Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Lukas Stumm

Franz-Josef Wöstmann

Matthias Busse

Christian Soltmann

Michael Heuser

A method for producing a coil includes casting; a semi-finished product in a cavity of a casting tool and the coil is formed following a demolding of the semi-finished product by shaping this semi-finished product, wherein the form of the semi-finished product may be derived from a shape of the finished coil by stretching along a longitudinal axis of the coil and/or by bending this longitudinal axis, and wherein the semi-finished product, during the shaping, is bent and compressed so that windings of the coil already present in the semi-finished product are brought closer to one another at least in some regions and are brought into an arrangement along the longitudinal axis of the finished coil, wherein the product, whilst being shaped, is twisted or bent by no more than a right angle over the course of each individual turn.

Coil and method and tool for producing coil

A casting core for casting moulds can include a central core and a core shroud arranged around the central core. The core shroud containing contains or consists of ceramic particles bound to a binder. The central core contains ceramic particles bound to a binder, wherein the ceramic particles of the central core contain at least one component, which exhibits, at a temperature in a range from 100&#xb0; C. to 1500&#xb0; C., a thermally induced phase transformation, and/ or at least two components, the thermal expansion coefficients of which at 20&#xb0; C. differ by at least 5&#xb7;10K

Casting core for casting molds and method for the production of same

The present invention relates to a casting core for casting molds, wherein the casting core contains or consists of ceramic particles bound with a silica sol. The casting core has a pore structure, in which the average pore size of the pores increases at least in sections from the outside to the inside in the casting core. The present invention also relates to a method for producing the casting core according to the invention and to the use of the casting core according to the invention.

Casting core for casting molds and method for the production thereof

Disclosed herein are systems and methods for production and use of a casting mold for casting components. The casting mold comprises at least one casting mold frame made of metal and/or of an alloy, and also one or more ceramic casting mold inserts introduced into the at least one casting mold frame. The casting mold insert(s) have the negative contour or part of the negative contour of a component to be produced or of the combination of a component to be produced with one or more casting cores.

Casting mold for casting components and method for the production thereof

Disclosed herein is a casting core for casting molds, the casting core comprising an inner core and an outer core arranged around the inner core. The outer core contains or consists of ceramic particles bound with a binder. The inner core contains ceramic particles bound with a binder and additionally one or more placeholder elements. The placeholder element(s) is/are at least partially thermally decomposable. Also disclosed is a method for producing the casting core and use of the casting core.

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Bremen, Germany

Lukas Stumm