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    Controlled short circuit welding system and method
    42.
    发明授权
    Controlled short circuit welding system and method 有权

    公开(公告)号：US11370050B2

    公开(公告)日：2022-06-28

    申请号：US14674514

    申请日：2015-03-31

    Applicant: ILLINOIS TOOL WORKS INC.

    Inventor： Robert R. Davidson ,  Justin Durik ,  Richard Schuh ,  David Almy ,  Richard Martin Hutchison

    IPC: B23K9/09 ,  B23K9/095 ,  B23K9/173 ,  B23K9/06

    Abstract: A welding system and method provide for generating a controlled waveform for welding power output, the waveform comprising a plurality of successive peak phases followed by a short circuit between a welding wire electrode and an advancing weld puddle. Each then present peak phase is regulated based upon at least the immediately preceding short circuit to control the short circuit that will occur following the then present peak phase. Some embodiments permit regulating at least one waveform phase based upon at least the immediately preceding short circuit to control the next short circuit that will occur, and regulating at least one short response phase based upon at least the immediately preceding short circuit to control the next short circuit that will occur.

    Welding wire preheating systems and methods
    44.
    发明授权
    Welding wire preheating systems and methods 有权

    公开(公告)号：US11040410B2

    公开(公告)日：2021-06-22

    申请号：US15959847

    申请日：2018-04-23

    Applicant: Illinois Tool Works Inc.

    Inventor： Robert R. Davidson ,  Richard J. Schuh

    IPC: B23K9/095 ,  B23K9/10 ,  B23K9/173 ,  B23K9/235

    Abstract: Welding wire preheating systems and methods are disclosed. An example welding method includes: receiving a signal indicative of initiation of welding process; prior to initiating a welding arc based on the received signal, controlling voltage or current applied to a welding electrode to preheat the electrode to a temperature above an ambient temperature but below a melting point of the welding electrode; monitoring feedback voltage to determine a termination of preheating; and terminating preheating prior to initiating the welding arc in accordance with a welding protocol.

    Systems and methods for auto-tuning a GMAW welding process
    45.
    发明授权
    Systems and methods for auto-tuning a GMAW welding process 有权

    公开(公告)号：US11027358B2

    公开(公告)日：2021-06-08

    申请号：US16119890

    申请日：2018-08-31

    Applicant: Illinois Tool Works Inc.

    Inventor： Robert R. Davidson ,  Valarie Schwartz ,  Dustin Wagner

    IPC: B23K11/24 ,  B23K11/26 ,  B23K9/10 ,  H02M1/00

    Abstract: Systems and methods for auto-tuning a MIG welding process are disclosed. A welding-type power supply may include a power conversion circuitry configured to convert input power to welding-type power; and a controller configured to control the power conversion circuitry based on a plurality of operating parameters. The operating parameters may include an inductance parameter, a slope parameter, or a wet time parameter. During the welding process, in order to control the power conversion circuitry, the system may measure an output from the power conversion circuitry, and may update the inductance parameter, the slope parameter, or the wet time parameter.

    Waveform compensation systems and methods for secondary weld component response
    46.
    发明授权
    Waveform compensation systems and methods for secondary weld component response 有权

    公开(公告)号：US10464155B2

    公开(公告)日：2019-11-05

    申请号：US15341741

    申请日：2016-11-02

    Applicant: ILLINOIS TOOL WORKS INC.

    Inventor： Robert R. Davidson ,  Thomas A. Bunker ,  Richard Schuh

    IPC: B23K9/10 ,  G01R19/25 ,  B23K9/09 ,  B23K9/095

    Abstract: A method includes receiving data corresponding to a voltage level over time and a current level over time. The method also includes determining a first ratio corresponding to a voltage ramp percent or a voltage falling edge percent with respect to a peak in the voltage level and determining a second ratio corresponding to a current ramp ratio or a current falling edge ratio with respect to a peak in the current level. The method further includes determining, based on a comparison between the first ratio and the second ratio, whether to increment, decrement, or maintain an inductance compensation estimation value corresponding to an estimated inductance present in one or more secondary components associated with the welding operation.

    Dabbing pulsed welding system and method
    49.
    发明授权
    Dabbing pulsed welding system and method 有权

    公开(公告)号：US10040143B2

    公开(公告)日：2018-08-07

    申请号：US14076705

    申请日：2013-11-11

    Applicant: Illinois Tool Works Inc.

    Inventor： Robert R. Davidson ,  Richard J. Schuh ,  Matthew Alex Palmer

    IPC: B23K9/09 ,  B23K9/10

    Abstract: A pulsed welding regime includes a peak phase in which energy is added to an electrode and a weld puddle, and a molten ball begins to detach from the electrode, followed by a dabbing phase in which current is significantly reduced to place the ball in the weld puddle with addition of little or no energy. The resulting short circuit clears and the system proceeds to a background phase. The current in the dabbing phase is lower than the current during the background phase. The process may be specifically adapted for particular welding wires, and may be particularly well suited for use with cored wires. The dabbing phase allows for lower energy to be transferred to the sheath of such wires, and resets the arc length after each pulse cycle.

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