Illinois Tool Works Inc.

Zachary Erndt

Michael Vincent Hoeger

Al J DeCoster

Michael Hoeger

A welding-type system for gas tungsten arc welding including control circuitry to control the initiation of a welding arc and the preflow and postflow of inert shielding gas based on sensed voltages.

System for TIG shielding gas preflow, postflow, and arc starting

The present disclosure is directed to a system and method for obtaining a desirable shielding gas flow in a welding device. The system includes a user interface configured for a user to input the size of the nozzle, a processor that is configured to calculate a desirable flow rate of shielding gas based at least in part on the input nozzle size, and a flow regulator that is configured to control the flow of the shielding gas in order to obtain the desirable flow rate.

System and method for controlling shielding gas flow in a welding device

The present disclosure is directed to a component of a welding device that is configured to produce a shielding gas having a developed flow profile, which provides for a shielding gas column having a laminar profile over a greater length than has been achieved through conventional means. The component utilizes one or more flow restrictors, which are configured to provide higher resistance to the flow of shielding gas at increasing distances from the center of a shielding gas flow channel. By providing increasing resistance toward the periphery of the channel, a developed shielding gas flow profile may be achieved over a relatively short flow length.

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Sherwood, WI, United States of America

Zachary Erndt