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Method for manufacturing amorphous alloy stator iron core for motor

A technology of amorphous alloy stator core, which is applied in the field of preparation of high-frequency motors and high-performance amorphous alloy stator cores for motors, can solve the problems of performance degradation of amorphous stator cores, shorten the production process, and reduce production Environmental protection and energy saving, avoiding the effect of core damage

Inactive Publication Date: 2012-10-17
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Subsequent stator cutting and motor assembly processes require higher bonding strength between laminations. However, the higher the bonding strength, the greater the stress introduced into the amorphous alloy core, and the amorphous alloy material is very sensitive to stress. This will inevitably lead to a significant decline in the performance of the amorphous stator core in terms of available magnetic flux density, magnetic permeability and core loss compared with the performance of amorphous materials

Method used

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  • Method for manufacturing amorphous alloy stator iron core for motor
  • Method for manufacturing amorphous alloy stator iron core for motor
  • Method for manufacturing amorphous alloy stator iron core for motor

Examples

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preparation example Construction

[0048] According to the preparation method of the present invention, a conventional cutting device such as a transverse shearing machine is first used to transversely cut the coiled amorphous alloy strip to form amorphous alloy sheets 1 with a predetermined thickness and the same shape. There are no particular limitations on the amorphous alloy strip and the method of obtaining the same.

[0049] Then, the obtained amorphous alloy sheets 1 with the same shape are sorted and laminated, and a fixed plate 2 with the same shape as the amorphous alloy sheet is placed on each of the two ends of the laminated body. Use compacting equipment to compact the amorphous alloy laminate. According to the requirements of the required lamination coefficient, the pressure is generally between 1 and 15 MPa. There is no requirement for the holding time, and the lamination coefficient is generally controlled at 0.85 to 0.98. between. In order to prevent the compacted amorphous alloy laminations f...

Embodiment 1

[0055] The nominal composition of the strip for making the amorphous alloy stator core 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 and smooth. First use a cross-cutting machine to cut the amorphous strip into a square amorphous alloy sheet 1 with a length of 140mm, and then stack these square amorphous alloy sheets 1 into a high 100mm amorphous alloy laminate, and in the laminate A non-magnetic stainless steel plate 2 with the same shape as the amorphous alloy sheet 1 and a thickness of 1 mm is placed on the upper and lower sides, and after compaction and clamping (the lamination coefficient is 0.95) according to figure 2 The given drawings are cut by EDM. After cutting, the non-magnetic stainless steel strips 4 are inserted into the 6 small holes 3 of the amorphous laminate and welded and fixed with the non-magnetic stainless steel plates at both ends. Finally, the fixed non-magnetic The crystal alloy iron c...

Embodiment 2

[0065] The nominal composition of the strip for making the amorphous alloy stator core 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 and smooth.

[0066] Firstly, the coiled amorphous alloy strip is treated with insulating coating, and the insulating coating is prepared by dipping and drying. Figure 5 is a schematic diagram of the insulation coating equipment. The insulating coating equipment has two dipping tanks 7 and 12, all made of PVC. The coating solution in the immersion tank 7 and the immersion tank 12 is 5% (wt.%) SiO 2 A mixture of nanopowder, 90% (wt.%) ethanol and 5% (wt.%) deionized water. The coiled amorphous alloy strip 5 first passes through the support shaft 6 and enters the immersion tank 7, removes excess dipping liquid through the scraper 8, and then passes through the heating tube 9 with dry hot air to dry. The drying temperature was 150°C. Then the amorphous strip is introduced into th...

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Abstract

The invention, which belongs to the magnetic circuit component field of the motor, more particularly relates to a method for preparing a high-performance stator iron of an amorphous alloy, wherein the stator iron is used for a motor. The method comprises the following steps: carrying out lateral shearing on an amorphous strip to obtain a plurality of amorphous slices with the same shape; carrying out stacking, compaction and clamping on the amorphous slices, carrying out cutting wholly, and then carrying out mechanical fastening along a stator shaft; and carrying out whole annealing processing on a complete amorphous alloy iron core. According to the method, the mechanical fastening is used to replace adhesion fixing among the amorphous slices to solve problems that interlaminar fracture occurs frequently with utilization of the interlaminar adhesion method and the iron core performance is reduced due to the existence of the adhesion stress, thereby further substantially improving the performance of the stator iron core of the amorphous alloy.

Description

technical field [0001] The invention belongs to the field of magnetic circuit components of motors, and in particular relates to a method for preparing a high-performance amorphous alloy stator core for motors, and the stator core is especially suitable for high-frequency motors. Background technique [0002] At present, more and more application fields put forward higher requirements on the performance of motors, such as aerospace, electric vehicles, robots, high-speed compressors, high-speed flywheel energy storage, turbomolecular pumps, high-speed machine tools, high-speed infrared scanners, high-speed Applications such as centrifugal separators not only require the motor to have high power density or high speed, but also require the motor to have high efficiency at the same time. [0003] We know that to achieve high power density or high speed of the motor, the frequency of the motor must be increased. However, with the increase of the frequency of the motor, the core l...

Claims

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Application Information

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IPC IPC(8): H02K15/02H02K15/10H02K15/12
Inventor 王立军张广强李山红李洁琼黄书林周少雄
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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