable Connections Electrical Output ConnectionsCable Size and Length Machine Grounding Auxiliary Power ReceptaclesCable Installation Plugs and HAND-HELD EquipmentPremises Wiring Circuit BreakersTable A.2 Electrical Device USE with the POWER-ARC Type Common Electrical Devices Possible ConcernsOperating Instructions Safety InstructionsOperation General DescriptionRecommended Applications Operational Features and ControlsDesign Features Advantages Welding CapabilityControls and Settings GENERATOR/WELDER ControlsGasoline Engine Controls Before Starting the Engine Engine OperationStarting the Engine Running the Engine Stopping the EngineBREAK-IN Period Generator Operation General InformationTable B.3 Generator Power Applications Welding Operation Control Function / Operation Current Control DialMaterial Thickness Electrode Type Size Setting Welding GuidelinesStick Welding What Happens in the Arc? Welding arcCorrect Welding Speed Correct Welding Position Correct Arc LengthCorrect Way to Strike An Arc Side viewUse the following Common MetalsTypes of Welds Do the followingMultiple Pass Welds PenetrationFillet Welds Welding in the Vertical PositionVertical-Up Welding Vertical-Down WeldingWelding Sheet Metal How to Hardface the Sharp Edge Metal to Ground WearOverhead Welding Hardfacing To Reduce WearWelding Cast Iron Cast Iron Plate PreparationHigh-Speed Group AWS E6013 Selecting ElectrodesOut-of-Position Group AWS E6011 Low Hydrogen Group Stable-Arc E7018OPTIONS/ACCESSORIES AccessoriesLincoln Electric Accessories Engine Maintenance MaintenanceRoutine and Periodic Maintenance Engine AdjustmentsFigure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Part Table D.1 Engine Maintenance PartsHonda GENERATOR/WELDER Maintenance Figure D.5. Brush Removal and ReplacementFigure D.6. Major Component Locations Troubleshooting HOW to USE Troubleshooting GuideSymptoms Possible AreasTroubleshooting Engine requires service to head, head gasket, and/or valves Diagrams Wiring Diagram Power ARC 4000 Codes 10671 S25341Dimension Print Power ARC POWER-ARC POWER-ARC Precaucion Warnung
Top Page Image Contents