Lincoln Electric IM822 manual Penetration, Fillet Welds

Page 20

B-9

OPERATION

B-9

 

 

 

Penetration

Unless a weld penetrates close to 100% of the metal thickness, a butt joint will be weaker than the material welded together. In the example shown in Figure B.11, the total weld is only half the thickness of the material thus the weld is only approximately half as strong as the metal.

FIGURE B.11

In the example shown in Figure B.12, the joint has been welded so that 100% penetration could be achieved. The weld, if properly made, is as strong as or stronger than the original metal.

FIGURE B.12

Fillet Welds

When welding fillet welds, it is very important to hold the wire electrode at a 45° angle between the two sides or the metal will not distribute itself evenly. The gun nozzle is generally formed at an angle to facilitate this. See Figure B.13.

45°

FIGURE B.13

Welding In The Vertical Position

Welding in the vertical position can be done either ver- tical-up or vertical-down. Vertical-up is used whenever

alarger, stronger weld is desired. Vertical-down is used primarily on sheet metal

.

WARNING

Use of this unit on thicker materials than recom- mended may result in welds of poor quality. The welds may appear to be fine, but may lack the fusion or bonding necessary to give a strong weld. This is called "Cold Casting" or "cold lap- ping" and is some what similar to a cold solder joint. Weld failure may result.

------------------------------------------------------------------------

Vertical-up And Overhead 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.

When welding out-of-position, run stringer beads. Don’t whip, break the arc, move out of the puddle, or move too fast in any direction. Use Wire Feed Speed (WFS) in the low portion of the range. The general technique and proper gun angle is illustrated in Figure B.14.

Generally, keep the electrode nearly perpendicular to the joint as illustrated. The maximum angle above per- pendicular may be required if porosity becomes a problem.

MIG PAK HD

Page 19 Page 21
Image 20
Page 19 Page 21
Contents MIG PAK HD Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Master Table of Contents for ALL Sections MIG PAK HD InstallationTechnical Specifications MIG PAK HD Electric Shock can kill Safety PrecautionsIdentify and Locate Components Select Suitable Location StackingChanging Polarity Input ConnectionsShielding GAS Connection Code Requirements for ELECTRI- CAL Input ConnectionsRequirements for Maximum Output Extension Cord UsageOperational Features and Controls Design Features and AdvantagesOperation General DescriptionControls and Settings Welding CapabilityLimitations Welding OperationsShielding GAS Contact TIP Wire Electrical Electrode Stickout3OPERATIONB-3 Making a Weld Table B.1 MIG PAK HDCleaning TIP and GAS Nozzle Changing Machine Over to Feed Other Wire SizesOverload Protection Thermal ProtectionSELF-SHIELDED Fcaw Flux Core Welding ARC Learning to WeldARC-WELDING Circuit Gmaw MIG Welding ARC Process SelectionCommon Metals Joint Types and PositionsFor Gmaw MIG Process For Fcaw Innershield ProcessPenetration Fillet WeldsMachine SET UP for the SELF-SHIELDED Fcaw Process Welding Techniques for the SELF- Shielded Fcaw ProcessVertical-down Welding Correct Welding PositionCorrect Electrical Stickout ESO Correct Welding SpeedElectrode Back-SteppingMild Steel Machine SET UP for the Gmaw MIG Process Welding Techniques for the Gmaw MIG ProcessMild Steel Electrode GAS TypeTroubleshooting Welds Operation Accessories AccessoriesInnershield Welding Wire MIG Welding WireMaintenance Maintenance Safety PrecautionsItems Requiring No Maintenance Routine and Periodic MaintenanceCleaning the GUN Liner Cleaning Components AS RequiredComponent Replacement Procedures Changing the Contact TIPGUN Assembly Removal Work Cable InstallationTroubleshooting HOW to USE Troubleshooting GuideProblems Possible Areas Symptoms Misadjustments Recommended Course of ActionAuthorized Field Service Facility Contact your local LincolnWelding Problems Diagrams WiringdiagramPrecaucion Warnung

IM822 specifications

The Lincoln Electric IM822 is a cutting-edge multi-process welding machine that is making waves in the welding industry for its advanced capabilities and user-friendly features. Known for its versatility, the IM822 supports a variety of welding processes including MIG, TIG, and stick, accommodating a wide range of applications in both industrial and commercial settings.

One of the standout features of the IM822 is its inverter technology, which enhances both performance and efficiency. This inverter-based system allows the welder to output a stable arc, even in fluctuating input power conditions, making it ideal for use on job sites with inconsistent power supplies. The lightweight and compact design of the IM822 are direct benefits of this inverter technology, allowing for portability without sacrificing power.

The IM822 also boasts an impressive duty cycle, which allows for prolonged use without overheating. This characteristic is crucial for professional welders who require consistent, high-quality welds over extended periods. Additionally, it is equipped with an easy-to-read digital display that presents key information such as voltage and amperage settings, giving operators precise control over their work.

User-friendly interface is another hallmark of the Lincoln Electric IM822. The machine comes with intuitive controls that make it easier for both novice and experienced welders to navigate through settings quickly. With preset programs, users can select the most suitable parameters for specific materials and thicknesses, thereby enhancing productivity and reducing setup time.

Moreover, the IM822 excels in providing versatile welding capabilities, allowing it to handle various materials, including stainless steel, aluminum, and mild steel. The machine's robust construction further ensures durability, making it a reliable tool that withstands the rigors of demanding work environments.

Incorporating safety features such as thermal overload protection and an automatic shut-off system, the IM822 promotes safe operation, minimizing the risk of accidents. With a history of quality and innovation backing it, Lincoln Electric has positioned the IM822 as a go-to choice for welders seeking a modern solution that doesn't compromise on power or usability.

In conclusion, the Lincoln Electric IM822 combines advanced inverter technology, user-friendly operation, and robust welding capabilities, making it an excellent investment for professionals in the welding field. Whether for fabrication, repair, or maintenance applications, the IM822 stands out as a versatile and dependable welding solution.
Top Page Image Contents