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Protective box type amorphous, microcrystal or nano-crystal alloy stator core for motor and preparation method thereof

A nanocrystalline alloy and stator iron core technology is applied in high frequency motors, microcrystalline or nanocrystalline alloy stator iron cores and their preparations, and in the field of motor casing type amorphous, which can solve the corresponding problem of soft magnetic properties of amorphous alloy materials. Force sensitivity, amorphous stator core saturation flux density, magnetic permeability and core loss and other performance degradation problems, to achieve the effect of shortening production process, production energy saving, and reducing production cost

Active Publication Date: 2012-02-22
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Dip varnish curing will introduce a lot of bonding stress in the amorphous alloy core, and the soft magnetic properties of the amorphous alloy material are very sensitive to stress, which will inevitably lead to the saturation magnetic flux density and permeability of the amorphous stator core. Performances such as core loss and core loss are significantly lower than those of amorphous alloy materials

Method used

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  • Protective box type amorphous, microcrystal or nano-crystal alloy stator core for motor and preparation method thereof
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  • Protective box type amorphous, microcrystal or nano-crystal alloy stator core for motor and preparation method thereof

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Embodiment Construction

[0069] Since the method for preparing the box-type amorphous, microcrystalline or nanocrystalline alloy stator core for motors using the preparation method of the present invention is the same, only the corresponding materials need to be replaced, and different materials can be selected according to the performance of different materials. process parameters, the alloy stator core of different materials such as amorphous, microcrystalline or nanocrystalline can be prepared. Therefore, the preparation of the amorphous alloy stator core is only taken as an example below, in conjunction with the accompanying drawings and embodiments, for the present invention The specific embodiment will be described in further detail.

[0070] In this embodiment, the nominal composition of the amorphous alloy strip material used to make the amorphous stator alloy iron core for the motor is Fe 80 Si 9 B 11 (at.%), the thickness of the strip is 30±1μm, the width is 140mm, and the surface is flat ...

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Abstract

The invention belongs to the field of magnetic circuit parts of motors, and discloses a protective box type amorphous, microcrystal or nano-crystal alloy stator core for a motor and a preparation method thereof. The method comprises the following steps of: stamping a coiled alloy strip (3) to form a plurality of same annular stamped sheets, wherein the tooth ends of inner teeth (1) of the stampedsheets are positioned on the same circumference and the outer side of each stamped sheet is provided with at least one positioning groove (2); stacking the plurality of annular stamped sheets in a protective box with open upper end, putting the stamped sheets and the protective box into insulated coating solution together and performing insulated dip-coating treatment; taking out the stamped sheets and the protective box together, performing compactness treatment on the annular stamped sheets, fixing an upper end panel of the protective box and the inner center surface together, and forming the stator core; and performing integral annealing treatment on the stator core of the sealed protective box. By the method, the process problems that the stator core is easily damaged to drop residue and cracks among layers, the performance declines because the adhesive stress cannot be eliminated and the like are solved, and the performance of the stator core is greatly improved.

Description

technical field [0001] The invention belongs to the field of magnetic circuit components of motors, and in particular relates to a box-protected amorphous, microcrystalline or nanocrystalline alloy stator core for motors and a preparation method thereof. The stator core is especially suitable for high-frequency motors. Background technique [0002] With the advancement of science and technology, motors driven by 50Hz industrial frequency power supply can no longer meet people's needs in many application fields. In order to achieve high rotational speed, high power density or high torque density of the motor, it is often necessary to design the working frequency of the motor at 400-1000 Hz, or even higher. Today's three-phase synchronous or asynchronous motors equipped with three-phase AC variable frequency (VVVF) speed control systems are replacing traditional DC series excitation traction motors with mechanical commutators, and are used in electric vehicles, rail electric v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/02H02K15/12
Inventor 周少雄张广强王立军李山红
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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