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Material layer for high rotational speeds

A technology of material layer and permanent magnet material, applied in the field of material layer, can solve the problem of not being able to obtain laminations, and achieve the effect of eliminating waste

Active Publication Date: 2021-02-26
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Laminations with both good magnetic properties and high strength cannot be obtained

Method used

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  • Material layer for high rotational speeds
  • Material layer for high rotational speeds
  • Material layer for high rotational speeds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0107] figure 1 A material layer 1 according to the invention is shown.

[0108] The material layer 1 has a material cutout 5 arranged substantially at the middle point of the layer. The material layer 1 has a first region 3 . The first region 3 has a first material with a first strength.

[0109] The first material is, for example, pure iron, in particular pure iron with <0.01% carbon.

[0110] In this figure, the material layer 1 has an annular second region 2 arranged concentrically to the layer midpoint M. The second region 2 has a second material which has a second strength which is higher than the first strength. In the figure, the outer periphery of the second region is adjacent to the inner periphery of the first region.

[0111] The second material is, for example, steel, in particular steel with material number 1.8161.

[0112] The first material and the second material are connected in a material-fit manner.

[0113] In this way, the first region 3 and the se...

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PUM

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Abstract

The invention relates to a material layer (1) for a rotor (22) of a dynamoelectric rotary machine (21) with a rotational direction about a rotational axis (R) arranged in a layer center (M) of the material layer (1), wherein the material layer (1) has a material recess (5) arranged substantially in the layer center (M), and the material layer (1) has a first region (3), said first region (3) having a first material with a first degree of strength. The material layer (1) has a substantially annular second region (2) which is concentric to the layer center, said second region (2) having a secondmaterial with a second degree of strength which is greater than the first degree of strength. The first material and the second material are bonded together. The invention additionally relates to a material layer microstructure (20) and to a method for producing a material layer (1).

Description

technical field [0001] The present invention relates to material layers and methods for producing such material layers. Background technique [0002] Rotating electrical machines use laminations in their lamination packs made of soft magnetic material to enhance the magnetic field generated by permanent magnets and / or electromagnets. Laminations currently used in stacks are formed by stamping or cutting large laminations from rolls. [0003] The disadvantage is that laminations with good magnetic properties have only low strength. This limits the maximum rotational speed of the machine. Manufacturers of rotating electrical machines must therefore always weigh which characteristics are more important for the respective machine. [0004] Laminations having both good magnetic properties and high strength could not be obtained. Contents of the invention [0005] The object of the invention is to improve a rotating electrical machine so that the maximum rotational speed of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/02H02K1/30H02K15/02
CPCH02K1/02H02K1/30H02K15/02H02K1/276H02K15/03H02K29/03
Inventor 罗尔夫·福尔默
Owner SIEMENS AG