A contact chip for welding, having a housing member with a tapered tip, an abrasion-resistant core member in the housing member, and an adapter member at the rear end of the housing member. The housing member has a first insertion hole as an outlet for a welding wire. The core member has a second insertion hole through which the welding wire is inserted. The adapter member has a third insertion hole through which the welding wire is inserted, and also has on the inner wall surface of its tip end part a taper surface whose diameter gradually decreases toward the tip end so that a space part is formed in the front of the core member. The welding wire is inserted through the first to third insertion holes and the space part so that the wire protrudes from the tip end of the contact chip.

A welding system and method is provided which moves a welding consumable during a welding operation, where the consumable is moved downstream of the welding contact tip during welding. A wire manipulation device is provided which causes the consumable to move after it has left the contact tip and before the consumable reaches the weld puddle of the welding operation. The consumable can be moved in different patterns during welding and the welding process parameters, such as wire feed speed, etc. can be changed based on the movement of the wire.

A contact tip assembly having an electric contact unit containing a contact tip with an electric energy source, where the electric contact unit is positioned at a distance away from the outlet opening of a guide.

A welding system and a method of control. The welding system may include a weld gun that may have an induction coil and a guide sleeve. The induction coil may heat a welding electrode in the weld gun. The guide sleeve may inhibit the welding electrode from engaging the induction coil.

Reversible contact tips and welding assemblies for reversible contact tips are disclosed. An example welding contact tip includes a first axial end portion having a welding wire outlet of an inner bore of the welding contact tip, a threaded middle portion adjacent the first axial end portion, wherein the threaded middle portion comprises external threads configured to mate with internal threads of a gas diffuser of a welding torch, and a second axial end portion adjacent the threaded middle portion.

A method for manual welder training that includes providing a welding training apparatus that includes both hardware and software components and that is operative to gather and process data in real time, wherein the data is derived from an actual training exercise conducted by a welding trainee; selecting training objectives from a predetermined number of predefined objectives; initializing a curriculum, wherein the curriculum is based on the selected training objectives; performing at least one training exercise, wherein the training exercise is a component of the curriculum; providing real-time feedback to the trainee, wherein the real-time feedback is based on the performance of the trainee during the training exercise; evaluating the performance of the trainee based on data gathered and processed during the training exercise; optionally, adapting the curriculum based on the trainee's performance evaluation; and awarding credentials or certifications to the trainee following successful completion of the curriculum.

Systems, methods, and apparatus to preheat weld wire are disclosed. An example welding torch includes a first contact tip configured to conduct welding current to a consumable electrode, a second contact tip configured to conduct preheating current to the consumable electrode, and a plurality of liquid cooling assemblies configured to conduct the preheating current and to conduct the welding current to the consumable electrode.

A handheld welding torch for electric-arc welding with a melting welding wire has a wire feed unit for conveying the welding wire along a conveying axis arranged within a torch housing with a handle region, the wire feed unit including a drive unit with a rotation axis arranged vertically with respect to the conveying axis of the welding wire, a drive roller with a rotation axis and a counter roller with a rotation axis, and having a torch push-button. The wire feed unit has a gear stage and the rotation axis of the drive unit is arranged aligning with the conveying axis of the welding wire.

A contact tip assembly having an electric contact unit containing a contact tip with an electric energy source, where the electric contact unit is positioned at a distance away from the outlet opening of a guide.

A method for manufacturing an additively-manufactured object, in which a plurality of weld beads obtained by melting and solidifying a filler metal are deposited on a base portion to build a built-up object, includes: a support bead forming step of forming a support bead on the base portion; and a depositing step of depositing a weld bead on the support bead. When the support bead is formed to be inclined from a vertical direction in the support bead forming step, a ratio H/W of a height H to a width W of the support bead is set to 0.35 or more.