In a setting assistance device for assisting setting of a welding condition, an input receiving unit receives a new welding condition that is specified, and a reliability output unit outputs a degree of appropriateness of the new welding condition relative to a plurality of well-tested welding conditions, which are welding conditions that have been used in the past and well-tested, in response to reception of the new welding condition by the input receiving unit.

An object of the present invention is to provide a welding system having a remote controller suitable for manually adjusting the feeding speed of a filler wire, the present invention provides a welding system including: a consumable electrode type or a non-consumable electrode type welding torch (20); a welding power supply device (40) which is configured to supply a welding current to the welding torch (20); a wire feeding device (30) which is configured to feed a filler wire (W) to the welding torch (20) or a filler guide (31) attached to the welding torch (20); a remote controller (50) which is configured to manually adjust a feeding speed of the filler wire (W); and a control device (60) which is configured to control the welding power supply device (40) and the wire feeding device (30), wherein the remote controller (50) has a sensor and is configured to output a signal corresponding to a load applied to the sensor (51) to the control device (60), and the control device (60) is configured to control the wire feeding device (30) so as to feed the filler wire (W) at a feeding speed set according to an output intensity of the signal.

A welding rod supply system for a welding unit, especially for a welding robot, includes a welding rod supply unit (12) to be coupled with a welding torch (14). The welding rod supply unit (12) includes a rod guide duct (18) formed therein as well as at least two welding rod-receiving cables (22, 24). The at least two welding rod-receiving cables (22, 24) adjoin the welding rod supply unit (12) and are each to be coupled with a welding rod feed unit and are each associated with a rod guide duct (26, 28) formed therein.

An ergonomic welding arm (1) includes a plurality of arm links (14, 20, 24) coupled by a plurality of joints (12, 18, 22). Each of the plurality of joints (12, 18, 22) is configured to allow the plurality of arm links (14, 20, 24) to be rotated about an axis with respect to a directly adjacent arm link (14, 20, 24). A first end of the welding arm (1) is configured to engage a support (4) for supporting the welding arm (1). A second end of the welding arm (1) is configured to engage a welding torch (10).

Burner for a welding apparatus having a non-melting electrode, a wire feed device for a welding wire and a power feed device for introducing an electric heating current into the welding wire that is supplied. The wire feed device can be activated in two directions of advance and an electric voltage applied by the power feed device to the welding wire can be regulated to ignite an igniting arc between the tip of the welding wire and the workpiece.

There is provided an arc welding control method for performing a forward/reverse feeding control of alternating a feeding rate of a welding wire between a forward feeding period and a reverse feeding period, and generating short-circuiting periods and arc periods to perform welding. The welding wire is fed forwardly upon starting the welding. The forward feeding is continued during a transient welding period from a time point at which the welding wire comes in contact with a base material and conduction of welding current is started to a time point at which convergence on a steady welding period is performed. The transient welding period is terminated at the short-circuiting period. The forward/reverse feeding control is started from the reverse feeding period after the termination of the transient welding period.

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 welding wire feeder includes a welding wire feed drive configured to drive welding wire towards a welding application, wire feed control circuitry coupled to and configured to control the welding wire feed drive. The welding wire feeder includes power conversion circuitry configured to receive polarized input power from a welding power source via input connections with defined polarities and to convert the polarized input power to welding output, sensing circuitry configured to detect the polarity of the polarized input power when connected to the input connections, and welding process control circuitry. The welding process control circuitry is coupled to the power conversion circuitry and the sensing circuitry. The welding process control circuitry is configured to provide the polarized input power to the power conversion circuitry only if the polarity of the polarized input power corresponds to the defined polarities of the input connections.

An arc welding method alternately generates a short-circuit state and an arc state. In the method, short circuits are generated also in the arc period. This more than doubles the total number of short circuits, which is the sum of the short circuits generated in the short circuit period and those generated in the arc period. This enables a thin plate to be arc welded at a higher speed, while reducing its burn-through.

The invention described herein generally pertains to a system and method related to influencing a direction of an arc within a welding operation. Within a hot wire welding operation, an arc is generated between an electrode and a workpiece and a welding wire is energized while being supplied to a puddle formed by the electrode in order to deposit the liquefied welding wire onto the workpiece. A welder system and/or method is provided that controls a direction of the arc based on at least one of a polarity of the welding wire (via a power supply that energizes the welding wire), a location of the welding wire in proximity to the arc, a synchronization and/or de-synchronization of a polarity of the welding wire with the electrode, an activation and/or a de-activation of energizing of the welding wire, or a combination thereof.