Abstract: The present disclosure relates to a wheel hub unit of a motor vehicle and to a method for producing such a wheel hub unit. The wheel hub unit includes a wheel hub and a contact flange firmly connected to the wheel hub. The contact flange includes a plurality of fastening elements for fastening a wheel rim, as well as a contact surface which is intended to come into mechanical contact, at least in part, with a brake hat of a brake disk when the brake disk is in the mounted state. At least part of the contact surface is provided with a thermally insulating coating. Alternatively, the entire contact surface is provided with the thermally insulating coating.

Abstract: A rotary positive displacement pump (1) comprises a pump enclosure (10) and at least one rotating member (20). The pump enclosure (10) has an inlet (12) and an outlet (14). The rotating member (20) is arranged for, when being rotated, causing a transfer of a liquid from the inlet (12) to the outlet (14). The rotary positive displacement pump (1) has internal sliding surfaces (16, 24, 26, 32, 34) that during operation are exposed to the liquid and are exposed to a sliding contact relative to other internal sliding surfaces (16, 24, 26, 32, 34) of the rotary positive displacement pump (1). At least a part of the internal sliding surfaces (16, 24, 26, 32, 34) has a surface region composed by a nitrided or nitrocarburized steel intercalated with a solid lubricant. A method for manufacturing a rotary positive displacement pump is also disclosed.

Abstract: A disc brake includes a brake disc made of light metal and a brake pad. The brake disc includes a brake track having formed therein a plurality of depressions which are distributed over a surface of the brake track. The brake disc is formed from a hypereutectic aluminum silicon alloy, which has a silicon content of 13 to 21 wt. % and a maximum content of 0.3 wt. % of copper. The brake pad is configured to act on the brake disc and includes a NAO friction material.

Abstract: Methods are provided for optimizing usage of water harvested or generated on-board a vehicle. An amount of water selected for injection or spraying purposes, as well as an order of water injection responsive to various vehicle operating conditions, is varied based on the amount of water to be delivered, as well as a current water level relative to a predicted future water level. The method allows water usage benefits to be maximized particularly when water availability is limited.

Abstract: The present disclosure relates to a hybrid lightweight brake disk and a method for producing the hybrid lightweight brake disk. The hybrid lightweight brake disk includes a brake chamber and a friction ring with at least one circular, outer friction surface. The method provides a brake chamber that includes a material containing an aluminum-forged alloy and a friction ring having a rapidly solidified aluminum alloy built up on an edge region of the brake chamber by using a laser deposition welding process or a 3D-printing process.

Abstract: Methods are provided for optimizing usage of water harvested or generated on-board a vehicle. An amount of water selected for injection or spraying purposes, as well as an order of water injection responsive to various vehicle operating conditions, is varied based on the amount of water to be delivered, as well as a current water level relative to a predicted future water level. The method allows water usage benefits to be maximized particularly when water availability is limited.

Abstract: The present disclosure relates to a wheel hub unit of a motor vehicle and to a method for producing such a wheel hub unit. The wheel hub unit includes a wheel hub and a contact flange firmly connected to the wheel hub. The contact flange includes a plurality of fastening elements for fastening a wheel rim, as well as a contact surface which is intended to come into mechanical contact, at least in part, with a brake hat of a brake disk when the brake disk is in the mounted state. At least part of the contact surface is provided with a thermally insulating coating. Alternatively, the entire contact surface is provided with the thermally insulating coating.

Abstract: The present disclosure relates to a hybrid lightweight brake disk and a method for producing the hybrid lightweight brake disk. The hybrid lightweight brake disk includes a brake chamber and a friction ring with at least one circular, outer friction surface. The method provides a brake chamber that includes a material containing an aluminum-forged alloy and a friction ring having a rapidly solidified aluminum alloy built up on an edge region of the brake chamber by using a laser deposition welding process or a 3D-printing process.

Abstract: The present disclosure relates to an additive manufacturing method. The method includes applying metallic powder in layers to a base surface. The base surface is formed in part by a base plate and in part by at least one insert arranged in a through opening in the base plate. The metallic powder layers are bonded in some region or regions by heating, whereby an object having connecting structures that are connected to the at least one insert is manufactured. After manufacture is finished, each insert is adjusted within a through opening relative to the base plate, thereby separating at least parts of the connecting structures from the insert.

Abstract: A method is proposed for producing a cylinder working surface of an internal combustion engine that is optimized in terms of friction and wear.

Abstract: A method is proposed for producing a cylinder working surface of an internal combustion engine that is optimized in terms of friction and wear.

