A welding or cutting system is provided that uses welding cables between a wire feeder and a power supply for high-speed data communications between the wire feeder and the power supply. A system designed as discussed herein eliminates the need for voltage and/or current sense leads for communication arc voltages/currents detected at the welding operation.

The invention described herein generally pertains to a system and method related to a semi-automatic or a manual welding operation and utilizing a member or a clamp to removeably secure a torch or a torch cable to a wire feeder. The member can include a first portion that is separated from a second portion, wherein a curved portion is in between the first portion and the second portion. The member can include an opening on the first portion that blocks a path of connect or disconnect with a portion of the torch or the torch cable. Further, the member can include an aperture on the second portion that is used to couple to a portion of the wire feeder with a fastener.

Systems and methods for wire feed speed control are disclosed. An example welding power supply includes a control panel comprising one or more input elements, and control circuitry. The control panel is configured to receive a first input relating to a material thickness and receive a second input to place the welding power supply in a first mode of operation, wherein the first input relates to a wire diameter. The control circuitry is configured to place the welding power supply in the first mode of operation when the first input is received from the one or more input elements; determine a coarse wire feed speed when the welding power supply is in the first mode of operation; receive a third input to fine tune the coarse wire feed speed; and fine tune the coarse wire feed speed based on the received third input.

Disclosed is a method for controlling arc welding where an arc is generated between a welding wire as a consumable electrode and an object to be welded. The method includes: keeping a wire feed speed at a predetermined constant speed in a steady-state welding period; and at a time point when welding termination is ordered, either switching the wire feed speed from the predetermined constant speed to a wire feed speed at which the welding wire is fed in alternating forward and backward directions, or decreasing the wire feed speed from the predetermined constant speed with time, and then switching the wire feed speed to the wire feed speed at which the welding wire is fed in alternating forward and backward directions at a time point when a predetermined time period has passed since when welding termination was ordered.

A wire conveying mechanism, preferably for a welding, cladding or additive manufacturing apparatus, with a slip clutch mechanism connectable to a motor.

Welding power supplies, wire feeders, and systems to measure a weld circuit resistance via communications over the weld circuit are disclosed. An example welding-type power supply includes: a power conversion circuitry configured to: convert input power to output a signal via a weld circuit; and convert the input power to output welding-type power via the weld circuit; a voltage monitor configured to measure a power supply output voltage of the signal; communications circuitry configured to receive, via the weld circuit, a communication of a second voltage measurement; and control circuitry configured to: determine a resistance and/or and inductance of a portion of the weld circuit based on the power supply output voltage measurement, the second voltage measurement, and a weld circuit current.

Some examples of the present disclosure relate to a cover cap for a welding torch. The cover cap is attached to a housing of the welding torch and rotatable between a closed position, where the cover cap covers an access port of the welding torch, and an open position, where the cover cap does not cover the access port. The welding torch may have welding components within the handle that may be accessed through the access port when the cover cap is in the open position. A cap holder may be used to hold the cover cap in the open position.

The invention relates to a contact tip (1) for arc welding with at least one channel (2) passing through the contact tip (1) for receiving a welding wire (3), the channel (2) having a non-round stellate, multi-lobular cross-section with convexly rounded sides.

A method for controlling a pull motor, the method including generating an error signal based on a difference between a signal representing a force applied on a wire by a push motor and a signal representing a desired force applied on the wire by the push motor; comparing a signal representing a force applied on the wire by the pull motor and the error signal, and generating an output signal based on the comparison; and controlling an armature current of the pull motor based on the output signal is disclosed.

Systems and methods are disclosed for welding systems employing a welding cable to provide welding power, communication signals, and wire feeder power to the wire feeder, and a single conductor wire feeder power and communication cable coupling the welding power supply to the wire feeder via dedicated connection circuitry in both the welding power supply and the wire feeder.