Goods & Services

Metal welding bolts for use in stud welding, metal welding pins for use in stud welding, metal welding rivets for use in stud welding, metal welding nuts for use in stud welding, metal welding sleeves for use in stud welding Electric stud welding apparatus and parts thereof, stud welding current generators and parts thereof, electric stud welding machines and parts thereof

Abstract

A welding element is formed from a sleeve (10), which is cold-pressed from a thin metal sheet and the open end of which forms the welding face, which is optionally provided with a flange (11). A thread (13) may be rolled in on the outer face of the sleeve (10). In spite of the small amount of material used, this welding element is stable as a result of the forming process. On the other hand, because of the thinness of the wall of the welding element, the MARC welding method, which operates with a low energy input, is particularly suitable for welding-on operations.

IPC Classes  ?

• B23K 9/20 - Stud welding
• B21D 22/20 - Deep-drawing
• B21D 53/52 - Making other particular articles haberdashery, e.g. buckles, combsMaking other particular articles pronged fasteners, e.g. staples metal slide-fastener parts fastener elementsAttaching such elements so far as this procedure is combined with the process for making the elements
• B21K 1/70 - Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
• B23K 35/02 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
• F16B 37/06 - Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting

Abstract

An apparatus for the mounting of a flat welding bit (13) on a welding apparatus comprises an electrically conductive receiving part (30) with a contact surface (31) for lying on one face of the welding bit (13), with two opposing guide surfaces (32) for lying on lateral edges of the welding bit, and with a stop surface (33) for the end of the welding bit which is facing away from the welding site. A spring pretensioned roller (41) presses the welding bit (13) against the contact surface (31) and thereby effects not only a good conductive connection but also a secure mounting of the welding bit in the provided orientation. The roller (41) simultaneously reduces the frictional forces produced when the welding bit (13) is pushed into the support.

IPC Classes  ?

• B23K 9/20 - Stud welding
• B21D 1/10 - Removing local distortions of specific articles made from sheet metal, e.g. mudguards
• B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work

Abstract

In order to fix a welding element (12) comprising an annular front surface (16) to a workpiece (11), a welding device operating with a magnetic field radially penetrating the annular welding gap is used. Said magnetic field is generated by a solenoid (21) through which a welding current can flow, and is guided via an outer field former (26) and an inner magnetic core (23). The magnetic coil (21), the field former (26) and the magnetic core (23) are fixed to the welding element holder (13) which guides the welding flow, and are moved by the holder in relation to the workpiece (11). In this way, the intermediate space normally required between the magnetic coil (21) and the welding element holder (13) is no longer necessary.

IPC Classes  ?

• B23K 9/20 - Stud welding
• B23K 9/08 - Arrangements or circuits for magnetic control of the arc

Abstract

The invention relates to a device for welding an annular welding element (12) to a workpiece, when welding the annular welding element (12) in alignment with a borehole in the workpiece (11). A forming gas F supplied through the welding element is oriented towards the inner edge of the borehole (17) by means of a guiding element (47), in order to form the weld pool at this point and thereby to obtain a clean weld seam inside the borehole and to prevent the atmosphere from being sucked through the borehole (17) into the weld gap.

IPC Classes  ?

• B23K 9/20 - Stud welding
• B23K 9/32 - Accessories
• B23K 101/04 - Tubular or hollow articles