Abstract:
A spot weld joint of a balancing plate on the exterior side of a rotationally symmetrical, rotating hollow body such as a motor vehicle drive shaft. In order to also be able to balance thin-walled hollow bodies in a secure manner with respect to the process, as well as rapidly and durably in the case of different pairings of material of the hollow body and the balancing plate, the weld joint is constructed as an ultrasonic weld. The zone of thermal influence of the weld joint extends from the contact surface between the balancing plate and the hollow body maximally by approximately 0.3 mm, preferably approximately 0.1 to 0.15 mm, into the wall of the hollow body. Expediently, the zone of thermal influence extends deeper into the balancing plate than into the wall of the hollow body. Irrespective of the hollow shaft material--steel, aluminum or plastic--, the balancing plate may consist of a metal of high density, particularly of steel, brass or copper. In the case of fiber-reinforced hollow plastic shafts, the balancing body may also consist of plastic or of a metal strip coated with plastic on the contact side or of a sintered-together metal/plastic composite material.
Abstract:
For a method for the formation of a frangible zone for fracture separation of a part, namely a connecting rod for internal combustion engines, by which method, in a fracture plane for the intended triggered break-away, a frangible zone is formed along a side of the plane, through which, ordered depressions with ribs are developed from the surface, there is proposed that in the case of a part comprised of ductile metal, the ribs are at least sectionally embrittled, i.e. penetratingly hardened, for intended formation of initial starting cracks.
Abstract:
A new adjustable collet for stud welding employs a plurality of electrically energizable jaws coordinated to firmly grasp studs of various shapes, sizes and orientations while welding them to a work surface. This adjustable collet will also ensure better contact with the stud and thus reduce the likelihood of arcing and faulty welds. Premature collet wear will also be averted by reducing the amount of sliding contact between the collet and the stud.
Abstract:
In a seam welding process for overlapping sheets, in particular for welding can bodies, the welding force is momentarily reduced upon each insertion of a can body between the welding rollers. This keeps the welding pressure constant even at the start of a can body. In this way the power input to the sheet can be kept constant even at the start of a can body, and the weld quality even at the start of a can body satisfies requirements.
Abstract:
A full face wheel assembly comprises a full face disc and a rim. The disc is preferably cast from aluminum whereas the rim is rolled from aluminum strip stock. The full face disc comprises an outboard bead seat flange, an outboard bead seat and an outboard well side wall. The disc may also include lightener pockets or a continuous re-entrant channel adjacent the outboard bead seat. The rim comprises an inboard bead seat flange, an inboard bead seat, an inboard leg, and a deep well. The disc and rim are welded together in the deep well or bead seat regions by gas metal arc welding, electron beam welding or other suitable welding technique.
Abstract:
A method of forming a tank system and a tank system formed thereby wherein the tank system comprises a plastic tank covered by a metal shell. The inventive method comprises the steps of: (a) covering a first portion of the plastic tank with a first metal shell piece having a first edge wherein the interior shape of the first metal shell piece corresponds to the exterior shape of the first portion of the plastic tank such that the exterior surface of the plastic tank is positioned in close proximity to the interior surface of the first metal shell piece; (b) covering a second portion of the plastic tank with a second metal shell wherein the interior shape of the second metal shell piece corresponds to the exterior shape of the second portion of the plastic tank such that the exterior surface of the plastic tank is positioned in close proximity to the interior surface of the second metal shell piece, and wherein the second metal shell piece has a second edge corresponding to the first edge of the first metal shell piece such that, when the first and second shell pieces are placed over the plastic tank, the second edge is positioned adjacent the first edge; and (c) welding the first and second shell pieces together along the first and second edges.
Abstract:
An apparatus for weld build-up on a surface of revolution within a bore has a head assembly, an elongated line shaft, a step assembly and a traveling assembly. The head assembly has a housing that may be fixedly mounted in a region spaced from the surface of revolution, the housing defining a chamber with an axis in alignment with an axis of revolution. It also has a spindle mounted for rotation within the chamber, coaxial with the axis of revolution. The line shaft is coupled to the spindle and extends for coaxial rotation within the bore in a region of the surface of revolution. The step assembly is fixedly mounted upon the line shaft. The traveling assembly is mounted also upon the line shaft and disposed for rotation within the bore. The traveling assembly consists of a wire reel, a wire feeder, and an electrical welding torch assembly that terminates in a torch nozzle. The step and traveling assemblies are fixed upon the line shaft for rotation within the bore, and the axial spacing between step assembly and the traveling assembly along line shaft are adjustable.
Abstract:
A number of rare earth-cobalt permanent magnet segments are temporarily secured together by means of a tool. Before securement the segment surfaces at each interface are pre-tinned. A solder pre-form in the shape of a "wagon wheel" rests on one transverse end of the magnet so that the spokes of the pre-form overlie the interface joints. The magnet is then lowered into a gradually heated glycerine bath until the solder melts and directly flows over each interface. Upon slow cooling of the cylinder, metallurgical bonding is effected between the various segments of the magnet.
Abstract:
To alter the surface qualities of nonreactive materials, such as polypropylene and polyethylene in order to provide a means for bonding the plastic to metal, hard granular materials of oxides or carbides are partially impregnated into the surface of the plastic by application of heat and pressure so that granular edges remain exposed. Thereafter, a silver coating is applied over the impregnated plastic to interlock with the granules. The composite layered plastic then provides a means for soldering or bonding the plastic to a metallic coupling using either a bonding cement or a low temperature solder such as bismuth, lead, or tin based solder. Abrasion-resistant qualities also are improved by impregnating the internal surfaces of a plastic tube in order to improve its wear-resistance during transporting abrasive slurries of sand, coal, and the like.
Abstract:
A method of cold welding of workpieces formed as axially symmetric bodies of rotation, wherein the workpieces are pressed into each other by applying an axial stress to at least one of the workpieces, and the workpieces are imparted a relative turn in a plane perpendicular to the direction of the axial stress.