Abstract: The invention concerns a shaft component, which can be connected or is connected to the input or output side of a gear box in a gas turbine engine, in particular an aircraft engine, wherein the shaft component has partially a region comprising fiber reinforced plastic, the fibers in this region being arranged only in an angular range of +/?40° to 50°, in particular of +/?42° to 48°, most particularly +/?45°, in relation to the main axis of rotation of the shaft component. The invention also concerns a method for producing a shaft component and a gas turbine engine.

Abstract: A drive shaft component, which can be connected or is connected to the input side of a gear box in a gas turbine engine, in particular an aircraft engine, characterized in that the drive shaft component has partially a region including fiber reinforced plastic, the fibers in this region being arranged only in an angular range of +/?40° to 50°, in particular of +/?42° to 48°, most particularly +/?45°, in relation to the main axis of rotation of the drive shaft component. The invention also concerns a method for producing a drive shaft component and a gas turbine engine.

Abstract: A gear-box casing in a gas turbine engine, in particular an aircraft engine, characterized in that the gear-box casing has partially a region including fiber reinforced plastic, the fibers in this region being arranged only in an angular range of +/?40° to 50°, in particular of +/?42° to 48°, most particularly +/?45°, in relation to the main axis of rotation of the gear-box casing. The invention also concerns a method for producing a gear-box casing and a gas turbine engine.

Abstract: A method for manufacturing thermally stressed engine components having a geometrically complex structure includes metal injection molding metal powder mixed with a binder to form green compacts of individual parts, which are debindered to form brown compact sections which are joined together to form a multi-part brown compact which are sintered in the assembled state. The brown compact sections have differing shrinkage properties in the sintering process, depending on the metal powder used, with a greater shrinking first brown compact section being automatically pressed against a second brown compact section during sintering. Connecting elements having positively engaging projections and recesses are provided at joining surfaces of the brown compact sections and have differing shrinkage such that during sintering of the assembled brown compact, the brown compact section with projections undergoes a greater shrinkage than the brown compact section with recesses.

Abstract: For near net shape manufacturing of a high-temperature resistant component of complex design a high melting-point part of an intermetallic phase provided as a metal powder is mixed with a binder, and from the feedstock such formed a green compact substantially matching the final contour is produced by metal injection moulding, into the pores of said compact that remain after removal of the binder the low melting-point part of the intermetallic phase is infiltrated. The brown compact thereby created is mechanically processed, if required, and subjected to a specific heat treatment depending on the metallic phases used in order to create the intermetallic phase. This permits engine components consisting of intermetallic phases and having a geometrically complex structure to be manufactured cost-efficiently.

Abstract: For near net shape manufacturing of high-temperature resistant engine components of geometrically complex design consisting of an intermetallic phase, a low melting-point metallic phase in the molten state or in a temperature range near the molten state is mixed with a high melting-point metallic phase provided as a metal powder, and the mixture is mechanically treated under the effect of kneading and shear forces, thereby heating it up and reducing its viscosity. In a subsequent injection moulding process the engine component substantially matching the final contour is formed and mechanically finish-machined, if required, and afterwards subjected to a heat treatment for creating an intermetallic phase.

Abstract: The present invention relates to a method for manufacturing thermally stressed engine components having a geometrically complex structure by metal injection moulding of metal powder mixed with a binder, by which method individual parts of the engine component are produced as separately moulded green compact sections and then as debindered brown compact sections which are joined together to form a two-part or multi-part brown compact and sintered in the assembled state, with the brown compact sections having differing shrinkage properties in the sintering process, depending on the type and size of the metal powder used, with at least one more heavily shrinking first brown compact section being automatically pressed against at least one second brown compact section during sintering of the assembled brown compact.

Abstract: Injection molding tool for the manufacture of a plastic element sheathed with a sheet-metal shell (8), where the gate (12) which is designed as an integral part of the lower mold half (9) for correct positioning and supply of the plastic melt projects beyond the inner surface of the mold half (9) into the sheet-metal shell having a positioning opening (14), such that the plastic melt is discharged inside the sheet-metal shell and does not flow past it.

Abstract: Injection moulding tool for the manufacture of a plastic element sheathed with a sheet-metal shell (8), where the gate (12) which is designed as an integral part of the lower mould half (9) for correct positioning and supply of the plastic melt projects beyond the inner surface of the mould half (9) into the sheet-metal shell having a positioning opening (14), such that the plastic melt is discharged inside the sheet-metal shell and does not flow past it.