Operation

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CONSTANT CURRENT OPERATION WITH A LINCOLN ELECTRIC WIRE FEEDER

Lincoln Electric does NOT recommend constant current semiautomatic welding for applications which need to meet specified weld metal chemical or mechanical property requirements or weld quality requirements.

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Most semiautomatic welding processes perform better using constant voltage power sources. Welding codes usually do not address the power source selection or specifically, whether the welding process is to be operated in the constant voltage or constant current mode. Instead, codes typically specify limitations on the current, voltage, heat input and preheat tempera- ture based on the material to be welded. The intention is to assure that proper weld material properties will develop. Welding is sometimes performed using con- stant current power sources. The operation can be more convenient because it may allow the use of an existing stick (SMAW) power source and the power source can be placed at a distant location without any provision for adjusting the output settings.

For constant current operation, the power source is set to deliver the specified current. The power source regulates this current regardless of changes in the welding circuit, including cable length, electrode diam- eter, wire feed speed, contact tip to work distance, etc.

Changes in the wire feed speed (WFS) or contact tip to work distance (CTWD) affect the arc voltage when constant current power sources are used. Lowering the wire feed speed raises the voltage, raising the wire feed speed lowers the voltage. Lengthening the contact tip to work distance raises the voltage, short- ening the contact tip to work distance lowers the volt- age. If the contact tip to work distance is properly maintained, a satisfactory operating voltage range may be achieved, and a sound weld may result. However, when a welder uses a longer contact tip to work distance, an arc-sensing wire feeder compen- sates by increasing the wire feed speed to regulate the voltage.

Even if the voltage and current remain unchanged, the increased wire feed speed may result in a deposition rate well beyond the specified range of the electrode. Under these conditions, the specified weld metal prop- erties may not be achieved. Constant voltage power sources deliver large current surges to stabilize the arc when the electrode is shorted or the arc length is very short.

However, a constant current power source does not provide such a response to stabilize the arc. It may be difficult to achieve required weld metal properties, or to achieve the required quality of welds needed to pass nondestructive tests, when such welds are made under constant current operation.

BIG RED™ 600

IM10019 specifications

The Lincoln Electric IM10019 is a versatile and powerful inverter-based multi-process welder that caters to a variety of welding needs, making it an excellent choice for professionals and hobbyists alike. Renowned for its portability and compact design, this welder is well-suited for both shop use and remote locations.

One of the standout features of the IM10019 is its multi-process capability. It can efficiently perform MIG, FCAW, and DC TIG welding, allowing users to tackle different welding tasks with a single machine. This flexibility saves time and reduces the need for multiple welding units, streamlining the work process in workshop environments.

The welder operates on a voltage of 230V, making it compatible with most standard power sources. It offers a wide amperage range, enabling welders to work on various thicknesses of metal. Users can adjust the settings to accommodate different welding materials, including steel, aluminum, and stainless steel, thereby enhancing the versatility of the machine.

Lincoln Electric has integrated advanced technology into the IM10019, featuring an intuitive digital display that simplifies the adjustment of welding parameters. This user-friendly interface enables welders to make precise changes in wire feed speed, voltage, and other settings, ensuring consistent and high-quality welds. Additionally, the welder incorporates a built-in wire feeder that can accommodate both solid and flux-cored wires, further expanding its compatibility with various welding processes.

Durability is a significant characteristic of the IM10019, as it is built with high-quality materials designed to withstand rugged working conditions. This robust construction ensures reliable performance over time, making it a long-term investment for users who require a dependable welding solution.

Moreover, the compact size and lightweight design of the Lincoln Electric IM10019 enhance its portability, allowing for easy transport between job sites. This feature, coupled with its diverse welding capabilities and durable build, makes it an ideal choice for contractors, fabricators, and DIY enthusiasts seeking a reliable all-in-one welding machine.

In summary, the Lincoln Electric IM10019 is an exceptional welding unit that offers multi-process functionality, advanced technology, robust construction, and portability, making it a top choice for various welding applications. Whether in the shop or on the job site, it delivers the performance and reliability needed for optimal results.