A shear stud welding system is disclosed. The system comprises a shear stud holder, a robotic arm and a microcontroller. The shear stud holder comprises a turret and a first motor coupled to the turret and configured to rotate the turret about an axis to a predetermined angle such that a shear stud among the plurality of shear studs is at a dispensing position. The robotic arm is configured to transfer the shear stud from the shear stud holder to a workpiece. The microcontroller is configured to control the movement of the robotic arm to pick up the shear stud from the dispensing position and transfer the shear stud holder to the workpiece at a welding position and cause the first motor to rotate the turret to a predetermined angle to cause a shear stud among the plurality of shear studs assume the dispensing position.

Joining apparatus for joining joining elements onto workpieces, comprising a joining element holding device, which is configured to radially hold a joining element, and comprising a loading pin arrangement, which is configured to slide a joining element axially into a holding position in the joining element holding device, and/or to axially support the joining element during a joining process, wherein the loading pin arrangement has a loading pin, which is slidable by means of a loading pin actuator arrangement in the direction of the joining element holding device. The loading pin arrangement is here designed to variably establish a loading pin stroke of the loading pin between at least two stages, so that in a first stage the loading pin is displaceable less far in the direction of the joining element holding device than in a second stage.

A control unit and method for a joining system having at least one joining station, which is designed to join at least one first joining element to a workpiece, determines actual data with respect to a first joining element joined to a current workpiece by the joining station. The control unit and method determine, in accordance with the actual data, a subsequent control instruction for the joining station for joining a first joining element to a subsequent workpiece.

A method for welding a welded part to a component is carried out as arc ignition welding by use of direct current, having a bias current phase in which an arc is formed between the negatively polarized welded part and the component, and a subsequent main current phase for melting material to the joint. The welded part: a) is a galvanized sphere made of C10C having a roundness G500, wherein the size of any zinc inclusions under the surface of the sphere equals 10 micrometers at maximum, orb) is formed by welding a galvanized sphere made of C10C having a roundness G500, wherein the size of any zinc inclusions under the surface of the sphere equals 10 micrometers at maximum, to a connection element.

Protective gas mouthpiece for a connection device, having a base member which has an axial opening and a mouth arranged around the opening and which can be placed on a workpiece on which a connection process is intended to be carried out, wherein the opening adjacent to the mouth defines a cleaning space into which protective gas can be introduced and which, when the connection process is carried out, can be axially delimited by the workpiece which covers the opening. The protective gas is introduced into the cleaning space in such a manner that a main flow direction of the protective gas in a radial centre of the cleaning space is orientated in a substantially radial and unidirectional manner.

An anchoring assembly for anchoring a liner of a cured lining material arranged to be applied in liquid form to a metal object provided with the anchoring assembly, the anchoring assembly including an elongated mounting pin and a ferrule provided at a first end thereof, wherein the pin is arranged to be mounted at the first end to the metal object, the anchoring assembly further including a plurality of spaced anchor fins connected to the pin at a second end and extending radially outward relative to the pin, wherein the ferrule includes a radially outwardly extending place holder part arranged to be held by a ferrule holder during mounting of the pin at the first end to the metal object.

A method for joining studs to workpieces, in particular for the purpose of stud welding, comprising the steps of acquiring a distinguishing dimension of a stud to be joined by the application of a sensing element to the stud and through measurement of a travel distance of the sensing element as it is applied to the stud; and then joining the stud to a workpiece, if the dimension of the stud is within an allowable tolerance range, and the allowable tolerance range is adapted in dependence on the travel distance of the sensing element measured during a preceding method step.

An anchoring assembly for anchoring a liner of a cured lining material arranged to be applied in liquid form to a metal object provided with the anchoring assembly, the anchoring assembly including an elongated mounting pin and a ferrule provided at a first end thereof, wherein the pin is arranged to be mounted at the first end to the metal object, the anchoring assembly further including a plurality of spaced anchor fins connected to the pin at a second end and extending radially outward relative to the pin, wherein the ferrule includes a radially outwardly extending place holder part arranged to be held by a ferrule holder during mounting of the pin at the first end to the metal object.

Joining apparatus for joining joining elements onto workpieces, comprising a joining element holding device, which is configured to radially hold a joining element, and comprising a loading pin arrangement, which is configured to slide a joining element axially into a holding position in the joining element holding device, and/or to axially support the joining element during a joining process, wherein the loading pin arrangement has a loading pin, which is slidable by means of a loading pin actuator arrangement in the direction of the joining element holding device. The loading pin arrangement is here designed to variably establish a loading pin stroke of the loading pin between at least two stages, so that in a first stage the loading pin is displaceable less far in the direction of the joining element holding device than in a second stage.

The invention relates to a refractory anchor comprising an elongated mounting pin having a first end and a second end opposite to the first end seen in the longitudinal direction of the elongated mounting pin, wherein the first end of the elongated mounting pin is weldable to an object, the refractory anchor further comprises two anchor fins of which each has a first anchor fin section having a first side and an opposing second side located at a distance of the elongated mounting pin with respect to the first side, wherein the first side is connected to the elongated mounting pin.