Manuals / Lincoln Electric / Power Tools / Welding System

Lincoln Electric IM822 manual Correct Electrical Stickout ESO, Correct Welding Speed

Models: IM822

1 39
Download 39 pages 53.75 Kb
Page 22
Image 22

B-11

OPERATION

B-11

FIGURE B.16

WARNING

ARC RAYS can burn eyes and skin.

When using an open arc process, it Is necessary to use correct eye, head and body protection.

Protect yourself and others, read “ARC RAYS can burn” at the front of this manual.

2.The Correct Way To Strike An Arc

1.Be sure the work clamp makes good electrical contact to the work.

2.Position gun over joint. End of wire may be lightly touching the work.

3.Position face shield to protect face and eyes, close gun trigger, and begin welding. Hold the gun so that the contact tip to work distance is about 3/8 to 1/2 inch (10 – 12 mm).

4.To stop welding, release the gun trigger and the pull the gun away from the work after the arc goes out.

5.A ball may form at the tip end of the wire after welding. For easier restrikes (with Innershield wire) the ball may be removed by feeding out a few inches of wire and simply bending the wire back and forth until it breaks off.

6.When no more welding is to be done, turn off the machine.

3.The Correct Electrical Stickout (ESO)

The electrical stickout (ESO) is the distance from the end of the contact tip to the end of the wire.

See Figure B.17

Contact Tip

Wire Electrode

3/8” (10mm)

Electrical Stickout (ESO)

FIGURE B.17

The easiest way to tell whether the ESO is the cor- rect length is by listening to its sound. The correct ESO has a distinctive “crackling” sound, very much like eggs frying in a pan. A long ESO has a hollow, blowing or hissing sound. If the ESO is too short, you may stick the contact tip or nozzle to the weld puddle and/or fuse the wire to the contact tip.

4.The Correct Welding Speed

The important thing to watch while welding is the puddle of molten metal right behind the arc. See Figure B.18. Do not watch the arc itself. It is the appearance of the puddle and the ridge where the molten puddle solidifies that indicates correct weld- ing speed. The ridge should be approximately 3/8” (10 mm) behind the wire electrode.

Most beginners tend to weld too fast, resulting in a thin uneven, “wormy” looking bead. They are not watching the molten metal.

Solidifying ridge

Molten puddle

FIGURE B.18

Once the arc has been established, maintaining the correct ESO becomes extremely important. The ESO should be approximately 3/8”(10mm) long.

MIG PAK HD

Page 21 Page 23
Page 22
Image 22
Lincoln Electric IM822 manual Correct Electrical Stickout ESO, Correct Welding Speed
Page 21 Page 23

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.