Illinois Tool Works Inc.

Michael Todd Klegin

Charles Lyle Kaufman

Chris John Roehl

James Lee Uecker

Robert Raimund Davidson

Jeffery Ray Ihde

Thomas Don Lahti

Mark Richard Christopher

Gary A Thyssen

Caleb Haven

Timothy Jay Reitmeyer

A welding system and method provide for generating a controlled waveform for welding power output, the waveform comprising a plurality of successive peak phases designed to avoid or reduce micro-arcing when used with metal-cored or flux-cored electrode wires. Ratios of the background current and voltage levels are elevated as compared to conventional techniques, with the levels in most cases exceeding 50% of the peak currents and voltages. Transitions between background and peak levels of current and voltage are also smoothed, and the duration of the peak phase as compared to the duration of each pulse cycle is elongated to further reduce micro-arcing.

Welding system and method for shielded welding wires

A method and device for controlling current flow through a welding clamp are provided. One welding clamp includes a first contact piece configured to contact a workpiece and to provide a first current path that limits current flow. The welding clamp also includes a second contact piece configured to contact the workpiece and to provide a second current path. When the welding clamp is being clamped to the workpiece, the first contact piece is configured to contact the workpiece prior to the second contact piece. In addition, the welding clamp is configured so that current flows through the first current path prior to flowing through the second current path when the welding clamp is being clamped to the workpiece.

Method and device for controlling current flow through a welding clamp

A method and system to determine optimum operating parameters for the startup phase of a welding-type process based on user-desired operating parameters of the post-startup or welding phase of the welding-type process are disclosed. While applicable to a number of welding-type processes, the method and system are particularly configured to determine an optimum wire feed speed for Gas Metal Arc Welding of aluminum using pulse spray transfer.

Method and system of welding with auto-determined startup parameters

A system and method for stabilizing a welding arc is disclosed. The method of initiating the arc includes the steps of defining a wire feed speed based on a user selected wire feed speed and then abruptly reducing the wire feed speed before the wire feed speed reaches a relatively stabilized speed for welding, thereby allowing a welding arc to initiate and propagate to a generally steady state.

Welding arc stabilization process

A method and apparatus for providing welding power with a start control is disclosed. The welding power supply includes a source of welding power, a wire feeder and a controller. The source of welding power has at least one power control input, and provides welding power to an arc. The wire feeder has a feeder control input, and provides wire to the arc. The controller has a wire feed control output connected to the feeder control input, and a power source control output connected to the power control input. The controller also has a wire feed delay module, having as an input a user trigger signal, and having as an output the wire feed control output and the power source control output.

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Greenville, WI, United States of America

Michael Todd Klegin