Sintered gear wheel composite and method for its production

摘要

Powder-metallurgically producing a rotational body, comprises: (a) compacting a first starting body from metal powder; (b) forming a second starting body from metal, separately from the first starting body; (c) placing the starting bodies against each other in axial contact via end faces with respect to a longitudinal axis of the rotational body; and (d) permanently and firmly sintering the first starting body and the second starting body to each other by collective sintering. Powder-metallurgically producing a rotational body, comprises: (a) compacting a first starting body from metal powder; (b) forming a second starting body from metal, separately from the first starting body; (c) placing the starting bodies against each other in axial contact via end faces with respect to a longitudinal axis of the rotational body; (d) permanently and firmly sintering the first starting body and the second starting body to each other by collective sintering, where the first starting body is compacted from an aluminum-based powder and the second starting body is formed from an aluminum material, and the starting bodies are sintered with each other at their respective end faces. Independent claims are also included for: (1) a sintered composite, produced by the above mentioned method, comprising a hollow wheel (1) comprising a central longitudinal axis and at least one wing (3), which protrudes in a direction transverse to the longitudinal axis, and a drive disc (5) placed axially onto the hollow wheel and non-rotationally connected to the hollow wheel, where the hollow wheel and the drive disc are formed separately, respectively from an aluminum-based material, sintered and non-rotationally connected to each other at end faces, which face each other axially, and at least one of the hollow wheel, and the drive disc is compacted from an aluminum-based powder; and (2) a stator for a swing-wing adjuster for adjusting the rotational angular position of a valve control shaft relative to a crankshaft of an internal combustion engine, where the swing-wing adjuster comprises a stator coupled to the crankshaft, which is rotary-driven, and a rotor (15), which is driven by the stator and is coupled to the valve control shaft, and the stator comprises a sintered composite.