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Method for manufacturing magnetic core element with retaining diaphragm

A component and diaphragm technology, applied in the direction of electrical components, magnetic core/yoke, transformer/inductor core, etc., can solve the problems of brittle diaphragm, difficult processing and operation

Active Publication Date: 2018-11-06
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there is a disadvantage: the membrane in the nanocrystalline structure is very brittle and therefore difficult to process and handle without damaging the membrane itself

Method used

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  • Method for manufacturing magnetic core element with retaining diaphragm
  • Method for manufacturing magnetic core element with retaining diaphragm

Examples

Experimental program
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Embodiment Construction

[0029] figure 1 A magnetic core element 1 is shown which has a plurality of diaphragms 10 comprising magnetic material placed one above the other and a protective layer 20 for holding and protecting the diaphragms together. The core element is produced according to the inventive method described in more detail below and is used, for example, in a linear inductive displacement sensor (LIPS) from the applicant company.

[0030] For the production of the core element according to the method according to the invention, it has proven to be advantageous if the protective layer 20 is formed from a non-ferromagnetic metal with a melting point above 500° C. An advantageous material for the protective layer is produced, for example, from molybdenum. As an alternative, the material of the protective layer can be mainly made of ceramics, especially Al 2 o 3 Ceramic or glass.

[0031] figure 2 The fabrication steps of the method are shown schematically in .

[0032] In a first step,...

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Abstract

The invention relates to a method of manufacturing a magnetic core element (1), in particular, the magnetic core element is used in a displacement sensor with a differential transformer comprising a plurality of stacked sheets (10) comprising a magnetic material, and a protective layer for holding together and protecting the films (10), comprising the steps of: a) creating a magnetic film strip (11) by solidification of a melt, b) post-processing of the film strip (11) to a core member (1), characterized in that the post-processing immediately after the solidification of the melt (50) is carried out.

Description

technical field [0001] The invention relates to a method for producing a magnetic core element, a magnetic core element and a sensor having a core element, which are used in particular in displacement sensors with a differential transformer. Background technique [0002] Various applications for detecting measured values ​​are implemented with magnetic sensors. Actual sensors and permanent magnets are used for this. Different magnetic sensor principles are used. For displacement measurement or position detection, the principle consisting of differential transformers has proven itself for many years. Transformers are therefore typically constructed in such a way that an elongated coil, the so-called primary coil, is wound on a soft magnetic core. Outside the coil there is another core of the same type which closes the magnetic circuit. This core is called a loop core. [0003] The primary coil is used to generate an alternating magnetic flux in the soft magnetic core. S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/25H01F27/245H01F27/26H01F41/02
CPCH01F3/04H01F41/0226
Inventor F·格伦瓦尔德
Owner CONTINENTAL AUTOMOTIVE TECH GMBH
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