Lincoln Electric IM871-A manual Overhead Welding, Welding Sheet Metal, Hardfacing To Reduce Wear

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OPERATION

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Overhead Welding

Various techniques are used for overhead welding. However, in the interest of simplicity for the inexperi- enced welder, the following technique will probably take care of his needs for overhead welding:

1.Use 1/8” (3.2mm) 90-105 A or 3/32” (2.5mm) 70 A AWS 6011 electrode on AC.

2.Put the electrode in he holder so it sticks straight out.

3.Hold the electrode at an angle approximately 30° off vertical, both seen from the side and seen from end. (See drawing below.)

Side View

End View

30° 30°

It is important to hold a VERY SHORT arc. (A long arc will result in falling molten metal; a short arc will make the metal stay.)

If necessary, and this is dictated by the appearance of the molten puddle, a slight back and forth whipping technique may be used to prevent “dripping”.

Welding Sheet Metal

Welding sheet metal presents an additional problem- burn through. Follow these simple rules:

1.Hold a very short arc. This, together with the prop- er travel speed, will eliminate burn through.

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

3.Use low amperage. 75 A for 1/8” (3.2mm) elec- trode, 70 A for 3/32” (2.5mm) electrode.

4.Move rapidly enough to stay ahead of the molten slag. A whipping technique may be used to further minimize burn through.

5.If you have a choice, use lap joints rather than fil- lets or butts; the double thickness effect of a lap joint makes it much easier to weld without burning through.

Hardfacing (To Reduce Wear)

There are several kinds of wear. The two most often encountered are:

1.Metal to Ground Wear: Plowshares, bulldozer blades, buckets, cultivator shares, and other metal parts moving in the soil.

2.Metal to Metal Wear: Trunnions, shafts, rollers and idlers, crane and mine car wheels, etc.

Each of these types of wear demands a different kind of hardfacing electrode.

When applying the proper electrode, the service life of the part will in most cases be more than double. For instance, hardfacing of plowshares results in 3-5 times more acreage plowed.

How to Hardface the Sharp Edge (Metal to Ground Wear)

1.Grind the share, approximately one inch along the edge, so the metal is bright and clean.

2.Place the share on an incline of approximately 20-30°. The easiest way to do this is to put one end of the share on a brick. (See drawings) Most users will want to hardface the underside of the share, but some might find that the wear is on the top side. The important thing is to hardface the side that wears.

3.Use 1/8” (3.2mm) Wearshield at 80-100 A. Strike the arc about one inch from the sharp edge.

POWER-ARC 5500

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Contents POWER-ARC California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding and Cutting Sparks can Cause fire or explosionPrécautions DE Sûreté On-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Technical Specifications POWER-ARC InstallationLocation and Ventilation Safety PrecautionsStoring Engine Exhaust can killGasoline Fuel only PRE-OPERATION Engine ServiceMuffler Deflector PowerArc 5500 Typical Fuel ConsumptionSpark Arrester Honda 9 HPElectrical Output Connections POWER-ARC 5500 Output ConnectionsWelding Cable Connections Cable Size and LengthCable Installation Auxiliary Power ReceptaclesPlugs and HAND-HELD Equipment Machine GroundingCircuit Breakers Premises WiringType Common Electrical Devices Possible Concerns Table A.2 Electrical Device USE with the POWER-ARCOperation Limitations Controls and SettingsOutput Panel Controls Physical Location of Components may vary by Code NoGasoline Engine Controls Engine OperationStarting the Engine Before Starting the EngineStopping the Engine Generator OperationRunning the Engine BREAK-IN PeriodTable B.3 Generator Power Applications Control Function / Operation Current Control Dial Welding OperationWelding Guidelines Material Thickness Electrode Type Size SettingWelding arc What Happens in the Arc?Correct Way to Strike An Arc Correct Welding PositionCorrect Arc Length Correct Welding SpeedTypes of Welds Common MetalsUse the following Do the followingPenetration Fillet JointsMultiple Pass Welds Welding in the Vertical PositionVertical-Down Welding Vertical-Up WeldingOverhead Welding How to Hardface the Sharp Edge Metal to Ground WearWelding Sheet Metal Hardfacing To Reduce WearCast Iron Plate Preparation Welding Cast IronLow Hydrogen Group AWS E7018 Selecting ElectrodesOut-of-Position Group AWS E6011 High-Speed Group AWS E6013 Lincoln Electric Accessories AccessoriesOPTIONS/ACCESSORIES Engine Maintenance MaintenanceRoutine and Periodic Maintenance Figure D.3 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Engine AdjustmentsPart Robin / Subaru Honda Table D.1 Engine Maintenance PartsFigure D.5. Brush Removal and Replacement GENERATOR/WELDER MaintenanceFigure D.6. Major Component Locations HOW to USE Troubleshooting Guide TroubleshootingContact your local Lincoln Authorized Field Service Facility SymptomsTroubleshooting Engine requires service to head, head gasket, and/or valves Enhanced Diagram DiagramsDiagrams Diagrams Diagrams Power ARC Print Dimension Page Precaucion Guards off

IM871-A specifications

The Lincoln Electric IM871-A is a cutting-edge industrial welding machine that exemplifies the brand's commitment to quality, innovation, and efficiency. Designed specifically for professionals in various sectors, including manufacturing, construction, and maintenance, the IM871-A boasts a range of features that streamline the welding process while ensuring longevity and reliability.

One of the standout features of the IM871-A is its advanced inverter technology. This technology not only enhances the machine’s portability but also improves energy efficiency. The inverter design allows for a compact and lightweight unit without sacrificing power output, making it easier for welders to move around job sites while maintaining peak performance. Welders can expect to achieve high-quality welds with minimal spatter, ensuring a clean and professional finish.

The IM871-A is equipped with a multifunctional interface, allowing users to easily navigate through various settings and customize their welding parameters according to specific project requirements. This user-friendly display includes digital readouts for voltage and current, providing real-time information that aids in precision control. Such adaptability makes the IM871-A suitable for a wide range of welding applications, from thin sheet metal to heavier structural components.

Additionally, the Lincoln Electric IM871-A supports multiple welding processes, including MIG, TIG, and Stick welding. This versatility makes it an ideal choice for professionals who require a machine that can handle diverse tasks without the need for multiple setups or equipment. The welder's robust output range further enhances its capabilities, accommodating various materials and thicknesses for both ferrous and non-ferrous metals.

Safety is paramount in any welding operation, and the IM871-A incorporates several features designed to protect the user. These include built-in thermal overload protection, which prevents the machine from overheating during extended use, and an automatic voltage reduction system that ensures the welder remains safe while efficiently managing power.

In summary, the Lincoln Electric IM871-A is a powerful and versatile welding machine built to meet the rigorous demands of industrial applications. With its advanced inverter technology, intuitive user interface, multiple welding process support, and essential safety features, it stands out as a reliable choice for professionals aiming for quality and efficiency in their welding operations. Whether for onsite applications or workshop environments, the IM871-A is engineered to deliver exceptional performance and durability, solidifying its place in the competitive welding market.
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