Abstract:
Zur Verkürzung der Prozesskette beim Materialabnehmenden Bearbeiten, insbesondere einer Kurbelwelle (1), nach der Grobbearbeitung, und insbesondere nach dem Härten, wird erfindungsgemäß vor allem die Kombination aus Singlepoint-Drehen mit nachfolgendem Tangentialdrehen und/oder Finishen und/oder Fein-Trockenschleifen und/oder elektrochemischem Ätzen vorgeschlagen.
Abstract:
A crankshaft having a crankpin, a crank journal, and a crank arm for linking the crankpin and the crank journal, includes a pin fillet portion located between the crankpin and the crank arm; and a journal fillet portion located between the crank journal and the crank arm. At least one of the crankpin and the crank journal has a diameter of no less than about 20 mm and no more than about 40 mm. At least one of the pin fillet portion and the journal fillet portion contains a quench-hardened layer having a thickness of no less than about 1 mm and no more than about 2 mm in the vicinity of a surface thereof. The crankpin and the crank journal substantially do not contain any quench-hardened layer having a thickness exceeding about 2mm in the vicinity of a surface thereof.
Abstract:
The present invention relates to a method for manufacturing objects of metallic material and including a base material (2), an intermediate layer (8) and an outer layer (15) formed by surface treatment of the intermediate layer (8). In said method the base material (2) is surface treated with a laser treatment process (Y1) for generating the intermediate layer (8) thereon, whereby the metallic material (4) in the intermediate layer (8) is selected to have such properties that said layer (8) can be surface treated with a second surface treatment process (Y2) different from the laser treatment process (Y1), whereby the intermediate layer (8) is surface treated with said second surface treatment process (Y2) for generating or forming the outer layer (15) thereon.
Abstract:
A procedure is described for the repair of gas turbine engine turbine components which involves the repair of cracks and other defects and the replacement of worn or eroded material followed by the laser melting of a thin layer of metal on the surface of the component in those areas requiring reconfiguration to return to the original dimensions. The reconfiguration by laser melting is also useful for new articles which are out of tolerance, and generally for shaping objects from metal sheet or plate.
Abstract:
The invention refers to manufacturing engineering, in particular to shipbuilding and ship repair. Said invention applies to internal combustion engines, such as marine diesel engines. The invention relates to an apparatus in above described fields for repair and renovation of the crankshaft journal (bearing) surfaces, by means of laser build-up (cladding). Invented apparatus and method is designed to perform journals build-up (cladding) operations directly in the engine housing, without removing the crank-shaft from the engine.
Abstract:
The invention relates to a method for coating a surface of an Fe based, hardenable sintered, sinter forged, or forged component, particularly for internally coating the large end bore of a motor vehicle connecting rod with a bearing coating, wherein the coating material applied to the component surface is converted to a melted liquid state during the coating process, wherein according to the invention a material bond that is durable even under high loads is achieved between the coating and the base material of the sintered or forged component in a simple manufacturing method, in that the component surface is briefly heated during the coating process in the unprocessed state of the component, above the austenitization temperature to a temperature level having greatly increased diffusion speed, within the limits of the exterior boundary zone having less carbon due to manufacturing conditions.
Abstract:
The invention relates to a laser station for structuring inner circumferential surfaces (34) of a workpiece, for example a cam, a camshaft or an eye of a connecting rod, having at least two mutually offset 3-D lasers.
Abstract:
A liquid phase diffusion bonding method for a metal machine part superior in the quality of the joint and the productivity enabling the bonding time to be shortened, achieving homogenization of the bonding structure and improving the tensile strength, fatigue strength, and joint quality and reliability. This liquid phase diffusion bonding method of a metal machine part is characterized in terposing an amorphous alloy foil for liquid phase diffusion bonding at bevel faces of metal materials, performing primary bonding by melt bonding said amorphous alloy foil and said metal material by resistance welding to form a joint, then performing secondary bonding by liquid phase diffusion bonding by reheating said joint to at least the melting point of said amorphous alloy foil, then holding it there to complete the solidification process of said joint.
Abstract:
An apparatus for processing a drive shaft (11) for a vehicle, the drive shaft (11) having a longitudinal axis and first and second ends. There is provided a drive arrangement for coupling to the first end of the drive shaft and applying a rotatory force to the drive shaft (11). A second end support arrangement rotationally supports the drive shaft (11) at its second end. Also, a transaxial drive (35) for applying a transverse force in a direction transverse to the longitudinal axis of the drive shaft (11). The transaxial drive includes a transaxially displaceable roller arrangement for communicating with an outer surface of the drive shaft (11) in a region thereof intermediate of the drive arrangement and the support arrangement, via which the transverse force is applied. The transverse force has a magnitude sufficient to cause bending of the drive shaft (11) in the direction transverse to the longitudinal axis thereof as the drive shaft is rotated. In some embodiments, the transverse force has a magnitude sufficient to cause plastic deformation of the drive shaft (11) in the direction transverse to the longitudinal axis thereof as the drive shaft is rotated.