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Lincoln Electric IM762-C manual Pulse Welding, Figure A.6 Current Wave Form Pulse

Models: IM762-C

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OPERATION

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PULSE WELDING

Pulse welding procedures are set by controlling an overall "arc length" variable. When pulse welding, the arc voltage is highly dependent upon the waveform. The peak current, back ground current, rise time, fall time and pulse frequency all affect the voltage. The exact voltage for a given wire feed speed can only be predicted when all the pulsing waveform parameters are known. Using a preset voltage becomes impracti- cal, and instead the arc length is set by adjusting "trim".

Trim adjusts the arc length and ranges from 0.50 to 1.50, with a nominal value of 1.00. Trim values greater than 1.00 increase the arc length, while values less than 1.00 decrease the arc length.

Most pulse welding programs are synergic. As the wire feed speed is adjusted, the Power Wave will automatically recalculate the waveform parameters to maintain similar arc properties.

The Power Wave utilizes "adaptive control" to com- pensate for changes in electrical stick-out while weld- ing. (Electrical stick-out is the distance from the con- tact tip to the work piece.) The Power Wave wave- forms are optimized for a 0.75" (19mm) stick-out. The adaptive behavior supports a range of stickouts from 0.50" (13mm) to 1.25" (32mm). At very low or high wire feed speeds, the adaptive range may be less due to reaching physical limitations of the welding process.

Arc Control, often referred to as wave control, in pulse programs usually adjusts the focus or shape of the arc. Wave control values greater than 0.0 increase the pulse frequency while decreasing the background cur- rent, resulting in a tight, stiff arc best for high speed sheet metal welding. Wave control values less than

0.0decrease the pulse frequency while increasing the background current, for a soft arc good for out-of-posi- tion welding.

(See Figure A.6)

FIGURE A.6

CURRENT WAVE FORM (PULSE)

Current

Time

POWER WAVE 455M

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Lincoln Electric IM762-C manual Pulse Welding, Figure A.6 Current Wave Form Pulse
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IM762-C specifications

The Lincoln Electric IM762-C is a state-of-the-art industrial welding machine designed to meet the demanding needs of modern welding applications. This versatile machine is recognized for its advanced features, robust performance, and user-friendly interface, making it a popular choice among professionals in various sectors including manufacturing, construction, and fabrication.

One of the standout features of the IM762-C is its high-duty cycle, which allows for prolonged use without significant overheating. This capability is essential for operations that require continuous and consistent welding performance, ensuring productivity and efficiency are maximized in any work environment. Additionally, the machine is equipped with a powerful inverter technology, which not only enhances energy efficiency but also ensures stable arc performance across a wide range of materials.

The IM762-C supports multiple welding processes, including MIG, TIG, and stick welding. This flexibility allows users to switch between welding methods depending on specific project requirements effortlessly. The machine also features advanced controls and digital displays that provide real-time feedback on welding parameters, allowing operators to make immediate adjustments for optimal results.

Another notable characteristic of the IM762-C is its exceptional portability. Weighing significantly less than traditional welding machines, it can be easily transported to job sites, making it ideal for mobile applications. The design also incorporates rugged construction, which ensures durability in challenging environments.

Safety is a paramount consideration in the design of the IM762-C. It is equipped with several safety features including over-temperature protection, overload indicators, and a user-friendly interface that minimizes the risk of operator error. The machine also complies with international safety standards, providing peace of mind to users.

In summary, the Lincoln Electric IM762-C combines versatility, efficiency, and safety in a robust package. Its advanced inverter technology, high-duty cycle, and multifunctional capabilities make it an invaluable tool for any welding professional. Whether working in a workshop or on a job site, the IM762-C stands out as a dependable and efficient solution for a wide range of welding tasks.