Patent application number | Description | Published |
20110114612 | Method and Apparatus For Welding - A method and apparatus for welding include initiating a pulse welding process includes initiating a welding arc by providing CC type welding power, maintaining the arc by providing CV type power. Then, pulse type welding power is provided. The method and system can be used to start short circuit, or other welding processes by providing short circuit power, or welding power of a given mode, instead of providing pulse power. Also, in one alternative, a method and system of initiating a pulse, short circuit, or given welding process includes initiating a welding arc by providing CC type welding power at least until a pseudo-equilibrium for the arc is established. Then, providing welding power in a pulse, short circuit, or the given mode. | 05-19-2011 |
20120061362 | Method and Apparatus For Welding With Short Clearing Prediction - A method and apparatus for providing welding-type power is disclosed and includes a short clearing prediction module that uses the second derivative with respect to time of the output voltage, or an error between a measured output voltage and an output voltage predicted using the first derivative with respect to time of the output voltage. | 03-15-2012 |
20130270245 | Method and Apparatus For Welding - A method and apparatus for welding include initiating a pulse welding process includes initiating a welding arc by providing CC type welding power, maintaining the arc by providing CV type power. Then, pulse type welding power is provided. The method and system can be used to start short circuit, or other welding processes by providing short circuit power, or welding power of a given mode, instead of providing pulse power. Also, in one alternative, a method and system of initiating a pulse, short circuit, or given welding process includes initiating a welding arc by providing CC type welding power at least until a pseudo-equilibrium for the arc is established. Then, providing welding power in a pulse, short circuit, or the given mode. | 10-17-2013 |
20140069901 | Method and Apparatus For Welding With CV Control - A method and apparatus for welding is disclosed. The output is preferably a cyclical CV MIG output, and each cycle is divided into segments. An output parameter is sampled a plurality of times within one or more of the segments. The CV output is controlled within the at least one segment in response to the sampling. The parameter is output power, a resistance of the load, an output current, an output voltage, or functions thereof in various embodiments. The control loop is preferably a PI or PID loop. The loop may be applied only within a window. The set point may be taught or fixed. The system can be used to weld with a controlled arc length. | 03-13-2014 |
20140190959 | Method and Apparatus For Pulse and Short Circuit Arc Welding - A method and apparatus for multi process welding includes providing a controlled short circuit output and a pulse output in response to a user selection across a workpiece output stud and a torch output stud. | 07-10-2014 |
20140203007 | COOPERATIVE WELDING SYSTEM - The present invention includes a welding system that has at least two metal inert gas (MIG) welders configured to perform a cooperative pulsed MIG welding process. The welding system also includes at least one communications link connecting the at least two MIG welders to deliver at least one of subordination commands and superiority commands to either of the at least two MIG welders to synchronize the cooperative pulsed MIG welding process. | 07-24-2014 |
Patent application number | Description | Published |
20100224606 | SHORT CIRCUIT DETECTION SYSTEMS AND METHODS - A constant voltage (CV) welding process power supply is provided. The power supply includes a controller configured to detect a short circuit event in a CV welding process and increase a welding current based upon a periodically computed voltage error and a first gain to attempt to clear the short circuit event. The controller is further configured to detect whether the short circuit event has cleared after the first current increase. If the short circuit event has not cleared, the controller increases the welding current based upon the periodically computed voltage error and a second gain higher than the first gain. | 09-09-2010 |
20100224607 | WELDING PROCESS EMPLOYING VARIABLE MINIMUM CURRENT - A constant voltage (CV) welding process power supply including a controller that implements a variable minimum current is provided. The controller is configured to periodically compute a running current value during a welding operation. The controller is also configured to periodically compute a minimum current value based on a difference between the running current value and a preset offset value, wherein the preset offset value remains constant throughout the welding operation. | 09-09-2010 |
20110114613 | COMPACT WELDING WIRE FEEDER - Embodiments of a welding system include a compact wire feeder adapted to feed welding wire having a diameter up to approximately 5/64 inches disposed on a wire spool having an outer diameter of approximately 8 inches. The compact wire feeder may include a housing, a spool mounting hub disposed in the housing and adapted to receive the wire spool, and a wire drive assembly having a motor adapted to apply an output torque to a shaft of a gearbox to drive the welding wire from the welding spool to a welding torch. | 05-19-2011 |
20120248080 | WELDING ELECTRODE STICKOUT MONITORING AND CONTROL - Stickout of a welding electrode wire from a welding torch is determined during welding, and based upon a welding parameter, such as welding current. Different relationships are used for the determination depending upon whether the welding wire is in a short-circuit condition or an arc condition. The stickout may be converted to a standardized unit of measure to make it readily understandable to an operator. The stickout may be logged and associated with other parameters and information, such as workpiece, operator, welding system, date and time. The stickout may be used as the basis for an alarm or a disabling operation. Moreover, the stickout may be provided on a readout for the operator. It may also be used as a basis for controlling a wire feeding apparatus that retracts the welding wire to a desired stickout following a weld. | 10-04-2012 |
20130153557 | DC ELECTRODE NEGATIVE ROTATING ARC WELDING METHOD AND SYSTEM - A welding operation is performed by moving or rotating an arc in a welding torch, and feeding a metal cored wire through the torch in a direct current, electrode negative welding process. The electrode may include one or more arc stabilizers. The welding process may be pulsed or non-pulsed. Moreover, the process may be used with a number of different base metals intended to be welded, such as thin plate, galvanized metals, painted metals, coated metals, and so forth. | 06-20-2013 |
20130262000 | DEVICES AND METHODS FOR ANALYZING SPATTER GENERATING EVENTS - A method for monitoring a spatter generating event during a welding application. The method includes capturing data that corresponds to a welding current of the welding application. The method also includes detecting parameters associated with a short circuit from the captured data. The method includes analyzing the detected parameters to monitor the spatter generating event during the welding application. | 10-03-2013 |
20140117000 | WELDING PROCESS EMPLOYING VARIABLE MINIMUM CURRENT - A constant voltage (CV) welding process power supply including a controller that implements a variable minimum current is provided. The controller is configured to periodically compute a running current value during a welding operation. The controller is also configured to periodically compute a minimum current value based on a difference between the running current value and a preset offset value, wherein the preset offset value remains constant throughout the welding operation. | 05-01-2014 |
20150076119 | SYNCHRONIZED ROTATING ARC WELDING METHOD AND SYSTEM - A welding method includes feeding a welding electrode axially from a welding torch, moving the welding electrode radially in a desired pattern with respect to a central axis of the welding torch by a motion control assembly within the welding torch, transmitting from control circuitry a signal corresponding to a position of the welding electrode relative to a weld joint or weld pool, advancing the welding torch or a workpiece to establish a weld, and transferring material from the welding electrode to a first location in an area of the weld pool. The welding electrode moves radially while feeding the welding electrode from the welding torch, the material from the welding electrode is transferred to the first location during a first cycle of the desired pattern, and the first location is controlled based at least in part on the signal. | 03-19-2015 |