Abstract: A method of manufacturing metallic components consisting of at least two different materials, one of them being an iron-based alloy and the other an aluminum-based alloy, and involving the steps of: depositing a metallic layer onto the body made from the iron-based alloy, said layer being an aluminum-based alloy, preferably based on Al—Si or Fe, placing the coated body in a casting mold and casting an aluminum-based alloy about the coated body. Prior to placing the body in the casting mold, the metallic layer of the body is sprayed and/or blasted with silicon powder and/or Borax (Na2B4O7—10H2O, hydrated sodium borate).

Abstract: A method of manufacturing metallic components consisting of at least two different materials, one of them being an iron-based alloy and the other an aluminum-based alloy, and involving the steps of: depositing a metallic layer onto the body made from the iron-based alloy, said layer being an aluminum-based alloy, preferably based on Al—Si or Fe, placing the coated body in a casting mold and casting an aluminum-based alloy about the coated body. Prior to placing the body in the casting mold, the metallic layer of the body is sprayed and/or blasted with silicon powder and/or Borax (Na2B4O7—10H2O, hydrated sodium borate).

Abstract: A process for the powder-metallurgical production of a workpiece by filling a binder-free and solvent-free, dry metal powder or ceramic powder into a mold, precompacting the powder by tapping and presintering it for 1/2 hour to 1 hour at 0.65 to 0.85 times the absolute melting temperature without significant shrinkage, adjacent powder particles being joined merely at their contact points by necking to give a skeletal formed body. The formed body is taken out of the mold and finish-sintered at at least 0.9 times the absolute melting temperature for at least 1 hour without additional support by a mold. Advantageously, the sintered body is additionally hot-isostatically pressed containerless in order to reach at least 98% of the theoretical density.

Abstract: A powder-in-tube method is disclosed for making a composite superconducting oxide wire which comprises loading a copper tube with a mixture composed of rare earth metal oxide, BaO.sub.2 and copper oxide or the finished superconductor powder and subjecting the loaded tube to drawing and a heat treatment at a temperature of up to 950.degree. C., wherein prior to loading the copper tube, the tube is oxidized at least on its inside to form a copper oxide layer having a thickness of 1 to 100 .mu.m and then a silver intermediate layer is inserted to the oxidized copper tube.

Abstract: Production of a sheathed wire or multiple-filament conductor composed of ceramic high-temperature superconductor by mixing Y.sub.2 O.sub.3, CuO and BaO.sub.2 or BaO.sub.2 +BaO, loading the powder mixture (3) into the interior of a metal sheath (1) lined with Ag intermediate layer (2), slowly heating to a maximum permissible reaction/sintering temperature of 950.degree. C. in a period of at least 0.1 h, holding the sintering temperature for at least 1 h, cooling down to 200.degree. C. at at most 10.degree. to 100.degree. C./h to form a conducting core (4) composed of YBa.sub.2 Cu.sub.3 O.sub.6.5-7.5. Variants having a layer composed of CuO, diffusion barrier composed of Ni, Ta, Nb, V or having Ag intermediate layer doped with AgO or BaO.sub.2. Preferably reactive sintering under a pressure of 10 to 10.000 bar as hot isostatic pressing. Variant: reactive annealing of the powder mixture under oxygen pressure of 10 to 3000 bar at 600.degree. to 950.degree. C.

Abstract: A composite gas turbine blade consists of an airfoil (1) in an oxide-dispersion-hardened nickel-based superalloy, in the condition of longitudinally directed coarse columnar crystals, and a shroud plate (6) or a shroud and a root (7), the latter items in a non-dispersion-hardened nickel-based superalloy (cast alloy). The gas turbine blade is manufactured by casting in and casting round, using the non-dispersion-hardened superalloy mentioned, the tip end (2) and root end (3)--provided with depressions (4) and/or protrusions (5)--of the airfoil (1), after preheating the latter to a temperature of between 50.degree. and 300.degree. C. below the solidus temperature of the lowest melting phase of the airfoil material. The casting temperature for this should be a maximum of 100.degree. C. above the liquidus temperature of the highest melting phase of this non-dispersion-hardened alloy. Any melting onto the airfoil (1) and any metallurgical connection is to be avoided.

Abstract: Method of manufacturing a workpiece of any given cross-sectional dimensions from an oxide-dispersion-hardened nickel-based superalloy available in the form of coarse-grained longitudinally directed columnar crystals by connecting previously very finely machined workpiece parts derived from a semi-finished product by diffusion-bonding using hot isostatic pressing, the workpiece parts being first heat-treated under a protective gas in the temperature range of 50.degree. to 100.degree. C. below the recrystallization temperature, under a pressure p.sub.k of not more than 5 MPa with the machined surfaces to be connected joined together, the workpiece then being heated at least to a critical temperature T.sub.K, above which no further cold working takes place, and the pressure then being gradually increased to the diffusion bonding pressure p.sub.max of 100 to 300 MPa with simultaneous increase in temperature are a heating rate of not more of 2.degree. C./min to the diffusion bonding temperature T.sub.D of 0 to 50.