A pre-swirl nozzle carrier for a gas turbine engine, includes: a wall having front and rear sides, and a multiplicity of pre-swirl nozzles formed in the wall and which each have a flow passage, wherein the flow passage has an inlet opening at the front side and an outlet opening at the rear side. The flow passages are provided and designed to discharge air, which has flowed in via the inlet opening, with swirl from the outlet opening. It is provided that the inlet opening is surrounded by a periphery which, at least in certain sections, has a region with a convex curvature adjacent to the flow passage and has a region with a concave curvature adjacent to said region with a convex curvature. The invention furthermore relates to a method for producing a pre-swirl nozzle in a pre-swirl nozzle carrier.

The invention relates to a work station for electrochemically machining a workpiece, having a number of recesses, including a base structure; a module which is fastened to the base structure and is configured to electrochemically machine the workpiece. A workpiece holder is fastened to the base structure. The workpiece holder is movable relative to the base structure along a feed axis which is parallel to the axis of rotation of the module. The module includes an electrode carrier arrangement, which is coupled to the module base body so the electrode carrier arrangement can be rotated together with the module base body about the axis of rotation of the module. The electrode carrier arrangement has a carrier frame and an electrode frame, where at least one electrode is detachably fastened to the electrode frame.

The invention relates to a work station for electrochemically machining a workpiece, having a number of recesses, including a base structure; a module which is fastened to the base structure and is configured to electrochemically machine the workpiece. A workpiece holder is fastened to the base structure. The workpiece holder is movable relative to the base structure along a feed axis which is parallel to the axis of rotation of the module. The module includes an electrode carrier arrangement, which is coupled to the module base body so the electrode carrier arrangement can be rotated together with the module base body about the axis of rotation of the module. The electrode carrier arrangement has a carrier frame and an electrode frame, where at least one electrode is detachably fastened to the electrode frame.

The present invention relates to a method for the production of drill holes in difficult to machine materials, in which a removal of material takes place in order to produce a drill hole by electrochemical erosion of material by an electrode that is moved in the longitudinal direction of the drill hole being produced in the direction onto the material to be processed at a feed rate, wherein the drilling has at least two steps, wherein, in the first step, the electrochemical processing takes place, and wherein, in a second step, the further processing of the drill hole to the final diameter takes place by machining processing or by erosion or by an electrochemical processing.

The present invention relates to a method for the production of drill holes in difficult to machine materials, in which a removal of material takes place in order to produce a drill hole by electrochemical erosion of material by an electrode that is moved in the longitudinal direction of the drill hole being produced in the direction onto the material to be processed at a feed rate, wherein the drilling has at least two steps, wherein, in the first step, the electrochemical processing takes place, and wherein, in a second step, the further processing of the drill hole to the final diameter takes place by machining processing or by erosion or by an electrochemical processing.

An apparatus for electrical discharge machining process is disclosed. The apparatus comprises adjustable supports, up-on which an elongated workpiece to be machined can be placed and rotated. The adjustable support allows to adjust the position of the workpiece with respect to a base plate. The apparatus further comprises a rotating member, adapted to grip one end of the elongated workpiece to be machined and rotate it around its longitudinal axis. Also disclosed are a method for machining rotor and a monolithic shaft-impeller rotor.

The invention relates to a manufacturing device for the electrochemical machining of a component, in particular a turbine component, wherein the manufacturing device comprises at least one machining device, which is set up to remove material of the component in accordance with a predetermined electrochemical machining method. It is provided that the manufacturing device comprises at least one cleaning device, which is set up to spray jets of the electrolyte solution onto the component in accordance with a predetermined jet-spraying method in order to remove a residue layer formed on the component during the predetermined electrochemical machining method.

The invention relates to a manufacturing device for the electrochemical machining of a component, in particular a turbine component, wherein the manufacturing device comprises at least one machining device, which is set up to remove material of the component in accordance with a predetermined electrochemical machining method. It is provided that the manufacturing device comprises at least one cleaning device, which is set up to spray jets of the electrolyte solution onto the component in accordance with a predetermined jet-spraying method in order to remove a residue layer formed on the component during the predetermined electrochemical machining method.

A method of forming a gas turbine engine component including an airfoil and at least one shroud includes the steps of (1) machining a gas path surface of the at least one shroud utilizing a non-electrochemical machining (ECM) process, and (2) then utilizing ECM on at least the airfoil.

A method of forming a gas turbine engine component including an airfoil and at least one shroud includes the steps of (1) machining a gas path surface of the at least one shroud utilizing a non-electrochemical machining (ECM) process, and (2) then utilizing ECM on at least the airfoil.