Method for producing a magnetizable metal shaped body

摘要

A method for producing a magnetizable metal shaped body comprising a ferromagnetic starting material that is present in powder and in particulate form, using the following steps: (a) first compaction of the starting material (S3) such that adjoining particles become bonded to each other by means of positive adhesion and/or integral bonding in sections along the peripheral surfaces thereof and while forming hollow spaces, (b) creating an electrically isolating surface coating on the peripheral surfaces of the particles in regions outside the joining sections (S4), and (c) second compaction of the particles (S5) provided with the surface coating, such that the hollow spaces are reduced in size or eliminated.

主权项

1. A method for producing a magnetizable metallic shaped body composed of a ferromagnetic raw material which is in the form of powder or particles, comprising the steps of:
(a) first compression of a raw material such that adjacent particles are connected to one another by an interlock and/or integral joint in places on their circumferential surface and forming cavities, the first compression is carried out by sintering and/or presintering of a powder, which is compressed by shaking, as the ferromagnetic raw material; (b) production of an electrically insulating surface coating on the circumferential surfaces of the particles in areas outside the connection sections; (c) second compression of the particles which have been provided with the surface coating, such that the cavities are reduced in size or eliminated; and (d) forming the shaped body.