Abstract: A method of adhesively bonding a first component to a second component, which comprises a peripheral zone with which the first component is adhesively bonded in overlapping manner is provided.

Abstract: A method for repairing/manufacturing an integrally bladed rotor for a turbine or turbo engine, in which, in the case of a repair, at least one vane section to be replaced is removed leaving a stub section to which a replacement vane section is to be welded, and, in the case of manufacturing, a carrier to be provided with vanes has stubs projecting over its peripheral surface, to each of which a vane is to be welded, includes the steps of: arranging an inductor around the front face of the stub section or stub; positioning a replacement vane section or vane at a small radial distance from and aligned with the stub section or stub; and welding the replacement vane section or vane to the stub section or stub, respectively, in a protective gas atmosphere by exciting the inductor with high-frequency current and moving the opposing heated part surfaces together.

Abstract: A process for manufacturing a wheel for a motor vehicle, in which a wheel spider and a rim ring are connected with one another by means of friction welding. At least one of these wheel parts consists of a magnesium alloy. The controlling of the speed of the start of the friction, of the friction and of the compression of the friction welding process, particularly of the deformation capacity, takes place as a function of physical characteristics of the magnesium alloy.

Abstract: Process and device for the friction welding of workpieces that consist of different materials or possess different material properties, especially different hardnesses and/or melting points. The workpieces are rotated over a limited angle of rotation of less than 1,080.degree., preferably 290.degree. to 430.degree., relative to one another during the friction process. The angle of rotation is controlled via the friction time and the switching off of the rotating drive. The more resistant workpiece is preferably rotated and is leveled off on its face before the friction welding.

Abstract: The invention relates to a transport device for welding wire feed for welding equipment, in particular arc sheild-gas welding tools on manipulators. The welding wire is transported from a magazine or reel with the aid of two separate drives. The main drive determines the feed and it is mounted near the application welding die, while the auxiliary is arranged spaced therebehind. The motor of the main drive is controlled to a constant speed corresponding to the selected feed, while the auxiliary drive acts on the welding wire with slip. The motor of the auxiliary drive is also controlled to a constant speed, the speed adjustment of the drives being, however, control-technologically connected for maintenance of a certain difference of the transport speeds.

Abstract: The invention relates to a device for welding of metallic parts with tubular cross section with an electric arc, having at least two magnets with the same polarity, surrounding the weld seam line annularly with their pole faces. In such a welding device, the pole faces are easily contaminated with weld splashes, during welding. Such contamination has a negative influence on the electric arc path and the weld seam line is deteriorated. In order to avoid such contamination, the invention proposes that the pole faces (4) be provided each with a covering protection ring (5), presenting an inner surface (7) inclined towards the weld seam line.

Abstract: Two coaxially aligned workpieces of ferromagnetic material, axially separated by a narrow peripheral gap across which a weld seam is to be formed with the aid of an arc moving along that gap, are engaged by holders including at least one set of two or more ferromagnetic gripper jaws whose confronting faces are magnetized with like polarity by respective excitation windings surrounding extensions of these jaws. The resulting magnetic field extends axially within the workpiece held by the gripper jaws in a loop which passes generally radially through the peripheral gap, either on account of a bucking magnetic field (which may be generated by a similar set of jaws gripping the other workpiece) or by virtue of pole shoes of the opposite polarity juxtaposed with the jaw extensions and approaching the gap.

Abstract: An electrical arc welding device for two workpieces to be welded together along an annular weld seam, e.g. ends of pipe sections, and in which a magnet arrangement surrounds the welding-seam path. According to the invention, a magnetizable ring is formed by the inwardly extending poles of a plurality of magnets having flat cores and surrounded by coils for electromagnetically energizing the cores.

Abstract: A pair of workpieces are welded together by passing between them an arc which is guided by a magnetic field to rotate on the workpieces. Immediately after striking of the arc the field strength of the magnetic field is relatively great and a relatively great current is similarly passed through the arc. During a subsequent main phase, before fusing of the surfaces to be welded, the field strength and the current of the arc are reduced to a fraction of their values for even heating of the surfaces to be welded together. Finally during a terminal phase the current of the arc and the field strength are again raised to a higher level to completely fuse the two surfaces which can then be welded together once the arc is interrupted.

Abstract: A device for welding two metallic hollow bodies together in end-to-end connection by means of an electric arc moved by the effect of an external magnetic field along the welding joint, comprises, clamping means engaged with the bodies to clamp them in end-to-end relationship with the respective ends to be joined disposed closely adjacent. In addition, a magnetic coil is disposed within at least one of the bodies or it is advantageously located with a pole piece disposed in the gap between the two bodies and overlapping each of the bodies so as to produce a magnetic field in the vicinity of the ends to be joined. The pole shoe of the magnet advantageously comprises a pole piece which is conformable to the dimensions of the shape of the welded joint.