Schaeffler Technologies Ag & Co .Kg

Siemens Aktiengesellschaft

Mtu Aero Engines Gmbh

Paul Heinz

Michael Ott

Richard Baier

Mario Kreutzer

Robert Singer

Dieter Eckert

Thomas Kandler

The disclosure relates to a method for producing a threaded nut of a threaded drive. In a forming process, a sleeve is produced from a steel sheet which is suitable for case-hardening. A flange is integrally formed on the sleeve for welding to a machine part. A welding surface of the flange has a diffusion-inhibiting layer which inhibits the penetration of carbon into the welding surface. The sleeve is case-hardened, and the welding surface is then exposed by removing the diffusion-inhibiting layer. The sleeve can be bonded to a machine part on the exposed welding surface of the sleeve.

Method for producing a threaded nut of a threaded drive, in particular a ball screw nut of a ball screw drive

A profiled nut () of a screw drive includes a sleeve () produced from sheet steel, has a non-cuttingly formed rolling profile () on the inner circumference for rolling contact with rolling bodies and is hardened in a heat treatment method at least in the region of the rolling profile (). An inner lateral surface of the sleeve () having the rolling profile () is hardened and has a higher Rockwell hardness. An outer lateral surface of the sleeve () is designed such that it can be welded and has a lower Rockwell hardness.

Profiled nut of a screw drive, in particular a ball screw nut of a ball screw drive, and method for the production thereof

A method for producing a threaded nut of a threaded drive, includes the following steps: a sleeve is produced from a steel sheet which is suitable for case-hardening; a rolling profile for a rolling contact with rolling bodies is molded on the inner circumference of the sleeve, said rolling profile being wound in a helical manner about the longitudinal axis of the sleeve; a flange is welded to the end face of the sleeve; the flange is provided with a welding surface on the flange end face facing away from the sleeve for welding to a machine part; the welding surface initially has a diffusion-inhibiting layer which inhibits the penetration of carbon; and the welding surface is exposed by removing the diffusion-inhibiting layer after case-hardening the threaded nut. A threaded nut produced according to the method can be part of a ball screw drive, the flange of which can be welded to a provided machine part by the user.

Many known solder alloys according to prior art utilize silicon or boron as melting point reducers, which, however, form brittle phases that have an undesirable effect on the thermo-mechanical properties. The invention relates to a solder ally that comprises gallium and/or germanium, preferably forms the Y' phase and has improved mechanical properties.

Solder alloys for repairing a component

A method for the repair of a component by a solder is disclosed. The method is performed under specifically selected vacuum conditions in order to prevent oxidation and vaporization.

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Forchheim, Germany

Paul Heinz